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1 <?php 2 /** 3 * WordPress Link Template Functions 4 * 5 * @package WordPress 6 * @subpackage Template 7 */ 8 9 /** 10 * Displays the permalink for the current post. 11 * 12 * @since 1.2.0 13 * @since 4.4.0 Added the `$post` parameter. 14 * 15 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 16 */ 17 function the_permalink( $post = 0 ) { 18 /** 19 * Filters the display of the permalink for the current post. 20 * 21 * @since 1.5.0 22 * @since 4.4.0 Added the `$post` parameter. 23 * 24 * @param string $permalink The permalink for the current post. 25 * @param int|WP_Post $post Post ID, WP_Post object, or 0. Default 0. 26 */ 27 echo esc_url( apply_filters( 'the_permalink', get_permalink( $post ), $post ) ); 28 } 29 30 /** 31 * Retrieves a trailing-slashed string if the site is set for adding trailing slashes. 32 * 33 * Conditionally adds a trailing slash if the permalink structure has a trailing 34 * slash, strips the trailing slash if not. The string is passed through the 35 * {@see 'user_trailingslashit'} filter. Will remove trailing slash from string, if 36 * site is not set to have them. 37 * 38 * @since 2.2.0 39 * 40 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 41 * 42 * @param string $string URL with or without a trailing slash. 43 * @param string $type_of_url Optional. The type of URL being considered (e.g. single, category, etc) 44 * for use in the filter. Default empty string. 45 * @return string The URL with the trailing slash appended or stripped. 46 */ 47 function user_trailingslashit( $string, $type_of_url = '' ) { 48 global $wp_rewrite; 49 if ( $wp_rewrite->use_trailing_slashes ) { 50 $string = trailingslashit( $string ); 51 } else { 52 $string = untrailingslashit( $string ); 53 } 54 55 /** 56 * Filters the trailing-slashed string, depending on whether the site is set to use trailing slashes. 57 * 58 * @since 2.2.0 59 * 60 * @param string $string URL with or without a trailing slash. 61 * @param string $type_of_url The type of URL being considered. Accepts 'single', 'single_trackback', 62 * 'single_feed', 'single_paged', 'commentpaged', 'paged', 'home', 'feed', 63 * 'category', 'page', 'year', 'month', 'day', 'post_type_archive'. 64 */ 65 return apply_filters( 'user_trailingslashit', $string, $type_of_url ); 66 } 67 68 /** 69 * Displays the permalink anchor for the current post. 70 * 71 * The permalink mode title will use the post title for the 'a' element 'id' 72 * attribute. The id mode uses 'post-' with the post ID for the 'id' attribute. 73 * 74 * @since 0.71 75 * 76 * @param string $mode Optional. Permalink mode. Accepts 'title' or 'id'. Default 'id'. 77 */ 78 function permalink_anchor( $mode = 'id' ) { 79 $post = get_post(); 80 switch ( strtolower( $mode ) ) { 81 case 'title': 82 $title = sanitize_title( $post->post_title ) . '-' . $post->ID; 83 echo '<a id="' . $title . '"></a>'; 84 break; 85 case 'id': 86 default: 87 echo '<a id="post-' . $post->ID . '"></a>'; 88 break; 89 } 90 } 91 92 /** 93 * Retrieves the full permalink for the current post or post ID. 94 * 95 * This function is an alias for get_permalink(). 96 * 97 * @since 3.9.0 98 * 99 * @see get_permalink() 100 * 101 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 102 * @param bool $leavename Optional. Whether to keep post name or page name. Default false. 103 * 104 * @return string|false The permalink URL or false if post does not exist. 105 */ 106 function get_the_permalink( $post = 0, $leavename = false ) { 107 return get_permalink( $post, $leavename ); 108 } 109 110 /** 111 * Retrieves the full permalink for the current post or post ID. 112 * 113 * @since 1.0.0 114 * 115 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 116 * @param bool $leavename Optional. Whether to keep post name or page name. Default false. 117 * @return string|false The permalink URL or false if post does not exist. 118 */ 119 function get_permalink( $post = 0, $leavename = false ) { 120 $rewritecode = array( 121 '%year%', 122 '%monthnum%', 123 '%day%', 124 '%hour%', 125 '%minute%', 126 '%second%', 127 $leavename ? '' : '%postname%', 128 '%post_id%', 129 '%category%', 130 '%author%', 131 $leavename ? '' : '%pagename%', 132 ); 133 134 if ( is_object( $post ) && isset( $post->filter ) && 'sample' == $post->filter ) { 135 $sample = true; 136 } else { 137 $post = get_post( $post ); 138 $sample = false; 139 } 140 141 if ( empty( $post->ID ) ) { 142 return false; 143 } 144 145 if ( $post->post_type == 'page' ) { 146 return get_page_link( $post, $leavename, $sample ); 147 } elseif ( $post->post_type == 'attachment' ) { 148 return get_attachment_link( $post, $leavename ); 149 } elseif ( in_array( $post->post_type, get_post_types( array( '_builtin' => false ) ) ) ) { 150 return get_post_permalink( $post, $leavename, $sample ); 151 } 152 153 $permalink = get_option( 'permalink_structure' ); 154 155 /** 156 * Filters the permalink structure for a post before token replacement occurs. 157 * 158 * Only applies to posts with post_type of 'post'. 159 * 160 * @since 3.0.0 161 * 162 * @param string $permalink The site's permalink structure. 163 * @param WP_Post $post The post in question. 164 * @param bool $leavename Whether to keep the post name. 165 */ 166 $permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename ); 167 168 if ( '' != $permalink && ! in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) { 169 $unixtime = strtotime( $post->post_date ); 170 171 $category = ''; 172 if ( strpos( $permalink, '%category%' ) !== false ) { 173 $cats = get_the_category( $post->ID ); 174 if ( $cats ) { 175 $cats = wp_list_sort( 176 $cats, 177 array( 178 'term_id' => 'ASC', 179 ) 180 ); 181 182 /** 183 * Filters the category that gets used in the %category% permalink token. 184 * 185 * @since 3.5.0 186 * 187 * @param WP_Term $cat The category to use in the permalink. 188 * @param array $cats Array of all categories (WP_Term objects) associated with the post. 189 * @param WP_Post $post The post in question. 190 */ 191 $category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post ); 192 193 $category_object = get_term( $category_object, 'category' ); 194 $category = $category_object->slug; 195 if ( $category_object->parent ) { 196 $category = get_category_parents( $category_object->parent, false, '/', true ) . $category; 197 } 198 } 199 // show default category in permalinks, without 200 // having to assign it explicitly 201 if ( empty( $category ) ) { 202 $default_category = get_term( get_option( 'default_category' ), 'category' ); 203 if ( $default_category && ! is_wp_error( $default_category ) ) { 204 $category = $default_category->slug; 205 } 206 } 207 } 208 209 $author = ''; 210 if ( strpos( $permalink, '%author%' ) !== false ) { 211 $authordata = get_userdata( $post->post_author ); 212 $author = $authordata->user_nicename; 213 } 214 215 $date = explode( ' ', gmdate( 'Y m d H i s', $unixtime ) ); 216 $rewritereplace = 217 array( 218 $date[0], 219 $date[1], 220 $date[2], 221 $date[3], 222 $date[4], 223 $date[5], 224 $post->post_name, 225 $post->ID, 226 $category, 227 $author, 228 $post->post_name, 229 ); 230 $permalink = home_url( str_replace( $rewritecode, $rewritereplace, $permalink ) ); 231 $permalink = user_trailingslashit( $permalink, 'single' ); 232 } else { // if they're not using the fancy permalink option 233 $permalink = home_url( '?p=' . $post->ID ); 234 } 235 236 /** 237 * Filters the permalink for a post. 238 * 239 * Only applies to posts with post_type of 'post'. 240 * 241 * @since 1.5.0 242 * 243 * @param string $permalink The post's permalink. 244 * @param WP_Post $post The post in question. 245 * @param bool $leavename Whether to keep the post name. 246 */ 247 return apply_filters( 'post_link', $permalink, $post, $leavename ); 248 } 249 250 /** 251 * Retrieves the permalink for a post of a custom post type. 252 * 253 * @since 3.0.0 254 * 255 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 256 * 257 * @param int|WP_Post $id Optional. Post ID or post object. Default is the global `$post`. 258 * @param bool $leavename Optional, defaults to false. Whether to keep post name. Default false. 259 * @param bool $sample Optional, defaults to false. Is it a sample permalink. Default false. 260 * @return string|WP_Error The post permalink. 261 */ 262 function get_post_permalink( $id = 0, $leavename = false, $sample = false ) { 263 global $wp_rewrite; 264 265 $post = get_post( $id ); 266 267 if ( is_wp_error( $post ) ) { 268 return $post; 269 } 270 271 $post_link = $wp_rewrite->get_extra_permastruct( $post->post_type ); 272 273 $slug = $post->post_name; 274 275 $draft_or_pending = get_post_status( $post ) && in_array( get_post_status( $post ), array( 'draft', 'pending', 'auto-draft', 'future' ) ); 276 277 $post_type = get_post_type_object( $post->post_type ); 278 279 if ( $post_type->hierarchical ) { 280 $slug = get_page_uri( $post ); 281 } 282 283 if ( ! empty( $post_link ) && ( ! $draft_or_pending || $sample ) ) { 284 if ( ! $leavename ) { 285 $post_link = str_replace( "%$post->post_type%", $slug, $post_link ); 286 } 287 $post_link = home_url( user_trailingslashit( $post_link ) ); 288 } else { 289 if ( $post_type->query_var && ( isset( $post->post_status ) && ! $draft_or_pending ) ) { 290 $post_link = add_query_arg( $post_type->query_var, $slug, '' ); 291 } else { 292 $post_link = add_query_arg( 293 array( 294 'post_type' => $post->post_type, 295 'p' => $post->ID, 296 ), 297 '' 298 ); 299 } 300 $post_link = home_url( $post_link ); 301 } 302 303 /** 304 * Filters the permalink for a post of a custom post type. 305 * 306 * @since 3.0.0 307 * 308 * @param string $post_link The post's permalink. 309 * @param WP_Post $post The post in question. 310 * @param bool $leavename Whether to keep the post name. 311 * @param bool $sample Is it a sample permalink. 312 */ 313 return apply_filters( 'post_type_link', $post_link, $post, $leavename, $sample ); 314 } 315 316 /** 317 * Retrieves the permalink for the current page or page ID. 318 * 319 * Respects page_on_front. Use this one. 320 * 321 * @since 1.5.0 322 * 323 * @param int|WP_Post $post Optional. Post ID or object. Default uses the global `$post`. 324 * @param bool $leavename Optional. Whether to keep the page name. Default false. 325 * @param bool $sample Optional. Whether it should be treated as a sample permalink. 326 * Default false. 327 * @return string The page permalink. 328 */ 329 function get_page_link( $post = false, $leavename = false, $sample = false ) { 330 $post = get_post( $post ); 331 332 if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) ) { 333 $link = home_url( '/' ); 334 } else { 335 $link = _get_page_link( $post, $leavename, $sample ); 336 } 337 338 /** 339 * Filters the permalink for a page. 340 * 341 * @since 1.5.0 342 * 343 * @param string $link The page's permalink. 344 * @param int $post_id The ID of the page. 345 * @param bool $sample Is it a sample permalink. 346 */ 347 return apply_filters( 'page_link', $link, $post->ID, $sample ); 348 } 349 350 /** 351 * Retrieves the page permalink. 352 * 353 * Ignores page_on_front. Internal use only. 354 * 355 * @since 2.1.0 356 * @access private 357 * 358 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 359 * 360 * @param int|WP_Post $post Optional. Post ID or object. Default uses the global `$post`. 361 * @param bool $leavename Optional. Whether to keep the page name. Default false. 362 * @param bool $sample Optional. Whether it should be treated as a sample permalink. 363 * Default false. 364 * @return string The page permalink. 365 */ 366 function _get_page_link( $post = false, $leavename = false, $sample = false ) { 367 global $wp_rewrite; 368 369 $post = get_post( $post ); 370 371 $draft_or_pending = in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) ); 372 373 $link = $wp_rewrite->get_page_permastruct(); 374 375 if ( ! empty( $link ) && ( ( isset( $post->post_status ) && ! $draft_or_pending ) || $sample ) ) { 376 if ( ! $leavename ) { 377 $link = str_replace( '%pagename%', get_page_uri( $post ), $link ); 378 } 379 380 $link = home_url( $link ); 381 $link = user_trailingslashit( $link, 'page' ); 382 } else { 383 $link = home_url( '?page_id=' . $post->ID ); 384 } 385 386 /** 387 * Filters the permalink for a non-page_on_front page. 388 * 389 * @since 2.1.0 390 * 391 * @param string $link The page's permalink. 392 * @param int $post_id The ID of the page. 393 */ 394 return apply_filters( '_get_page_link', $link, $post->ID ); 395 } 396 397 /** 398 * Retrieves the permalink for an attachment. 399 * 400 * This can be used in the WordPress Loop or outside of it. 401 * 402 * @since 2.0.0 403 * 404 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 405 * 406 * @param int|object $post Optional. Post ID or object. Default uses the global `$post`. 407 * @param bool $leavename Optional. Whether to keep the page name. Default false. 408 * @return string The attachment permalink. 409 */ 410 function get_attachment_link( $post = null, $leavename = false ) { 411 global $wp_rewrite; 412 413 $link = false; 414 415 $post = get_post( $post ); 416 $parent = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false; 417 if ( $parent && ! in_array( $parent->post_type, get_post_types() ) ) { 418 $parent = false; 419 } 420 421 if ( $wp_rewrite->using_permalinks() && $parent ) { 422 if ( 'page' == $parent->post_type ) { 423 $parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front 424 } else { 425 $parentlink = get_permalink( $post->post_parent ); 426 } 427 428 if ( is_numeric( $post->post_name ) || false !== strpos( get_option( 'permalink_structure' ), '%category%' ) ) { 429 $name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker 430 } else { 431 $name = $post->post_name; 432 } 433 434 if ( strpos( $parentlink, '?' ) === false ) { 435 $link = user_trailingslashit( trailingslashit( $parentlink ) . '%postname%' ); 436 } 437 438 if ( ! $leavename ) { 439 $link = str_replace( '%postname%', $name, $link ); 440 } 441 } elseif ( $wp_rewrite->using_permalinks() && ! $leavename ) { 442 $link = home_url( user_trailingslashit( $post->post_name ) ); 443 } 444 445 if ( ! $link ) { 446 $link = home_url( '/?attachment_id=' . $post->ID ); 447 } 448 449 /** 450 * Filters the permalink for an attachment. 451 * 452 * @since 2.0.0 453 * 454 * @param string $link The attachment's permalink. 455 * @param int $post_id Attachment ID. 456 */ 457 return apply_filters( 'attachment_link', $link, $post->ID ); 458 } 459 460 /** 461 * Retrieves the permalink for the year archives. 462 * 463 * @since 1.5.0 464 * 465 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 466 * 467 * @param int|bool $year False for current year or year for permalink. 468 * @return string The permalink for the specified year archive. 469 */ 470 function get_year_link( $year ) { 471 global $wp_rewrite; 472 if ( ! $year ) { 473 $year = current_time( 'Y' ); 474 } 475 $yearlink = $wp_rewrite->get_year_permastruct(); 476 if ( ! empty( $yearlink ) ) { 477 $yearlink = str_replace( '%year%', $year, $yearlink ); 478 $yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) ); 479 } else { 480 $yearlink = home_url( '?m=' . $year ); 481 } 482 483 /** 484 * Filters the year archive permalink. 485 * 486 * @since 1.5.0 487 * 488 * @param string $yearlink Permalink for the year archive. 489 * @param int $year Year for the archive. 490 */ 491 return apply_filters( 'year_link', $yearlink, $year ); 492 } 493 494 /** 495 * Retrieves the permalink for the month archives with year. 496 * 497 * @since 1.0.0 498 * 499 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 500 * 501 * @param bool|int $year False for current year. Integer of year. 502 * @param bool|int $month False for current month. Integer of month. 503 * @return string The permalink for the specified month and year archive. 504 */ 505 function get_month_link( $year, $month ) { 506 global $wp_rewrite; 507 if ( ! $year ) { 508 $year = current_time( 'Y' ); 509 } 510 if ( ! $month ) { 511 $month = current_time( 'm' ); 512 } 513 $monthlink = $wp_rewrite->get_month_permastruct(); 514 if ( ! empty( $monthlink ) ) { 515 $monthlink = str_replace( '%year%', $year, $monthlink ); 516 $monthlink = str_replace( '%monthnum%', zeroise( intval( $month ), 2 ), $monthlink ); 517 $monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) ); 518 } else { 519 $monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) ); 520 } 521 522 /** 523 * Filters the month archive permalink. 524 * 525 * @since 1.5.0 526 * 527 * @param string $monthlink Permalink for the month archive. 528 * @param int $year Year for the archive. 529 * @param int $month The month for the archive. 530 */ 531 return apply_filters( 'month_link', $monthlink, $year, $month ); 532 } 533 534 /** 535 * Retrieves the permalink for the day archives with year and month. 536 * 537 * @since 1.0.0 538 * 539 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 540 * 541 * @param bool|int $year False for current year. Integer of year. 542 * @param bool|int $month False for current month. Integer of month. 543 * @param bool|int $day False for current day. Integer of day. 544 * @return string The permalink for the specified day, month, and year archive. 545 */ 546 function get_day_link( $year, $month, $day ) { 547 global $wp_rewrite; 548 if ( ! $year ) { 549 $year = current_time( 'Y' ); 550 } 551 if ( ! $month ) { 552 $month = current_time( 'm' ); 553 } 554 if ( ! $day ) { 555 $day = current_time( 'j' ); 556 } 557 558 $daylink = $wp_rewrite->get_day_permastruct(); 559 if ( ! empty( $daylink ) ) { 560 $daylink = str_replace( '%year%', $year, $daylink ); 561 $daylink = str_replace( '%monthnum%', zeroise( intval( $month ), 2 ), $daylink ); 562 $daylink = str_replace( '%day%', zeroise( intval( $day ), 2 ), $daylink ); 563 $daylink = home_url( user_trailingslashit( $daylink, 'day' ) ); 564 } else { 565 $daylink = home_url( '?m=' . $year . zeroise( $month, 2 ) . zeroise( $day, 2 ) ); 566 } 567 568 /** 569 * Filters the day archive permalink. 570 * 571 * @since 1.5.0 572 * 573 * @param string $daylink Permalink for the day archive. 574 * @param int $year Year for the archive. 575 * @param int $month Month for the archive. 576 * @param int $day The day for the archive. 577 */ 578 return apply_filters( 'day_link', $daylink, $year, $month, $day ); 579 } 580 581 /** 582 * Displays the permalink for the feed type. 583 * 584 * @since 3.0.0 585 * 586 * @param string $anchor The link's anchor text. 587 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 588 * Default is the value of get_default_feed(). 589 */ 590 function the_feed_link( $anchor, $feed = '' ) { 591 $link = '<a href="' . esc_url( get_feed_link( $feed ) ) . '">' . $anchor . '</a>'; 592 593 /** 594 * Filters the feed link anchor tag. 595 * 596 * @since 3.0.0 597 * 598 * @param string $link The complete anchor tag for a feed link. 599 * @param string $feed The feed type. Possible values include 'rss2', 'atom', 600 * or an empty string for the default feed type. 601 */ 602 echo apply_filters( 'the_feed_link', $link, $feed ); 603 } 604 605 /** 606 * Retrieves the permalink for the feed type. 607 * 608 * @since 1.5.0 609 * 610 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 611 * 612 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 613 * Default is the value of get_default_feed(). 614 * @return string The feed permalink. 615 */ 616 function get_feed_link( $feed = '' ) { 617 global $wp_rewrite; 618 619 $permalink = $wp_rewrite->get_feed_permastruct(); 620 if ( '' != $permalink ) { 621 if ( false !== strpos( $feed, 'comments_' ) ) { 622 $feed = str_replace( 'comments_', '', $feed ); 623 $permalink = $wp_rewrite->get_comment_feed_permastruct(); 624 } 625 626 if ( get_default_feed() == $feed ) { 627 $feed = ''; 628 } 629 630 $permalink = str_replace( '%feed%', $feed, $permalink ); 631 $permalink = preg_replace( '#/+#', '/', "/$permalink" ); 632 $output = home_url( user_trailingslashit( $permalink, 'feed' ) ); 633 } else { 634 if ( empty( $feed ) ) { 635 $feed = get_default_feed(); 636 } 637 638 if ( false !== strpos( $feed, 'comments_' ) ) { 639 $feed = str_replace( 'comments_', 'comments-', $feed ); 640 } 641 642 $output = home_url( "?feed={$feed}" ); 643 } 644 645 /** 646 * Filters the feed type permalink. 647 * 648 * @since 1.5.0 649 * 650 * @param string $output The feed permalink. 651 * @param string $feed The feed type. Possible values include 'rss2', 'atom', 652 * or an empty string for the default feed type. 653 */ 654 return apply_filters( 'feed_link', $output, $feed ); 655 } 656 657 /** 658 * Retrieves the permalink for the post comments feed. 659 * 660 * @since 2.2.0 661 * 662 * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`. 663 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 664 * Default is the value of get_default_feed(). 665 * @return string The permalink for the comments feed for the given post. 666 */ 667 function get_post_comments_feed_link( $post_id = 0, $feed = '' ) { 668 $post_id = absint( $post_id ); 669 670 if ( ! $post_id ) { 671 $post_id = get_the_ID(); 672 } 673 674 if ( empty( $feed ) ) { 675 $feed = get_default_feed(); 676 } 677 678 $post = get_post( $post_id ); 679 $unattached = 'attachment' === $post->post_type && 0 === (int) $post->post_parent; 680 681 if ( '' != get_option( 'permalink_structure' ) ) { 682 if ( 'page' == get_option( 'show_on_front' ) && $post_id == get_option( 'page_on_front' ) ) { 683 $url = _get_page_link( $post_id ); 684 } else { 685 $url = get_permalink( $post_id ); 686 } 687 688 if ( $unattached ) { 689 $url = home_url( '/feed/' ); 690 if ( $feed !== get_default_feed() ) { 691 $url .= "$feed/"; 692 } 693 $url = add_query_arg( 'attachment_id', $post_id, $url ); 694 } else { 695 $url = trailingslashit( $url ) . 'feed'; 696 if ( $feed != get_default_feed() ) { 697 $url .= "/$feed"; 698 } 699 $url = user_trailingslashit( $url, 'single_feed' ); 700 } 701 } else { 702 if ( $unattached ) { 703 $url = add_query_arg( 704 array( 705 'feed' => $feed, 706 'attachment_id' => $post_id, 707 ), 708 home_url( '/' ) 709 ); 710 } elseif ( 'page' == $post->post_type ) { 711 $url = add_query_arg( 712 array( 713 'feed' => $feed, 714 'page_id' => $post_id, 715 ), 716 home_url( '/' ) 717 ); 718 } else { 719 $url = add_query_arg( 720 array( 721 'feed' => $feed, 722 'p' => $post_id, 723 ), 724 home_url( '/' ) 725 ); 726 } 727 } 728 729 /** 730 * Filters the post comments feed permalink. 731 * 732 * @since 1.5.1 733 * 734 * @param string $url Post comments feed permalink. 735 */ 736 return apply_filters( 'post_comments_feed_link', $url ); 737 } 738 739 /** 740 * Displays the comment feed link for a post. 741 * 742 * Prints out the comment feed link for a post. Link text is placed in the 743 * anchor. If no link text is specified, default text is used. If no post ID is 744 * specified, the current post is used. 745 * 746 * @since 2.5.0 747 * 748 * @param string $link_text Optional. Descriptive link text. Default 'Comments Feed'. 749 * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`. 750 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 751 * Default is the value of get_default_feed(). 752 */ 753 function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) { 754 $url = get_post_comments_feed_link( $post_id, $feed ); 755 if ( empty( $link_text ) ) { 756 $link_text = __( 'Comments Feed' ); 757 } 758 759 $link = '<a href="' . esc_url( $url ) . '">' . $link_text . '</a>'; 760 /** 761 * Filters the post comment feed link anchor tag. 762 * 763 * @since 2.8.0 764 * 765 * @param string $link The complete anchor tag for the comment feed link. 766 * @param int $post_id Post ID. 767 * @param string $feed The feed type. Possible values include 'rss2', 'atom', 768 * or an empty string for the default feed type. 769 */ 770 echo apply_filters( 'post_comments_feed_link_html', $link, $post_id, $feed ); 771 } 772 773 /** 774 * Retrieves the feed link for a given author. 775 * 776 * Returns a link to the feed for all posts by a given author. A specific feed 777 * can be requested or left blank to get the default feed. 778 * 779 * @since 2.5.0 780 * 781 * @param int $author_id Author ID. 782 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 783 * Default is the value of get_default_feed(). 784 * @return string Link to the feed for the author specified by $author_id. 785 */ 786 function get_author_feed_link( $author_id, $feed = '' ) { 787 $author_id = (int) $author_id; 788 $permalink_structure = get_option( 'permalink_structure' ); 789 790 if ( empty( $feed ) ) { 791 $feed = get_default_feed(); 792 } 793 794 if ( '' == $permalink_structure ) { 795 $link = home_url( "?feed=$feed&author=" . $author_id ); 796 } else { 797 $link = get_author_posts_url( $author_id ); 798 if ( $feed == get_default_feed() ) { 799 $feed_link = 'feed'; 800 } else { 801 $feed_link = "feed/$feed"; 802 } 803 804 $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' ); 805 } 806 807 /** 808 * Filters the feed link for a given author. 809 * 810 * @since 1.5.1 811 * 812 * @param string $link The author feed link. 813 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 814 */ 815 $link = apply_filters( 'author_feed_link', $link, $feed ); 816 817 return $link; 818 } 819 820 /** 821 * Retrieves the feed link for a category. 822 * 823 * Returns a link to the feed for all posts in a given category. A specific feed 824 * can be requested or left blank to get the default feed. 825 * 826 * @since 2.5.0 827 * 828 * @param int $cat_id Category ID. 829 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 830 * Default is the value of get_default_feed(). 831 * @return string Link to the feed for the category specified by $cat_id. 832 */ 833 function get_category_feed_link( $cat_id, $feed = '' ) { 834 return get_term_feed_link( $cat_id, 'category', $feed ); 835 } 836 837 /** 838 * Retrieves the feed link for a term. 839 * 840 * Returns a link to the feed for all posts in a given term. A specific feed 841 * can be requested or left blank to get the default feed. 842 * 843 * @since 3.0.0 844 * 845 * @param int $term_id Term ID. 846 * @param string $taxonomy Optional. Taxonomy of `$term_id`. Default 'category'. 847 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 848 * Default is the value of get_default_feed(). 849 * @return string|false Link to the feed for the term specified by $term_id and $taxonomy. 850 */ 851 function get_term_feed_link( $term_id, $taxonomy = 'category', $feed = '' ) { 852 $term_id = (int) $term_id; 853 854 $term = get_term( $term_id, $taxonomy ); 855 856 if ( empty( $term ) || is_wp_error( $term ) ) { 857 return false; 858 } 859 860 if ( empty( $feed ) ) { 861 $feed = get_default_feed(); 862 } 863 864 $permalink_structure = get_option( 'permalink_structure' ); 865 866 if ( '' == $permalink_structure ) { 867 if ( 'category' == $taxonomy ) { 868 $link = home_url( "?feed=$feed&cat=$term_id" ); 869 } elseif ( 'post_tag' == $taxonomy ) { 870 $link = home_url( "?feed=$feed&tag=$term->slug" ); 871 } else { 872 $t = get_taxonomy( $taxonomy ); 873 $link = home_url( "?feed=$feed&$t->query_var=$term->slug" ); 874 } 875 } else { 876 $link = get_term_link( $term_id, $term->taxonomy ); 877 if ( $feed == get_default_feed() ) { 878 $feed_link = 'feed'; 879 } else { 880 $feed_link = "feed/$feed"; 881 } 882 883 $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' ); 884 } 885 886 if ( 'category' == $taxonomy ) { 887 /** 888 * Filters the category feed link. 889 * 890 * @since 1.5.1 891 * 892 * @param string $link The category feed link. 893 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 894 */ 895 $link = apply_filters( 'category_feed_link', $link, $feed ); 896 } elseif ( 'post_tag' == $taxonomy ) { 897 /** 898 * Filters the post tag feed link. 899 * 900 * @since 2.3.0 901 * 902 * @param string $link The tag feed link. 903 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 904 */ 905 $link = apply_filters( 'tag_feed_link', $link, $feed ); 906 } else { 907 /** 908 * Filters the feed link for a taxonomy other than 'category' or 'post_tag'. 909 * 910 * @since 3.0.0 911 * 912 * @param string $link The taxonomy feed link. 913 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 914 * @param string $taxonomy The taxonomy name. 915 */ 916 $link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy ); 917 } 918 919 return $link; 920 } 921 922 /** 923 * Retrieves the permalink for a tag feed. 924 * 925 * @since 2.3.0 926 * 927 * @param int $tag_id Tag ID. 928 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 929 * Default is the value of get_default_feed(). 930 * @return string The feed permalink for the given tag. 931 */ 932 function get_tag_feed_link( $tag_id, $feed = '' ) { 933 return get_term_feed_link( $tag_id, 'post_tag', $feed ); 934 } 935 936 /** 937 * Retrieves the edit link for a tag. 938 * 939 * @since 2.7.0 940 * 941 * @param int $tag_id Tag ID. 942 * @param string $taxonomy Optional. Taxonomy slug. Default 'post_tag'. 943 * @return string The edit tag link URL for the given tag. 944 */ 945 function get_edit_tag_link( $tag_id, $taxonomy = 'post_tag' ) { 946 /** 947 * Filters the edit link for a tag (or term in another taxonomy). 948 * 949 * @since 2.7.0 950 * 951 * @param string $link The term edit link. 952 */ 953 return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag_id, $taxonomy ) ); 954 } 955 956 /** 957 * Displays or retrieves the edit link for a tag with formatting. 958 * 959 * @since 2.7.0 960 * 961 * @param string $link Optional. Anchor text. Default empty. 962 * @param string $before Optional. Display before edit link. Default empty. 963 * @param string $after Optional. Display after edit link. Default empty. 964 * @param WP_Term $tag Optional. Term object. If null, the queried object will be inspected. 965 * Default null. 966 */ 967 function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) { 968 $link = edit_term_link( $link, '', '', $tag, false ); 969 970 /** 971 * Filters the anchor tag for the edit link for a tag (or term in another taxonomy). 972 * 973 * @since 2.7.0 974 * 975 * @param string $link The anchor tag for the edit link. 976 */ 977 echo $before . apply_filters( 'edit_tag_link', $link ) . $after; 978 } 979 980 /** 981 * Retrieves the URL for editing a given term. 982 * 983 * @since 3.1.0 984 * @since 4.5.0 The `$taxonomy` argument was made optional. 985 * 986 * @param int $term_id Term ID. 987 * @param string $taxonomy Optional. Taxonomy. Defaults to the taxonomy of the term identified 988 * by `$term_id`. 989 * @param string $object_type Optional. The object type. Used to highlight the proper post type 990 * menu on the linked page. Defaults to the first object_type associated 991 * with the taxonomy. 992 * @return string|null The edit term link URL for the given term, or null on failure. 993 */ 994 function get_edit_term_link( $term_id, $taxonomy = '', $object_type = '' ) { 995 $term = get_term( $term_id, $taxonomy ); 996 if ( ! $term || is_wp_error( $term ) ) { 997 return; 998 } 999 1000 $tax = get_taxonomy( $term->taxonomy ); 1001 if ( ! $tax || ! current_user_can( 'edit_term', $term->term_id ) ) { 1002 return; 1003 } 1004 1005 $args = array( 1006 'taxonomy' => $taxonomy, 1007 'tag_ID' => $term->term_id, 1008 ); 1009 1010 if ( $object_type ) { 1011 $args['post_type'] = $object_type; 1012 } elseif ( ! empty( $tax->object_type ) ) { 1013 $args['post_type'] = reset( $tax->object_type ); 1014 } 1015 1016 if ( $tax->show_ui ) { 1017 $location = add_query_arg( $args, admin_url( 'term.php' ) ); 1018 } else { 1019 $location = ''; 1020 } 1021 1022 /** 1023 * Filters the edit link for a term. 1024 * 1025 * @since 3.1.0 1026 * 1027 * @param string $location The edit link. 1028 * @param int $term_id Term ID. 1029 * @param string $taxonomy Taxonomy name. 1030 * @param string $object_type The object type (eg. the post type). 1031 */ 1032 return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type ); 1033 } 1034 1035 /** 1036 * Displays or retrieves the edit term link with formatting. 1037 * 1038 * @since 3.1.0 1039 * 1040 * @param string $link Optional. Anchor text. Default empty. 1041 * @param string $before Optional. Display before edit link. Default empty. 1042 * @param string $after Optional. Display after edit link. Default empty. 1043 * @param object $term Optional. Term object. If null, the queried object will be inspected. Default null. 1044 * @param bool $echo Optional. Whether or not to echo the return. Default true. 1045 * @return string|void HTML content. 1046 */ 1047 function edit_term_link( $link = '', $before = '', $after = '', $term = null, $echo = true ) { 1048 if ( is_null( $term ) ) { 1049 $term = get_queried_object(); 1050 } 1051 1052 if ( ! $term ) { 1053 return; 1054 } 1055 1056 $tax = get_taxonomy( $term->taxonomy ); 1057 if ( ! current_user_can( 'edit_term', $term->term_id ) ) { 1058 return; 1059 } 1060 1061 if ( empty( $link ) ) { 1062 $link = __( 'Edit This' ); 1063 } 1064 1065 $link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '">' . $link . '</a>'; 1066 1067 /** 1068 * Filters the anchor tag for the edit link of a term. 1069 * 1070 * @since 3.1.0 1071 * 1072 * @param string $link The anchor tag for the edit link. 1073 * @param int $term_id Term ID. 1074 */ 1075 $link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after; 1076 1077 if ( $echo ) { 1078 echo $link; 1079 } else { 1080 return $link; 1081 } 1082 } 1083 1084 /** 1085 * Retrieves the permalink for a search. 1086 * 1087 * @since 3.0.0 1088 * 1089 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1090 * 1091 * @param string $query Optional. The query string to use. If empty the current query is used. Default empty. 1092 * @return string The search permalink. 1093 */ 1094 function get_search_link( $query = '' ) { 1095 global $wp_rewrite; 1096 1097 if ( empty( $query ) ) { 1098 $search = get_search_query( false ); 1099 } else { 1100 $search = stripslashes( $query ); 1101 } 1102 1103 $permastruct = $wp_rewrite->get_search_permastruct(); 1104 1105 if ( empty( $permastruct ) ) { 1106 $link = home_url( '?s=' . urlencode( $search ) ); 1107 } else { 1108 $search = urlencode( $search ); 1109 $search = str_replace( '%2F', '/', $search ); // %2F(/) is not valid within a URL, send it un-encoded. 1110 $link = str_replace( '%search%', $search, $permastruct ); 1111 $link = home_url( user_trailingslashit( $link, 'search' ) ); 1112 } 1113 1114 /** 1115 * Filters the search permalink. 1116 * 1117 * @since 3.0.0 1118 * 1119 * @param string $link Search permalink. 1120 * @param string $search The URL-encoded search term. 1121 */ 1122 return apply_filters( 'search_link', $link, $search ); 1123 } 1124 1125 /** 1126 * Retrieves the permalink for the search results feed. 1127 * 1128 * @since 2.5.0 1129 * 1130 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1131 * 1132 * @param string $search_query Optional. Search query. Default empty. 1133 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1134 * Default is the value of get_default_feed(). 1135 * @return string The search results feed permalink. 1136 */ 1137 function get_search_feed_link( $search_query = '', $feed = '' ) { 1138 global $wp_rewrite; 1139 $link = get_search_link( $search_query ); 1140 1141 if ( empty( $feed ) ) { 1142 $feed = get_default_feed(); 1143 } 1144 1145 $permastruct = $wp_rewrite->get_search_permastruct(); 1146 1147 if ( empty( $permastruct ) ) { 1148 $link = add_query_arg( 'feed', $feed, $link ); 1149 } else { 1150 $link = trailingslashit( $link ); 1151 $link .= "feed/$feed/"; 1152 } 1153 1154 /** 1155 * Filters the search feed link. 1156 * 1157 * @since 2.5.0 1158 * 1159 * @param string $link Search feed link. 1160 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 1161 * @param string $type The search type. One of 'posts' or 'comments'. 1162 */ 1163 return apply_filters( 'search_feed_link', $link, $feed, 'posts' ); 1164 } 1165 1166 /** 1167 * Retrieves the permalink for the search results comments feed. 1168 * 1169 * @since 2.5.0 1170 * 1171 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1172 * 1173 * @param string $search_query Optional. Search query. Default empty. 1174 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1175 * Default is the value of get_default_feed(). 1176 * @return string The comments feed search results permalink. 1177 */ 1178 function get_search_comments_feed_link( $search_query = '', $feed = '' ) { 1179 global $wp_rewrite; 1180 1181 if ( empty( $feed ) ) { 1182 $feed = get_default_feed(); 1183 } 1184 1185 $link = get_search_feed_link( $search_query, $feed ); 1186 1187 $permastruct = $wp_rewrite->get_search_permastruct(); 1188 1189 if ( empty( $permastruct ) ) { 1190 $link = add_query_arg( 'feed', 'comments-' . $feed, $link ); 1191 } else { 1192 $link = add_query_arg( 'withcomments', 1, $link ); 1193 } 1194 1195 /** This filter is documented in wp-includes/link-template.php */ 1196 return apply_filters( 'search_feed_link', $link, $feed, 'comments' ); 1197 } 1198 1199 /** 1200 * Retrieves the permalink for a post type archive. 1201 * 1202 * @since 3.1.0 1203 * @since 4.5.0 Support for posts was added. 1204 * 1205 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1206 * 1207 * @param string $post_type Post type. 1208 * @return string|false The post type archive permalink. 1209 */ 1210 function get_post_type_archive_link( $post_type ) { 1211 global $wp_rewrite; 1212 1213 $post_type_obj = get_post_type_object( $post_type ); 1214 if ( ! $post_type_obj ) { 1215 return false; 1216 } 1217 1218 if ( 'post' === $post_type ) { 1219 $show_on_front = get_option( 'show_on_front' ); 1220 $page_for_posts = get_option( 'page_for_posts' ); 1221 1222 if ( 'page' == $show_on_front && $page_for_posts ) { 1223 $link = get_permalink( $page_for_posts ); 1224 } else { 1225 $link = get_home_url(); 1226 } 1227 /** This filter is documented in wp-includes/link-template.php */ 1228 return apply_filters( 'post_type_archive_link', $link, $post_type ); 1229 } 1230 1231 if ( ! $post_type_obj->has_archive ) { 1232 return false; 1233 } 1234 1235 if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) { 1236 $struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive; 1237 if ( $post_type_obj->rewrite['with_front'] ) { 1238 $struct = $wp_rewrite->front . $struct; 1239 } else { 1240 $struct = $wp_rewrite->root . $struct; 1241 } 1242 $link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) ); 1243 } else { 1244 $link = home_url( '?post_type=' . $post_type ); 1245 } 1246 1247 /** 1248 * Filters the post type archive permalink. 1249 * 1250 * @since 3.1.0 1251 * 1252 * @param string $link The post type archive permalink. 1253 * @param string $post_type Post type name. 1254 */ 1255 return apply_filters( 'post_type_archive_link', $link, $post_type ); 1256 } 1257 1258 /** 1259 * Retrieves the permalink for a post type archive feed. 1260 * 1261 * @since 3.1.0 1262 * 1263 * @param string $post_type Post type 1264 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1265 * Default is the value of get_default_feed(). 1266 * @return string|false The post type feed permalink. 1267 */ 1268 function get_post_type_archive_feed_link( $post_type, $feed = '' ) { 1269 $default_feed = get_default_feed(); 1270 if ( empty( $feed ) ) { 1271 $feed = $default_feed; 1272 } 1273 1274 $link = get_post_type_archive_link( $post_type ); 1275 if ( ! $link ) { 1276 return false; 1277 } 1278 1279 $post_type_obj = get_post_type_object( $post_type ); 1280 if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) { 1281 $link = trailingslashit( $link ); 1282 $link .= 'feed/'; 1283 if ( $feed != $default_feed ) { 1284 $link .= "$feed/"; 1285 } 1286 } else { 1287 $link = add_query_arg( 'feed', $feed, $link ); 1288 } 1289 1290 /** 1291 * Filters the post type archive feed link. 1292 * 1293 * @since 3.1.0 1294 * 1295 * @param string $link The post type archive feed link. 1296 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 1297 */ 1298 return apply_filters( 'post_type_archive_feed_link', $link, $feed ); 1299 } 1300 1301 /** 1302 * Retrieves the URL used for the post preview. 1303 * 1304 * Allows additional query args to be appended. 1305 * 1306 * @since 4.4.0 1307 * 1308 * @param int|WP_Post $post Optional. Post ID or `WP_Post` object. Defaults to global `$post`. 1309 * @param array $query_args Optional. Array of additional query args to be appended to the link. 1310 * Default empty array. 1311 * @param string $preview_link Optional. Base preview link to be used if it should differ from the 1312 * post permalink. Default empty. 1313 * @return string|null URL used for the post preview, or null if the post does not exist. 1314 */ 1315 function get_preview_post_link( $post = null, $query_args = array(), $preview_link = '' ) { 1316 $post = get_post( $post ); 1317 if ( ! $post ) { 1318 return; 1319 } 1320 1321 $post_type_object = get_post_type_object( $post->post_type ); 1322 if ( is_post_type_viewable( $post_type_object ) ) { 1323 if ( ! $preview_link ) { 1324 $preview_link = set_url_scheme( get_permalink( $post ) ); 1325 } 1326 1327 $query_args['preview'] = 'true'; 1328 $preview_link = add_query_arg( $query_args, $preview_link ); 1329 } 1330 1331 /** 1332 * Filters the URL used for a post preview. 1333 * 1334 * @since 2.0.5 1335 * @since 4.0.0 Added the `$post` parameter. 1336 * 1337 * @param string $preview_link URL used for the post preview. 1338 * @param WP_Post $post Post object. 1339 */ 1340 return apply_filters( 'preview_post_link', $preview_link, $post ); 1341 } 1342 1343 /** 1344 * Retrieves the edit post link for post. 1345 * 1346 * Can be used within the WordPress loop or outside of it. Can be used with 1347 * pages, posts, attachments, and revisions. 1348 * 1349 * @since 2.3.0 1350 * 1351 * @param int|WP_Post $id Optional. Post ID or post object. Default is the global `$post`. 1352 * @param string $context Optional. How to output the '&' character. Default '&'. 1353 * @return string|null The edit post link for the given post. null if the post type is invalid or does 1354 * not allow an editing UI. 1355 */ 1356 function get_edit_post_link( $id = 0, $context = 'display' ) { 1357 $post = get_post( $id ); 1358 if ( ! $post ) { 1359 return; 1360 } 1361 1362 if ( 'revision' === $post->post_type ) { 1363 $action = ''; 1364 } elseif ( 'display' == $context ) { 1365 $action = '&action=edit'; 1366 } else { 1367 $action = '&action=edit'; 1368 } 1369 1370 $post_type_object = get_post_type_object( $post->post_type ); 1371 if ( ! $post_type_object ) { 1372 return; 1373 } 1374 1375 if ( ! current_user_can( 'edit_post', $post->ID ) ) { 1376 return; 1377 } 1378 1379 if ( $post_type_object->_edit_link ) { 1380 $link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) ); 1381 } else { 1382 $link = ''; 1383 } 1384 1385 /** 1386 * Filters the post edit link. 1387 * 1388 * @since 2.3.0 1389 * 1390 * @param string $link The edit link. 1391 * @param int $post_id Post ID. 1392 * @param string $context The link context. If set to 'display' then ampersands 1393 * are encoded. 1394 */ 1395 return apply_filters( 'get_edit_post_link', $link, $post->ID, $context ); 1396 } 1397 1398 /** 1399 * Displays the edit post link for post. 1400 * 1401 * @since 1.0.0 1402 * @since 4.4.0 The `$class` argument was added. 1403 * 1404 * @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null. 1405 * @param string $before Optional. Display before edit link. Default empty. 1406 * @param string $after Optional. Display after edit link. Default empty. 1407 * @param int|WP_Post $id Optional. Post ID or post object. Default is the global `$post`. 1408 * @param string $class Optional. Add custom class to link. Default 'post-edit-link'. 1409 */ 1410 function edit_post_link( $text = null, $before = '', $after = '', $id = 0, $class = 'post-edit-link' ) { 1411 $post = get_post( $id ); 1412 if ( ! $post ) { 1413 return; 1414 } 1415 1416 $url = get_edit_post_link( $post->ID ); 1417 if ( ! $url ) { 1418 return; 1419 } 1420 1421 if ( null === $text ) { 1422 $text = __( 'Edit This' ); 1423 } 1424 1425 $link = '<a class="' . esc_attr( $class ) . '" href="' . esc_url( $url ) . '">' . $text . '</a>'; 1426 1427 /** 1428 * Filters the post edit link anchor tag. 1429 * 1430 * @since 2.3.0 1431 * 1432 * @param string $link Anchor tag for the edit link. 1433 * @param int $post_id Post ID. 1434 * @param string $text Anchor text. 1435 */ 1436 echo $before . apply_filters( 'edit_post_link', $link, $post->ID, $text ) . $after; 1437 } 1438 1439 /** 1440 * Retrieves the delete posts link for post. 1441 * 1442 * Can be used within the WordPress loop or outside of it, with any post type. 1443 * 1444 * @since 2.9.0 1445 * 1446 * @param int|WP_Post $id Optional. Post ID or post object. Default is the global `$post`. 1447 * @param string $deprecated Not used. 1448 * @param bool $force_delete Optional. Whether to bypass trash and force deletion. Default false. 1449 * @return string|void The delete post link URL for the given post. 1450 */ 1451 function get_delete_post_link( $id = 0, $deprecated = '', $force_delete = false ) { 1452 if ( ! empty( $deprecated ) ) { 1453 _deprecated_argument( __FUNCTION__, '3.0.0' ); 1454 } 1455 1456 $post = get_post( $id ); 1457 if ( ! $post ) { 1458 return; 1459 } 1460 1461 $post_type_object = get_post_type_object( $post->post_type ); 1462 if ( ! $post_type_object ) { 1463 return; 1464 } 1465 1466 if ( ! current_user_can( 'delete_post', $post->ID ) ) { 1467 return; 1468 } 1469 1470 $action = ( $force_delete || ! EMPTY_TRASH_DAYS ) ? 'delete' : 'trash'; 1471 1472 $delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) ); 1473 1474 /** 1475 * Filters the post delete link. 1476 * 1477 * @since 2.9.0 1478 * 1479 * @param string $link The delete link. 1480 * @param int $post_id Post ID. 1481 * @param bool $force_delete Whether to bypass the trash and force deletion. Default false. 1482 */ 1483 return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete ); 1484 } 1485 1486 /** 1487 * Retrieves the edit comment link. 1488 * 1489 * @since 2.3.0 1490 * 1491 * @param int|WP_Comment $comment_id Optional. Comment ID or WP_Comment object. 1492 * @return string|void The edit comment link URL for the given comment. 1493 */ 1494 function get_edit_comment_link( $comment_id = 0 ) { 1495 $comment = get_comment( $comment_id ); 1496 1497 if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) { 1498 return; 1499 } 1500 1501 $location = admin_url( 'comment.php?action=editcomment&c=' ) . $comment->comment_ID; 1502 1503 /** 1504 * Filters the comment edit link. 1505 * 1506 * @since 2.3.0 1507 * 1508 * @param string $location The edit link. 1509 */ 1510 return apply_filters( 'get_edit_comment_link', $location ); 1511 } 1512 1513 /** 1514 * Displays the edit comment link with formatting. 1515 * 1516 * @since 1.0.0 1517 * 1518 * @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null. 1519 * @param string $before Optional. Display before edit link. Default empty. 1520 * @param string $after Optional. Display after edit link. Default empty. 1521 */ 1522 function edit_comment_link( $text = null, $before = '', $after = '' ) { 1523 $comment = get_comment(); 1524 1525 if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) { 1526 return; 1527 } 1528 1529 if ( null === $text ) { 1530 $text = __( 'Edit This' ); 1531 } 1532 1533 $link = '<a class="comment-edit-link" href="' . esc_url( get_edit_comment_link( $comment ) ) . '">' . $text . '</a>'; 1534 1535 /** 1536 * Filters the comment edit link anchor tag. 1537 * 1538 * @since 2.3.0 1539 * 1540 * @param string $link Anchor tag for the edit link. 1541 * @param int $comment_id Comment ID. 1542 * @param string $text Anchor text. 1543 */ 1544 echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID, $text ) . $after; 1545 } 1546 1547 /** 1548 * Displays the edit bookmark link. 1549 * 1550 * @since 2.7.0 1551 * 1552 * @param int|stdClass $link Optional. Bookmark ID. Default is the id of the current bookmark. 1553 * @return string|void The edit bookmark link URL. 1554 */ 1555 function get_edit_bookmark_link( $link = 0 ) { 1556 $link = get_bookmark( $link ); 1557 1558 if ( ! current_user_can( 'manage_links' ) ) { 1559 return; 1560 } 1561 1562 $location = admin_url( 'link.php?action=edit&link_id=' ) . $link->link_id; 1563 1564 /** 1565 * Filters the bookmark edit link. 1566 * 1567 * @since 2.7.0 1568 * 1569 * @param string $location The edit link. 1570 * @param int $link_id Bookmark ID. 1571 */ 1572 return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id ); 1573 } 1574 1575 /** 1576 * Displays the edit bookmark link anchor content. 1577 * 1578 * @since 2.7.0 1579 * 1580 * @param string $link Optional. Anchor text. Default empty. 1581 * @param string $before Optional. Display before edit link. Default empty. 1582 * @param string $after Optional. Display after edit link. Default empty. 1583 * @param int $bookmark Optional. Bookmark ID. Default is the current bookmark. 1584 */ 1585 function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) { 1586 $bookmark = get_bookmark( $bookmark ); 1587 1588 if ( ! current_user_can( 'manage_links' ) ) { 1589 return; 1590 } 1591 1592 if ( empty( $link ) ) { 1593 $link = __( 'Edit This' ); 1594 } 1595 1596 $link = '<a href="' . esc_url( get_edit_bookmark_link( $bookmark ) ) . '">' . $link . '</a>'; 1597 1598 /** 1599 * Filters the bookmark edit link anchor tag. 1600 * 1601 * @since 2.7.0 1602 * 1603 * @param string $link Anchor tag for the edit link. 1604 * @param int $link_id Bookmark ID. 1605 */ 1606 echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after; 1607 } 1608 1609 /** 1610 * Retrieves the edit user link. 1611 * 1612 * @since 3.5.0 1613 * 1614 * @param int $user_id Optional. User ID. Defaults to the current user. 1615 * @return string URL to edit user page or empty string. 1616 */ 1617 function get_edit_user_link( $user_id = null ) { 1618 if ( ! $user_id ) { 1619 $user_id = get_current_user_id(); 1620 } 1621 1622 if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) ) { 1623 return ''; 1624 } 1625 1626 $user = get_userdata( $user_id ); 1627 1628 if ( ! $user ) { 1629 return ''; 1630 } 1631 1632 if ( get_current_user_id() == $user->ID ) { 1633 $link = get_edit_profile_url( $user->ID ); 1634 } else { 1635 $link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) ); 1636 } 1637 1638 /** 1639 * Filters the user edit link. 1640 * 1641 * @since 3.5.0 1642 * 1643 * @param string $link The edit link. 1644 * @param int $user_id User ID. 1645 */ 1646 return apply_filters( 'get_edit_user_link', $link, $user->ID ); 1647 } 1648 1649 // Navigation links 1650 1651 /** 1652 * Retrieves the previous post that is adjacent to the current post. 1653 * 1654 * @since 1.5.0 1655 * 1656 * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. Default false. 1657 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 1658 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1659 * @return null|string|WP_Post Post object if successful. Null if global $post is not set. Empty string if no 1660 * corresponding post exists. 1661 */ 1662 function get_previous_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1663 return get_adjacent_post( $in_same_term, $excluded_terms, true, $taxonomy ); 1664 } 1665 1666 /** 1667 * Retrieves the next post that is adjacent to the current post. 1668 * 1669 * @since 1.5.0 1670 * 1671 * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. Default false. 1672 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 1673 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1674 * @return null|string|WP_Post Post object if successful. Null if global $post is not set. Empty string if no 1675 * corresponding post exists. 1676 */ 1677 function get_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1678 return get_adjacent_post( $in_same_term, $excluded_terms, false, $taxonomy ); 1679 } 1680 1681 /** 1682 * Retrieves the adjacent post. 1683 * 1684 * Can either be next or previous post. 1685 * 1686 * @since 2.5.0 1687 * 1688 * @global wpdb $wpdb WordPress database abstraction object. 1689 * 1690 * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. Default false. 1691 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 1692 * @param bool $previous Optional. Whether to retrieve previous post. Default true 1693 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1694 * @return null|string|WP_Post Post object if successful. Null if global $post is not set. Empty string if no 1695 * corresponding post exists. 1696 */ 1697 function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 1698 global $wpdb; 1699 1700 $post = get_post(); 1701 if ( ! $post || ! taxonomy_exists( $taxonomy ) ) { 1702 return null; 1703 } 1704 1705 $current_post_date = $post->post_date; 1706 1707 $join = ''; 1708 $where = ''; 1709 $adjacent = $previous ? 'previous' : 'next'; 1710 1711 if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) { 1712 // Back-compat, $excluded_terms used to be $excluded_categories with IDs separated by " and ". 1713 if ( false !== strpos( $excluded_terms, ' and ' ) ) { 1714 _deprecated_argument( 1715 __FUNCTION__, 1716 '3.3.0', 1717 sprintf( 1718 /* translators: %s: The word 'and'. */ 1719 __( 'Use commas instead of %s to separate excluded terms.' ), 1720 "'and'" 1721 ) 1722 ); 1723 $excluded_terms = explode( ' and ', $excluded_terms ); 1724 } else { 1725 $excluded_terms = explode( ',', $excluded_terms ); 1726 } 1727 1728 $excluded_terms = array_map( 'intval', $excluded_terms ); 1729 } 1730 1731 /** 1732 * Filters the IDs of terms excluded from adjacent post queries. 1733 * 1734 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1735 * of adjacency, 'next' or 'previous'. 1736 * 1737 * @since 4.4.0 1738 * 1739 * @param array $excluded_terms Array of excluded term IDs. 1740 */ 1741 $excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms ); 1742 1743 if ( $in_same_term || ! empty( $excluded_terms ) ) { 1744 if ( $in_same_term ) { 1745 $join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id"; 1746 $where .= $wpdb->prepare( 'AND tt.taxonomy = %s', $taxonomy ); 1747 1748 if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) { 1749 return ''; 1750 } 1751 $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); 1752 1753 // Remove any exclusions from the term array to include. 1754 $term_array = array_diff( $term_array, (array) $excluded_terms ); 1755 $term_array = array_map( 'intval', $term_array ); 1756 1757 if ( ! $term_array || is_wp_error( $term_array ) ) { 1758 return ''; 1759 } 1760 1761 $where .= ' AND tt.term_id IN (' . implode( ',', $term_array ) . ')'; 1762 } 1763 1764 if ( ! empty( $excluded_terms ) ) { 1765 $where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( ',', array_map( 'intval', $excluded_terms ) ) . ') )'; 1766 } 1767 } 1768 1769 // 'post_status' clause depends on the current user. 1770 if ( is_user_logged_in() ) { 1771 $user_id = get_current_user_id(); 1772 1773 $post_type_object = get_post_type_object( $post->post_type ); 1774 if ( empty( $post_type_object ) ) { 1775 $post_type_cap = $post->post_type; 1776 $read_private_cap = 'read_private_' . $post_type_cap . 's'; 1777 } else { 1778 $read_private_cap = $post_type_object->cap->read_private_posts; 1779 } 1780 1781 /* 1782 * Results should include private posts belonging to the current user, or private posts where the 1783 * current user has the 'read_private_posts' cap. 1784 */ 1785 $private_states = get_post_stati( array( 'private' => true ) ); 1786 $where .= " AND ( p.post_status = 'publish'"; 1787 foreach ( (array) $private_states as $state ) { 1788 if ( current_user_can( $read_private_cap ) ) { 1789 $where .= $wpdb->prepare( ' OR p.post_status = %s', $state ); 1790 } else { 1791 $where .= $wpdb->prepare( ' OR (p.post_author = %d AND p.post_status = %s)', $user_id, $state ); 1792 } 1793 } 1794 $where .= ' )'; 1795 } else { 1796 $where .= " AND p.post_status = 'publish'"; 1797 } 1798 1799 $op = $previous ? '<' : '>'; 1800 $order = $previous ? 'DESC' : 'ASC'; 1801 1802 /** 1803 * Filters the JOIN clause in the SQL for an adjacent post query. 1804 * 1805 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1806 * of adjacency, 'next' or 'previous'. 1807 * 1808 * @since 2.5.0 1809 * @since 4.4.0 Added the `$taxonomy` and `$post` parameters. 1810 * 1811 * @param string $join The JOIN clause in the SQL. 1812 * @param bool $in_same_term Whether post should be in a same taxonomy term. 1813 * @param array $excluded_terms Array of excluded term IDs. 1814 * @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true. 1815 * @param WP_Post $post WP_Post object. 1816 */ 1817 $join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms, $taxonomy, $post ); 1818 1819 /** 1820 * Filters the WHERE clause in the SQL for an adjacent post query. 1821 * 1822 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1823 * of adjacency, 'next' or 'previous'. 1824 * 1825 * @since 2.5.0 1826 * @since 4.4.0 Added the `$taxonomy` and `$post` parameters. 1827 * 1828 * @param string $where The `WHERE` clause in the SQL. 1829 * @param bool $in_same_term Whether post should be in a same taxonomy term. 1830 * @param array $excluded_terms Array of excluded term IDs. 1831 * @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true. 1832 * @param WP_Post $post WP_Post object. 1833 */ 1834 $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare( "WHERE p.post_date $op %s AND p.post_type = %s $where", $current_post_date, $post->post_type ), $in_same_term, $excluded_terms, $taxonomy, $post ); 1835 1836 /** 1837 * Filters the ORDER BY clause in the SQL for an adjacent post query. 1838 * 1839 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1840 * of adjacency, 'next' or 'previous'. 1841 * 1842 * @since 2.5.0 1843 * @since 4.4.0 Added the `$post` parameter. 1844 * @since 4.9.0 Added the `$order` parameter. 1845 * 1846 * @param string $order_by The `ORDER BY` clause in the SQL. 1847 * @param WP_Post $post WP_Post object. 1848 * @param string $order Sort order. 'DESC' for previous post, 'ASC' for next. 1849 */ 1850 $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post, $order ); 1851 1852 $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort"; 1853 $query_key = 'adjacent_post_' . md5( $query ); 1854 $result = wp_cache_get( $query_key, 'counts' ); 1855 if ( false !== $result ) { 1856 if ( $result ) { 1857 $result = get_post( $result ); 1858 } 1859 return $result; 1860 } 1861 1862 $result = $wpdb->get_var( $query ); 1863 if ( null === $result ) { 1864 $result = ''; 1865 } 1866 1867 wp_cache_set( $query_key, $result, 'counts' ); 1868 1869 if ( $result ) { 1870 $result = get_post( $result ); 1871 } 1872 1873 return $result; 1874 } 1875 1876 /** 1877 * Retrieves the adjacent post relational link. 1878 * 1879 * Can either be next or previous post relational link. 1880 * 1881 * @since 2.8.0 1882 * 1883 * @param string $title Optional. Link title format. Default '%title'. 1884 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 1885 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 1886 * @param bool $previous Optional. Whether to display link to previous or next post. Default true. 1887 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1888 * @return string|void The adjacent post relational link URL. 1889 */ 1890 function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 1891 $post = get_post(); 1892 if ( $previous && is_attachment() && $post ) { 1893 $post = get_post( $post->post_parent ); 1894 } else { 1895 $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy ); 1896 } 1897 1898 if ( empty( $post ) ) { 1899 return; 1900 } 1901 1902 $post_title = the_title_attribute( 1903 array( 1904 'echo' => false, 1905 'post' => $post, 1906 ) 1907 ); 1908 1909 if ( empty( $post_title ) ) { 1910 $post_title = $previous ? __( 'Previous Post' ) : __( 'Next Post' ); 1911 } 1912 1913 $date = mysql2date( get_option( 'date_format' ), $post->post_date ); 1914 1915 $title = str_replace( '%title', $post_title, $title ); 1916 $title = str_replace( '%date', $date, $title ); 1917 1918 $link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='"; 1919 $link .= esc_attr( $title ); 1920 $link .= "' href='" . get_permalink( $post ) . "' />\n"; 1921 1922 $adjacent = $previous ? 'previous' : 'next'; 1923 1924 /** 1925 * Filters the adjacent post relational link. 1926 * 1927 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1928 * of adjacency, 'next' or 'previous'. 1929 * 1930 * @since 2.8.0 1931 * 1932 * @param string $link The relational link. 1933 */ 1934 return apply_filters( "{$adjacent}_post_rel_link", $link ); 1935 } 1936 1937 /** 1938 * Displays the relational links for the posts adjacent to the current post. 1939 * 1940 * @since 2.8.0 1941 * 1942 * @param string $title Optional. Link title format. Default '%title'. 1943 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 1944 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 1945 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1946 */ 1947 function adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1948 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy ); 1949 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy ); 1950 } 1951 1952 /** 1953 * Displays relational links for the posts adjacent to the current post for single post pages. 1954 * 1955 * This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins 1956 * or theme templates. 1957 * 1958 * @since 3.0.0 1959 * 1960 * @see adjacent_posts_rel_link() 1961 */ 1962 function adjacent_posts_rel_link_wp_head() { 1963 if ( ! is_single() || is_attachment() ) { 1964 return; 1965 } 1966 adjacent_posts_rel_link(); 1967 } 1968 1969 /** 1970 * Displays the relational link for the next post adjacent to the current post. 1971 * 1972 * @since 2.8.0 1973 * 1974 * @see get_adjacent_post_rel_link() 1975 * 1976 * @param string $title Optional. Link title format. Default '%title'. 1977 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 1978 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 1979 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1980 */ 1981 function next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1982 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy ); 1983 } 1984 1985 /** 1986 * Displays the relational link for the previous post adjacent to the current post. 1987 * 1988 * @since 2.8.0 1989 * 1990 * @see get_adjacent_post_rel_link() 1991 * 1992 * @param string $title Optional. Link title format. Default '%title'. 1993 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 1994 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default true. 1995 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 1996 */ 1997 function prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1998 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy ); 1999 } 2000 2001 /** 2002 * Retrieves the boundary post. 2003 * 2004 * Boundary being either the first or last post by publish date within the constraints specified 2005 * by $in_same_term or $excluded_terms. 2006 * 2007 * @since 2.8.0 2008 * 2009 * @param bool $in_same_term Optional. Whether returned post should be in a same taxonomy term. 2010 * Default false. 2011 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2012 * Default empty. 2013 * @param bool $start Optional. Whether to retrieve first or last post. Default true 2014 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2015 * @return null|array Array containing the boundary post object if successful, null otherwise. 2016 */ 2017 function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) { 2018 $post = get_post(); 2019 if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) ) { 2020 return null; 2021 } 2022 2023 $query_args = array( 2024 'posts_per_page' => 1, 2025 'order' => $start ? 'ASC' : 'DESC', 2026 'update_post_term_cache' => false, 2027 'update_post_meta_cache' => false, 2028 ); 2029 2030 $term_array = array(); 2031 2032 if ( ! is_array( $excluded_terms ) ) { 2033 if ( ! empty( $excluded_terms ) ) { 2034 $excluded_terms = explode( ',', $excluded_terms ); 2035 } else { 2036 $excluded_terms = array(); 2037 } 2038 } 2039 2040 if ( $in_same_term || ! empty( $excluded_terms ) ) { 2041 if ( $in_same_term ) { 2042 $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); 2043 } 2044 2045 if ( ! empty( $excluded_terms ) ) { 2046 $excluded_terms = array_map( 'intval', $excluded_terms ); 2047 $excluded_terms = array_diff( $excluded_terms, $term_array ); 2048 2049 $inverse_terms = array(); 2050 foreach ( $excluded_terms as $excluded_term ) { 2051 $inverse_terms[] = $excluded_term * -1; 2052 } 2053 $excluded_terms = $inverse_terms; 2054 } 2055 2056 $query_args['tax_query'] = array( 2057 array( 2058 'taxonomy' => $taxonomy, 2059 'terms' => array_merge( $term_array, $excluded_terms ), 2060 ), 2061 ); 2062 } 2063 2064 return get_posts( $query_args ); 2065 } 2066 2067 /** 2068 * Retrieves the previous post link that is adjacent to the current post. 2069 * 2070 * @since 3.7.0 2071 * 2072 * @param string $format Optional. Link anchor format. Default '« %link'. 2073 * @param string $link Optional. Link permalink format. Default '%title'. 2074 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 2075 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 2076 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2077 * @return string The link URL of the previous post in relation to the current post. 2078 */ 2079 function get_previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2080 return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, true, $taxonomy ); 2081 } 2082 2083 /** 2084 * Displays the previous post link that is adjacent to the current post. 2085 * 2086 * @since 1.5.0 2087 * 2088 * @see get_previous_post_link() 2089 * 2090 * @param string $format Optional. Link anchor format. Default '« %link'. 2091 * @param string $link Optional. Link permalink format. Default '%title'. 2092 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 2093 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 2094 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2095 */ 2096 function previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2097 echo get_previous_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy ); 2098 } 2099 2100 /** 2101 * Retrieves the next post link that is adjacent to the current post. 2102 * 2103 * @since 3.7.0 2104 * 2105 * @param string $format Optional. Link anchor format. Default '« %link'. 2106 * @param string $link Optional. Link permalink format. Default '%title'. 2107 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 2108 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 2109 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2110 * @return string The link URL of the next post in relation to the current post. 2111 */ 2112 function get_next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2113 return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, false, $taxonomy ); 2114 } 2115 2116 /** 2117 * Displays the next post link that is adjacent to the current post. 2118 * 2119 * @since 1.5.0 2120 * @see get_next_post_link() 2121 * 2122 * @param string $format Optional. Link anchor format. Default '« %link'. 2123 * @param string $link Optional. Link permalink format. Default '%title' 2124 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 2125 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty. 2126 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2127 */ 2128 function next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2129 echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy ); 2130 } 2131 2132 /** 2133 * Retrieves the adjacent post link. 2134 * 2135 * Can be either next post link or previous. 2136 * 2137 * @since 3.7.0 2138 * 2139 * @param string $format Link anchor format. 2140 * @param string $link Link permalink format. 2141 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 2142 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs. Default empty. 2143 * @param bool $previous Optional. Whether to display link to previous or next post. Default true. 2144 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2145 * @return string The link URL of the previous or next post in relation to the current post. 2146 */ 2147 function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 2148 if ( $previous && is_attachment() ) { 2149 $post = get_post( get_post()->post_parent ); 2150 } else { 2151 $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy ); 2152 } 2153 2154 if ( ! $post ) { 2155 $output = ''; 2156 } else { 2157 $title = $post->post_title; 2158 2159 if ( empty( $post->post_title ) ) { 2160 $title = $previous ? __( 'Previous Post' ) : __( 'Next Post' ); 2161 } 2162 2163 /** This filter is documented in wp-includes/post-template.php */ 2164 $title = apply_filters( 'the_title', $title, $post->ID ); 2165 2166 $date = mysql2date( get_option( 'date_format' ), $post->post_date ); 2167 $rel = $previous ? 'prev' : 'next'; 2168 2169 $string = '<a href="' . get_permalink( $post ) . '" rel="' . $rel . '">'; 2170 $inlink = str_replace( '%title', $title, $link ); 2171 $inlink = str_replace( '%date', $date, $inlink ); 2172 $inlink = $string . $inlink . '</a>'; 2173 2174 $output = str_replace( '%link', $inlink, $format ); 2175 } 2176 2177 $adjacent = $previous ? 'previous' : 'next'; 2178 2179 /** 2180 * Filters the adjacent post link. 2181 * 2182 * The dynamic portion of the hook name, `$adjacent`, refers to the type 2183 * of adjacency, 'next' or 'previous'. 2184 * 2185 * @since 2.6.0 2186 * @since 4.2.0 Added the `$adjacent` parameter. 2187 * 2188 * @param string $output The adjacent post link. 2189 * @param string $format Link anchor format. 2190 * @param string $link Link permalink format. 2191 * @param WP_Post $post The adjacent post. 2192 * @param string $adjacent Whether the post is previous or next. 2193 */ 2194 return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post, $adjacent ); 2195 } 2196 2197 /** 2198 * Displays the adjacent post link. 2199 * 2200 * Can be either next post link or previous. 2201 * 2202 * @since 2.5.0 2203 * 2204 * @param string $format Link anchor format. 2205 * @param string $link Link permalink format. 2206 * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false. 2207 * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs. Default empty. 2208 * @param bool $previous Optional. Whether to display link to previous or next post. Default true. 2209 * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. 2210 */ 2211 function adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 2212 echo get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, $previous, $taxonomy ); 2213 } 2214 2215 /** 2216 * Retrieves the link for a page number. 2217 * 2218 * @since 1.5.0 2219 * 2220 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 2221 * 2222 * @param int $pagenum Optional. Page number. Default 1. 2223 * @param bool $escape Optional. Whether to escape the URL for display, with esc_url(). Defaults to true. 2224 * Otherwise, prepares the URL with esc_url_raw(). 2225 * @return string The link URL for the given page number. 2226 */ 2227 function get_pagenum_link( $pagenum = 1, $escape = true ) { 2228 global $wp_rewrite; 2229 2230 $pagenum = (int) $pagenum; 2231 2232 $request = remove_query_arg( 'paged' ); 2233 2234 $home_root = parse_url( home_url() ); 2235 $home_root = ( isset( $home_root['path'] ) ) ? $home_root['path'] : ''; 2236 $home_root = preg_quote( $home_root, '|' ); 2237 2238 $request = preg_replace( '|^' . $home_root . '|i', '', $request ); 2239 $request = preg_replace( '|^/+|', '', $request ); 2240 2241 if ( ! $wp_rewrite->using_permalinks() || is_admin() ) { 2242 $base = trailingslashit( get_bloginfo( 'url' ) ); 2243 2244 if ( $pagenum > 1 ) { 2245 $result = add_query_arg( 'paged', $pagenum, $base . $request ); 2246 } else { 2247 $result = $base . $request; 2248 } 2249 } else { 2250 $qs_regex = '|\?.*?$|'; 2251 preg_match( $qs_regex, $request, $qs_match ); 2252 2253 if ( ! empty( $qs_match[0] ) ) { 2254 $query_string = $qs_match[0]; 2255 $request = preg_replace( $qs_regex, '', $request ); 2256 } else { 2257 $query_string = ''; 2258 } 2259 2260 $request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request ); 2261 $request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request ); 2262 $request = ltrim( $request, '/' ); 2263 2264 $base = trailingslashit( get_bloginfo( 'url' ) ); 2265 2266 if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) ) { 2267 $base .= $wp_rewrite->index . '/'; 2268 } 2269 2270 if ( $pagenum > 1 ) { 2271 $request = ( ( ! empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . '/' . $pagenum, 'paged' ); 2272 } 2273 2274 $result = $base . $request . $query_string; 2275 } 2276 2277 /** 2278 * Filters the page number link for the current request. 2279 * 2280 * @since 2.5.0 2281 * @since 5.2.0 Added the `$pagenum` argument. 2282 * 2283 * @param string $result The page number link. 2284 * @param int $pagenum The page number. 2285 */ 2286 $result = apply_filters( 'get_pagenum_link', $result, $pagenum ); 2287 2288 if ( $escape ) { 2289 return esc_url( $result ); 2290 } else { 2291 return esc_url_raw( $result ); 2292 } 2293 } 2294 2295 /** 2296 * Retrieves the next posts page link. 2297 * 2298 * Backported from 2.1.3 to 2.0.10. 2299 * 2300 * @since 2.0.10 2301 * 2302 * @global int $paged 2303 * 2304 * @param int $max_page Optional. Max pages. Default 0. 2305 * @return string|void The link URL for next posts page. 2306 */ 2307 function get_next_posts_page_link( $max_page = 0 ) { 2308 global $paged; 2309 2310 if ( ! is_single() ) { 2311 if ( ! $paged ) { 2312 $paged = 1; 2313 } 2314 $nextpage = intval( $paged ) + 1; 2315 if ( ! $max_page || $max_page >= $nextpage ) { 2316 return get_pagenum_link( $nextpage ); 2317 } 2318 } 2319 } 2320 2321 /** 2322 * Displays or retrieves the next posts page link. 2323 * 2324 * @since 0.71 2325 * 2326 * @param int $max_page Optional. Max pages. Default 0. 2327 * @param bool $echo Optional. Whether to echo the link. Default true. 2328 * @return string|void The link URL for next posts page if `$echo = false`. 2329 */ 2330 function next_posts( $max_page = 0, $echo = true ) { 2331 $output = esc_url( get_next_posts_page_link( $max_page ) ); 2332 2333 if ( $echo ) { 2334 echo $output; 2335 } else { 2336 return $output; 2337 } 2338 } 2339 2340 /** 2341 * Retrieves the next posts page link. 2342 * 2343 * @since 2.7.0 2344 * 2345 * @global int $paged 2346 * @global WP_Query $wp_query WordPress Query object. 2347 * 2348 * @param string $label Content for link text. 2349 * @param int $max_page Optional. Max pages. Default 0. 2350 * @return string|void HTML-formatted next posts page link. 2351 */ 2352 function get_next_posts_link( $label = null, $max_page = 0 ) { 2353 global $paged, $wp_query; 2354 2355 if ( ! $max_page ) { 2356 $max_page = $wp_query->max_num_pages; 2357 } 2358 2359 if ( ! $paged ) { 2360 $paged = 1; 2361 } 2362 2363 $nextpage = intval( $paged ) + 1; 2364 2365 if ( null === $label ) { 2366 $label = __( 'Next Page »' ); 2367 } 2368 2369 if ( ! is_single() && ( $nextpage <= $max_page ) ) { 2370 /** 2371 * Filters the anchor tag attributes for the next posts page link. 2372 * 2373 * @since 2.7.0 2374 * 2375 * @param string $attributes Attributes for the anchor tag. 2376 */ 2377 $attr = apply_filters( 'next_posts_link_attributes', '' ); 2378 2379 return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) . '</a>'; 2380 } 2381 } 2382 2383 /** 2384 * Displays the next posts page link. 2385 * 2386 * @since 0.71 2387 * 2388 * @param string $label Content for link text. 2389 * @param int $max_page Optional. Max pages. Default 0. 2390 */ 2391 function next_posts_link( $label = null, $max_page = 0 ) { 2392 echo get_next_posts_link( $label, $max_page ); 2393 } 2394 2395 /** 2396 * Retrieves the previous posts page link. 2397 * 2398 * Will only return string, if not on a single page or post. 2399 * 2400 * Backported to 2.0.10 from 2.1.3. 2401 * 2402 * @since 2.0.10 2403 * 2404 * @global int $paged 2405 * 2406 * @return string|void The link for the previous posts page. 2407 */ 2408 function get_previous_posts_page_link() { 2409 global $paged; 2410 2411 if ( ! is_single() ) { 2412 $nextpage = intval( $paged ) - 1; 2413 if ( $nextpage < 1 ) { 2414 $nextpage = 1; 2415 } 2416 return get_pagenum_link( $nextpage ); 2417 } 2418 } 2419 2420 /** 2421 * Displays or retrieves the previous posts page link. 2422 * 2423 * @since 0.71 2424 * 2425 * @param bool $echo Optional. Whether to echo the link. Default true. 2426 * @return string|void The previous posts page link if `$echo = false`. 2427 */ 2428 function previous_posts( $echo = true ) { 2429 $output = esc_url( get_previous_posts_page_link() ); 2430 2431 if ( $echo ) { 2432 echo $output; 2433 } else { 2434 return $output; 2435 } 2436 } 2437 2438 /** 2439 * Retrieves the previous posts page link. 2440 * 2441 * @since 2.7.0 2442 * 2443 * @global int $paged 2444 * 2445 * @param string $label Optional. Previous page link text. 2446 * @return string|void HTML-formatted previous page link. 2447 */ 2448 function get_previous_posts_link( $label = null ) { 2449 global $paged; 2450 2451 if ( null === $label ) { 2452 $label = __( '« Previous Page' ); 2453 } 2454 2455 if ( ! is_single() && $paged > 1 ) { 2456 /** 2457 * Filters the anchor tag attributes for the previous posts page link. 2458 * 2459 * @since 2.7.0 2460 * 2461 * @param string $attributes Attributes for the anchor tag. 2462 */ 2463 $attr = apply_filters( 'previous_posts_link_attributes', '' ); 2464 return '<a href="' . previous_posts( false ) . "\" $attr>" . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) . '</a>'; 2465 } 2466 } 2467 2468 /** 2469 * Displays the previous posts page link. 2470 * 2471 * @since 0.71 2472 * 2473 * @param string $label Optional. Previous page link text. 2474 */ 2475 function previous_posts_link( $label = null ) { 2476 echo get_previous_posts_link( $label ); 2477 } 2478 2479 /** 2480 * Retrieves the post pages link navigation for previous and next pages. 2481 * 2482 * @since 2.8.0 2483 * 2484 * @global WP_Query $wp_query WordPress Query object. 2485 * 2486 * @param string|array $args { 2487 * Optional. Arguments to build the post pages link navigation. 2488 * 2489 * @type string $sep Separator character. Default '—'. 2490 * @type string $prelabel Link text to display for the previous page link. 2491 * Default '« Previous Page'. 2492 * @type string $nxtlabel Link text to display for the next page link. 2493 * Default 'Next Page »'. 2494 * } 2495 * @return string The posts link navigation. 2496 */ 2497 function get_posts_nav_link( $args = array() ) { 2498 global $wp_query; 2499 2500 $return = ''; 2501 2502 if ( ! is_singular() ) { 2503 $defaults = array( 2504 'sep' => ' — ', 2505 'prelabel' => __( '« Previous Page' ), 2506 'nxtlabel' => __( 'Next Page »' ), 2507 ); 2508 $args = wp_parse_args( $args, $defaults ); 2509 2510 $max_num_pages = $wp_query->max_num_pages; 2511 $paged = get_query_var( 'paged' ); 2512 2513 //only have sep if there's both prev and next results 2514 if ( $paged < 2 || $paged >= $max_num_pages ) { 2515 $args['sep'] = ''; 2516 } 2517 2518 if ( $max_num_pages > 1 ) { 2519 $return = get_previous_posts_link( $args['prelabel'] ); 2520 $return .= preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $args['sep'] ); 2521 $return .= get_next_posts_link( $args['nxtlabel'] ); 2522 } 2523 } 2524 return $return; 2525 2526 } 2527 2528 /** 2529 * Displays the post pages link navigation for previous and next pages. 2530 * 2531 * @since 0.71 2532 * 2533 * @param string $sep Optional. Separator for posts navigation links. Default empty. 2534 * @param string $prelabel Optional. Label for previous pages. Default empty. 2535 * @param string $nxtlabel Optional Label for next pages. Default empty. 2536 */ 2537 function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) { 2538 $args = array_filter( compact( 'sep', 'prelabel', 'nxtlabel' ) ); 2539 echo get_posts_nav_link( $args ); 2540 } 2541 2542 /** 2543 * Retrieves the navigation to next/previous post, when applicable. 2544 * 2545 * @since 4.1.0 2546 * @since 4.4.0 Introduced the `in_same_term`, `excluded_terms`, and `taxonomy` arguments. 2547 * 2548 * @param array $args { 2549 * Optional. Default post navigation arguments. Default empty array. 2550 * 2551 * @type string $prev_text Anchor text to display in the previous post link. Default '%title'. 2552 * @type string $next_text Anchor text to display in the next post link. Default '%title'. 2553 * @type bool $in_same_term Whether link should be in a same taxonomy term. Default false. 2554 * @type array|string $excluded_terms Array or comma-separated list of excluded term IDs. Default empty. 2555 * @type string $taxonomy Taxonomy, if `$in_same_term` is true. Default 'category'. 2556 * @type string $screen_reader_text Screen reader text for nav element. Default 'Post navigation'. 2557 * } 2558 * @return string Markup for post links. 2559 */ 2560 function get_the_post_navigation( $args = array() ) { 2561 $args = wp_parse_args( 2562 $args, 2563 array( 2564 'prev_text' => '%title', 2565 'next_text' => '%title', 2566 'in_same_term' => false, 2567 'excluded_terms' => '', 2568 'taxonomy' => 'category', 2569 'screen_reader_text' => __( 'Post navigation' ), 2570 ) 2571 ); 2572 2573 $navigation = ''; 2574 2575 $previous = get_previous_post_link( 2576 '<div class="nav-previous">%link</div>', 2577 $args['prev_text'], 2578 $args['in_same_term'], 2579 $args['excluded_terms'], 2580 $args['taxonomy'] 2581 ); 2582 2583 $next = get_next_post_link( 2584 '<div class="nav-next">%link</div>', 2585 $args['next_text'], 2586 $args['in_same_term'], 2587 $args['excluded_terms'], 2588 $args['taxonomy'] 2589 ); 2590 2591 // Only add markup if there's somewhere to navigate to. 2592 if ( $previous || $next ) { 2593 $navigation = _navigation_markup( $previous . $next, 'post-navigation', $args['screen_reader_text'] ); 2594 } 2595 2596 return $navigation; 2597 } 2598 2599 /** 2600 * Displays the navigation to next/previous post, when applicable. 2601 * 2602 * @since 4.1.0 2603 * 2604 * @param array $args Optional. See get_the_post_navigation() for available arguments. 2605 * Default empty array. 2606 */ 2607 function the_post_navigation( $args = array() ) { 2608 echo get_the_post_navigation( $args ); 2609 } 2610 2611 /** 2612 * Returns the navigation to next/previous set of posts, when applicable. 2613 * 2614 * @since 4.1.0 2615 * 2616 * @global WP_Query $wp_query WordPress Query object. 2617 * 2618 * @param array $args { 2619 * Optional. Default posts navigation arguments. Default empty array. 2620 * 2621 * @type string $prev_text Anchor text to display in the previous posts link. 2622 * Default 'Older posts'. 2623 * @type string $next_text Anchor text to display in the next posts link. 2624 * Default 'Newer posts'. 2625 * @type string $screen_reader_text Screen reader text for nav element. 2626 * Default 'Posts navigation'. 2627 * } 2628 * @return string Markup for posts links. 2629 */ 2630 function get_the_posts_navigation( $args = array() ) { 2631 $navigation = ''; 2632 2633 // Don't print empty markup if there's only one page. 2634 if ( $GLOBALS['wp_query']->max_num_pages > 1 ) { 2635 $args = wp_parse_args( 2636 $args, 2637 array( 2638 'prev_text' => __( 'Older posts' ), 2639 'next_text' => __( 'Newer posts' ), 2640 'screen_reader_text' => __( 'Posts navigation' ), 2641 ) 2642 ); 2643 2644 $next_link = get_previous_posts_link( $args['next_text'] ); 2645 $prev_link = get_next_posts_link( $args['prev_text'] ); 2646 2647 if ( $prev_link ) { 2648 $navigation .= '<div class="nav-previous">' . $prev_link . '</div>'; 2649 } 2650 2651 if ( $next_link ) { 2652 $navigation .= '<div class="nav-next">' . $next_link . '</div>'; 2653 } 2654 2655 $navigation = _navigation_markup( $navigation, 'posts-navigation', $args['screen_reader_text'] ); 2656 } 2657 2658 return $navigation; 2659 } 2660 2661 /** 2662 * Displays the navigation to next/previous set of posts, when applicable. 2663 * 2664 * @since 4.1.0 2665 * 2666 * @param array $args Optional. See get_the_posts_navigation() for available arguments. 2667 * Default empty array. 2668 */ 2669 function the_posts_navigation( $args = array() ) { 2670 echo get_the_posts_navigation( $args ); 2671 } 2672 2673 /** 2674 * Retrieves a paginated navigation to next/previous set of posts, when applicable. 2675 * 2676 * @since 4.1.0 2677 * 2678 * @param array $args { 2679 * Optional. Default pagination arguments, see paginate_links(). 2680 * 2681 * @type string $screen_reader_text Screen reader text for navigation element. 2682 * Default 'Posts navigation'. 2683 * } 2684 * @return string Markup for pagination links. 2685 */ 2686 function get_the_posts_pagination( $args = array() ) { 2687 $navigation = ''; 2688 2689 // Don't print empty markup if there's only one page. 2690 if ( $GLOBALS['wp_query']->max_num_pages > 1 ) { 2691 $args = wp_parse_args( 2692 $args, 2693 array( 2694 'mid_size' => 1, 2695 'prev_text' => _x( 'Previous', 'previous set of posts' ), 2696 'next_text' => _x( 'Next', 'next set of posts' ), 2697 'screen_reader_text' => __( 'Posts navigation' ), 2698 ) 2699 ); 2700 2701 // Make sure we get a string back. Plain is the next best thing. 2702 if ( isset( $args['type'] ) && 'array' == $args['type'] ) { 2703 $args['type'] = 'plain'; 2704 } 2705 2706 // Set up paginated links. 2707 $links = paginate_links( $args ); 2708 2709 if ( $links ) { 2710 $navigation = _navigation_markup( $links, 'pagination', $args['screen_reader_text'] ); 2711 } 2712 } 2713 2714 return $navigation; 2715 } 2716 2717 /** 2718 * Displays a paginated navigation to next/previous set of posts, when applicable. 2719 * 2720 * @since 4.1.0 2721 * 2722 * @param array $args Optional. See get_the_posts_pagination() for available arguments. 2723 * Default empty array. 2724 */ 2725 function the_posts_pagination( $args = array() ) { 2726 echo get_the_posts_pagination( $args ); 2727 } 2728 2729 /** 2730 * Wraps passed links in navigational markup. 2731 * 2732 * @since 4.1.0 2733 * @access private 2734 * 2735 * @param string $links Navigational links. 2736 * @param string $class Optional. Custom class for nav element. Default: 'posts-navigation'. 2737 * @param string $screen_reader_text Optional. Screen reader text for nav element. Default: 'Posts navigation'. 2738 * @return string Navigation template tag. 2739 */ 2740 function _navigation_markup( $links, $class = 'posts-navigation', $screen_reader_text = '' ) { 2741 if ( empty( $screen_reader_text ) ) { 2742 $screen_reader_text = __( 'Posts navigation' ); 2743 } 2744 2745 $template = ' 2746 <nav class="navigation %1$s" role="navigation"> 2747 <h2 class="screen-reader-text">%2$s</h2> 2748 <div class="nav-links">%3$s</div> 2749 </nav>'; 2750 2751 /** 2752 * Filters the navigation markup template. 2753 * 2754 * Note: The filtered template HTML must contain specifiers for the navigation 2755 * class (%1$s), the screen-reader-text value (%2$s), and placement of the 2756 * navigation links (%3$s): 2757 * 2758 * <nav class="navigation %1$s" role="navigation"> 2759 * <h2 class="screen-reader-text">%2$s</h2> 2760 * <div class="nav-links">%3$s</div> 2761 * </nav> 2762 * 2763 * @since 4.4.0 2764 * 2765 * @param string $template The default template. 2766 * @param string $class The class passed by the calling function. 2767 * @return string Navigation template. 2768 */ 2769 $template = apply_filters( 'navigation_markup_template', $template, $class ); 2770 2771 return sprintf( $template, sanitize_html_class( $class ), esc_html( $screen_reader_text ), $links ); 2772 } 2773 2774 /** 2775 * Retrieves the comments page number link. 2776 * 2777 * @since 2.7.0 2778 * 2779 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 2780 * 2781 * @param int $pagenum Optional. Page number. Default 1. 2782 * @param int $max_page Optional. The maximum number of comment pages. Default 0. 2783 * @return string The comments page number link URL. 2784 */ 2785 function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) { 2786 global $wp_rewrite; 2787 2788 $pagenum = (int) $pagenum; 2789 2790 $result = get_permalink(); 2791 2792 if ( 'newest' == get_option( 'default_comments_page' ) ) { 2793 if ( $pagenum != $max_page ) { 2794 if ( $wp_rewrite->using_permalinks() ) { 2795 $result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' ); 2796 } else { 2797 $result = add_query_arg( 'cpage', $pagenum, $result ); 2798 } 2799 } 2800 } elseif ( $pagenum > 1 ) { 2801 if ( $wp_rewrite->using_permalinks() ) { 2802 $result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' ); 2803 } else { 2804 $result = add_query_arg( 'cpage', $pagenum, $result ); 2805 } 2806 } 2807 2808 $result .= '#comments'; 2809 2810 /** 2811 * Filters the comments page number link for the current request. 2812 * 2813 * @since 2.7.0 2814 * 2815 * @param string $result The comments page number link. 2816 */ 2817 return apply_filters( 'get_comments_pagenum_link', $result ); 2818 } 2819 2820 /** 2821 * Retrieves the link to the next comments page. 2822 * 2823 * @since 2.7.1 2824 * 2825 * @global WP_Query $wp_query WordPress Query object. 2826 * 2827 * @param string $label Optional. Label for link text. Default empty. 2828 * @param int $max_page Optional. Max page. Default 0. 2829 * @return string|void HTML-formatted link for the next page of comments. 2830 */ 2831 function get_next_comments_link( $label = '', $max_page = 0 ) { 2832 global $wp_query; 2833 2834 if ( ! is_singular() ) { 2835 return; 2836 } 2837 2838 $page = get_query_var( 'cpage' ); 2839 2840 if ( ! $page ) { 2841 $page = 1; 2842 } 2843 2844 $nextpage = intval( $page ) + 1; 2845 2846 if ( empty( $max_page ) ) { 2847 $max_page = $wp_query->max_num_comment_pages; 2848 } 2849 2850 if ( empty( $max_page ) ) { 2851 $max_page = get_comment_pages_count(); 2852 } 2853 2854 if ( $nextpage > $max_page ) { 2855 return; 2856 } 2857 2858 if ( empty( $label ) ) { 2859 $label = __( 'Newer Comments »' ); 2860 } 2861 2862 /** 2863 * Filters the anchor tag attributes for the next comments page link. 2864 * 2865 * @since 2.7.0 2866 * 2867 * @param string $attributes Attributes for the anchor tag. 2868 */ 2869 return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) . '</a>'; 2870 } 2871 2872 /** 2873 * Displays the link to the next comments page. 2874 * 2875 * @since 2.7.0 2876 * 2877 * @param string $label Optional. Label for link text. Default empty. 2878 * @param int $max_page Optional. Max page. Default 0. 2879 */ 2880 function next_comments_link( $label = '', $max_page = 0 ) { 2881 echo get_next_comments_link( $label, $max_page ); 2882 } 2883 2884 /** 2885 * Retrieves the link to the previous comments page. 2886 * 2887 * @since 2.7.1 2888 * 2889 * @param string $label Optional. Label for comments link text. Default empty. 2890 * @return string|void HTML-formatted link for the previous page of comments. 2891 */ 2892 function get_previous_comments_link( $label = '' ) { 2893 if ( ! is_singular() ) { 2894 return; 2895 } 2896 2897 $page = get_query_var( 'cpage' ); 2898 2899 if ( intval( $page ) <= 1 ) { 2900 return; 2901 } 2902 2903 $prevpage = intval( $page ) - 1; 2904 2905 if ( empty( $label ) ) { 2906 $label = __( '« Older Comments' ); 2907 } 2908 2909 /** 2910 * Filters the anchor tag attributes for the previous comments page link. 2911 * 2912 * @since 2.7.0 2913 * 2914 * @param string $attributes Attributes for the anchor tag. 2915 */ 2916 return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) . '</a>'; 2917 } 2918 2919 /** 2920 * Displays the link to the previous comments page. 2921 * 2922 * @since 2.7.0 2923 * 2924 * @param string $label Optional. Label for comments link text. Default empty. 2925 */ 2926 function previous_comments_link( $label = '' ) { 2927 echo get_previous_comments_link( $label ); 2928 } 2929 2930 /** 2931 * Displays or retrieves pagination links for the comments on the current post. 2932 * 2933 * @see paginate_links() 2934 * @since 2.7.0 2935 * 2936 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 2937 * 2938 * @param string|array $args Optional args. See paginate_links(). Default empty array. 2939 * @return string|array|void Markup for comment page links or array of comment page links. 2940 */ 2941 function paginate_comments_links( $args = array() ) { 2942 global $wp_rewrite; 2943 2944 if ( ! is_singular() ) { 2945 return; 2946 } 2947 2948 $page = get_query_var( 'cpage' ); 2949 if ( ! $page ) { 2950 $page = 1; 2951 } 2952 $max_page = get_comment_pages_count(); 2953 $defaults = array( 2954 'base' => add_query_arg( 'cpage', '%#%' ), 2955 'format' => '', 2956 'total' => $max_page, 2957 'current' => $page, 2958 'echo' => true, 2959 'type' => 'plain', 2960 'add_fragment' => '#comments', 2961 ); 2962 if ( $wp_rewrite->using_permalinks() ) { 2963 $defaults['base'] = user_trailingslashit( trailingslashit( get_permalink() ) . $wp_rewrite->comments_pagination_base . '-%#%', 'commentpaged' ); 2964 } 2965 2966 $args = wp_parse_args( $args, $defaults ); 2967 $page_links = paginate_links( $args ); 2968 2969 if ( $args['echo'] && 'array' !== $args['type'] ) { 2970 echo $page_links; 2971 } else { 2972 return $page_links; 2973 } 2974 } 2975 2976 /** 2977 * Retrieves navigation to next/previous set of comments, when applicable. 2978 * 2979 * @since 4.4.0 2980 * 2981 * @param array $args { 2982 * Optional. Default comments navigation arguments. 2983 * 2984 * @type string $prev_text Anchor text to display in the previous comments link. 2985 * Default 'Older comments'. 2986 * @type string $next_text Anchor text to display in the next comments link. 2987 * Default 'Newer comments'. 2988 * @type string $screen_reader_text Screen reader text for nav element. Default 'Comments navigation'. 2989 * } 2990 * @return string Markup for comments links. 2991 */ 2992 function get_the_comments_navigation( $args = array() ) { 2993 $navigation = ''; 2994 2995 // Are there comments to navigate through? 2996 if ( get_comment_pages_count() > 1 ) { 2997 $args = wp_parse_args( 2998 $args, 2999 array( 3000 'prev_text' => __( 'Older comments' ), 3001 'next_text' => __( 'Newer comments' ), 3002 'screen_reader_text' => __( 'Comments navigation' ), 3003 ) 3004 ); 3005 3006 $prev_link = get_previous_comments_link( $args['prev_text'] ); 3007 $next_link = get_next_comments_link( $args['next_text'] ); 3008 3009 if ( $prev_link ) { 3010 $navigation .= '<div class="nav-previous">' . $prev_link . '</div>'; 3011 } 3012 3013 if ( $next_link ) { 3014 $navigation .= '<div class="nav-next">' . $next_link . '</div>'; 3015 } 3016 3017 $navigation = _navigation_markup( $navigation, 'comment-navigation', $args['screen_reader_text'] ); 3018 } 3019 3020 return $navigation; 3021 } 3022 3023 /** 3024 * Displays navigation to next/previous set of comments, when applicable. 3025 * 3026 * @since 4.4.0 3027 * 3028 * @param array $args See get_the_comments_navigation() for available arguments. Default empty array. 3029 */ 3030 function the_comments_navigation( $args = array() ) { 3031 echo get_the_comments_navigation( $args ); 3032 } 3033 3034 /** 3035 * Retrieves a paginated navigation to next/previous set of comments, when applicable. 3036 * 3037 * @since 4.4.0 3038 * 3039 * @see paginate_comments_links() 3040 * 3041 * @param array $args { 3042 * Optional. Default pagination arguments. 3043 * 3044 * @type string $screen_reader_text Screen reader text for nav element. Default 'Comments navigation'. 3045 * } 3046 * @return string Markup for pagination links. 3047 */ 3048 function get_the_comments_pagination( $args = array() ) { 3049 $navigation = ''; 3050 $args = wp_parse_args( 3051 $args, 3052 array( 3053 'screen_reader_text' => __( 'Comments navigation' ), 3054 ) 3055 ); 3056 $args['echo'] = false; 3057 3058 // Make sure we get a string back. Plain is the next best thing. 3059 if ( isset( $args['type'] ) && 'array' == $args['type'] ) { 3060 $args['type'] = 'plain'; 3061 } 3062 3063 $links = paginate_comments_links( $args ); 3064 3065 if ( $links ) { 3066 $navigation = _navigation_markup( $links, 'comments-pagination', $args['screen_reader_text'] ); 3067 } 3068 3069 return $navigation; 3070 } 3071 3072 /** 3073 * Displays a paginated navigation to next/previous set of comments, when applicable. 3074 * 3075 * @since 4.4.0 3076 * 3077 * @param array $args See get_the_comments_pagination() for available arguments. Default empty array. 3078 */ 3079 function the_comments_pagination( $args = array() ) { 3080 echo get_the_comments_pagination( $args ); 3081 } 3082 3083 /** 3084 * Retrieves the URL for the current site where the front end is accessible. 3085 * 3086 * Returns the 'home' option with the appropriate protocol. The protocol will be 'https' 3087 * if is_ssl() evaluates to true; otherwise, it will be the same as the 'home' option. 3088 * If `$scheme` is 'http' or 'https', is_ssl() is overridden. 3089 * 3090 * @since 3.0.0 3091 * 3092 * @param string $path Optional. Path relative to the home URL. Default empty. 3093 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts 3094 * 'http', 'https', 'relative', 'rest', or null. Default null. 3095 * @return string Home URL link with optional path appended. 3096 */ 3097 function home_url( $path = '', $scheme = null ) { 3098 return get_home_url( null, $path, $scheme ); 3099 } 3100 3101 /** 3102 * Retrieves the URL for a given site where the front end is accessible. 3103 * 3104 * Returns the 'home' option with the appropriate protocol. The protocol will be 'https' 3105 * if is_ssl() evaluates to true; otherwise, it will be the same as the 'home' option. 3106 * If `$scheme` is 'http' or 'https', is_ssl() is overridden. 3107 * 3108 * @since 3.0.0 3109 * 3110 * @global string $pagenow 3111 * 3112 * @param int $blog_id Optional. Site ID. Default null (current site). 3113 * @param string $path Optional. Path relative to the home URL. Default empty. 3114 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts 3115 * 'http', 'https', 'relative', 'rest', or null. Default null. 3116 * @return string Home URL link with optional path appended. 3117 */ 3118 function get_home_url( $blog_id = null, $path = '', $scheme = null ) { 3119 global $pagenow; 3120 3121 $orig_scheme = $scheme; 3122 3123 if ( empty( $blog_id ) || ! is_multisite() ) { 3124 $url = get_option( 'home' ); 3125 } else { 3126 switch_to_blog( $blog_id ); 3127 $url = get_option( 'home' ); 3128 restore_current_blog(); 3129 } 3130 3131 if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) { 3132 if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow ) { 3133 $scheme = 'https'; 3134 } else { 3135 $scheme = parse_url( $url, PHP_URL_SCHEME ); 3136 } 3137 } 3138 3139 $url = set_url_scheme( $url, $scheme ); 3140 3141 if ( $path && is_string( $path ) ) { 3142 $url .= '/' . ltrim( $path, '/' ); 3143 } 3144 3145 /** 3146 * Filters the home URL. 3147 * 3148 * @since 3.0.0 3149 * 3150 * @param string $url The complete home URL including scheme and path. 3151 * @param string $path Path relative to the home URL. Blank string if no path is specified. 3152 * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https', 3153 * 'relative', 'rest', or null. 3154 * @param int|null $blog_id Site ID, or null for the current site. 3155 */ 3156 return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id ); 3157 } 3158 3159 /** 3160 * Retrieves the URL for the current site where WordPress application files 3161 * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible. 3162 * 3163 * Returns the 'site_url' option with the appropriate protocol, 'https' if 3164 * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is 3165 * overridden. 3166 * 3167 * @since 3.0.0 3168 * 3169 * @param string $path Optional. Path relative to the site URL. Default empty. 3170 * @param string $scheme Optional. Scheme to give the site URL context. See set_url_scheme(). 3171 * @return string Site URL link with optional path appended. 3172 */ 3173 function site_url( $path = '', $scheme = null ) { 3174 return get_site_url( null, $path, $scheme ); 3175 } 3176 3177 /** 3178 * Retrieves the URL for a given site where WordPress application files 3179 * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible. 3180 * 3181 * Returns the 'site_url' option with the appropriate protocol, 'https' if 3182 * is_ssl() and 'http' otherwise. If `$scheme` is 'http' or 'https', 3183 * `is_ssl()` is overridden. 3184 * 3185 * @since 3.0.0 3186 * 3187 * @param int $blog_id Optional. Site ID. Default null (current site). 3188 * @param string $path Optional. Path relative to the site URL. Default empty. 3189 * @param string $scheme Optional. Scheme to give the site URL context. Accepts 3190 * 'http', 'https', 'login', 'login_post', 'admin', or 3191 * 'relative'. Default null. 3192 * @return string Site URL link with optional path appended. 3193 */ 3194 function get_site_url( $blog_id = null, $path = '', $scheme = null ) { 3195 if ( empty( $blog_id ) || ! is_multisite() ) { 3196 $url = get_option( 'siteurl' ); 3197 } else { 3198 switch_to_blog( $blog_id ); 3199 $url = get_option( 'siteurl' ); 3200 restore_current_blog(); 3201 } 3202 3203 $url = set_url_scheme( $url, $scheme ); 3204 3205 if ( $path && is_string( $path ) ) { 3206 $url .= '/' . ltrim( $path, '/' ); 3207 } 3208 3209 /** 3210 * Filters the site URL. 3211 * 3212 * @since 2.7.0 3213 * 3214 * @param string $url The complete site URL including scheme and path. 3215 * @param string $path Path relative to the site URL. Blank string if no path is specified. 3216 * @param string|null $scheme Scheme to give the site URL context. Accepts 'http', 'https', 'login', 3217 * 'login_post', 'admin', 'relative' or null. 3218 * @param int|null $blog_id Site ID, or null for the current site. 3219 */ 3220 return apply_filters( 'site_url', $url, $path, $scheme, $blog_id ); 3221 } 3222 3223 /** 3224 * Retrieves the URL to the admin area for the current site. 3225 * 3226 * @since 2.6.0 3227 * 3228 * @param string $path Optional path relative to the admin URL. 3229 * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 3230 * 'http' or 'https' can be passed to force those schemes. 3231 * @return string Admin URL link with optional path appended. 3232 */ 3233 function admin_url( $path = '', $scheme = 'admin' ) { 3234 return get_admin_url( null, $path, $scheme ); 3235 } 3236 3237 /** 3238 * Retrieves the URL to the admin area for a given site. 3239 * 3240 * @since 3.0.0 3241 * 3242 * @param int $blog_id Optional. Site ID. Default null (current site). 3243 * @param string $path Optional. Path relative to the admin URL. Default empty. 3244 * @param string $scheme Optional. The scheme to use. Accepts 'http' or 'https', 3245 * to force those schemes. Default 'admin', which obeys 3246 * force_ssl_admin() and is_ssl(). 3247 * @return string Admin URL link with optional path appended. 3248 */ 3249 function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) { 3250 $url = get_site_url( $blog_id, 'wp-admin/', $scheme ); 3251 3252 if ( $path && is_string( $path ) ) { 3253 $url .= ltrim( $path, '/' ); 3254 } 3255 3256 /** 3257 * Filters the admin area URL. 3258 * 3259 * @since 2.8.0 3260 * 3261 * @param string $url The complete admin area URL including scheme and path. 3262 * @param string $path Path relative to the admin area URL. Blank string if no path is specified. 3263 * @param int|null $blog_id Site ID, or null for the current site. 3264 */ 3265 return apply_filters( 'admin_url', $url, $path, $blog_id ); 3266 } 3267 3268 /** 3269 * Retrieves the URL to the includes directory. 3270 * 3271 * @since 2.6.0 3272 * 3273 * @param string $path Optional. Path relative to the includes URL. Default empty. 3274 * @param string $scheme Optional. Scheme to give the includes URL context. Accepts 3275 * 'http', 'https', or 'relative'. Default null. 3276 * @return string Includes URL link with optional path appended. 3277 */ 3278 function includes_url( $path = '', $scheme = null ) { 3279 $url = site_url( '/' . WPINC . '/', $scheme ); 3280 3281 if ( $path && is_string( $path ) ) { 3282 $url .= ltrim( $path, '/' ); 3283 } 3284 3285 /** 3286 * Filters the URL to the includes directory. 3287 * 3288 * @since 2.8.0 3289 * 3290 * @param string $url The complete URL to the includes directory including scheme and path. 3291 * @param string $path Path relative to the URL to the wp-includes directory. Blank string 3292 * if no path is specified. 3293 */ 3294 return apply_filters( 'includes_url', $url, $path ); 3295 } 3296 3297 /** 3298 * Retrieves the URL to the content directory. 3299 * 3300 * @since 2.6.0 3301 * 3302 * @param string $path Optional. Path relative to the content URL. Default empty. 3303 * @return string Content URL link with optional path appended. 3304 */ 3305 function content_url( $path = '' ) { 3306 $url = set_url_scheme( WP_CONTENT_URL ); 3307 3308 if ( $path && is_string( $path ) ) { 3309 $url .= '/' . ltrim( $path, '/' ); 3310 } 3311 3312 /** 3313 * Filters the URL to the content directory. 3314 * 3315 * @since 2.8.0 3316 * 3317 * @param string $url The complete URL to the content directory including scheme and path. 3318 * @param string $path Path relative to the URL to the content directory. Blank string 3319 * if no path is specified. 3320 */ 3321 return apply_filters( 'content_url', $url, $path ); 3322 } 3323 3324 /** 3325 * Retrieves a URL within the plugins or mu-plugins directory. 3326 * 3327 * Defaults to the plugins directory URL if no arguments are supplied. 3328 * 3329 * @since 2.6.0 3330 * 3331 * @param string $path Optional. Extra path appended to the end of the URL, including 3332 * the relative directory if $plugin is supplied. Default empty. 3333 * @param string $plugin Optional. A full path to a file inside a plugin or mu-plugin. 3334 * The URL will be relative to its directory. Default empty. 3335 * Typically this is done by passing `__FILE__` as the argument. 3336 * @return string Plugins URL link with optional paths appended. 3337 */ 3338 function plugins_url( $path = '', $plugin = '' ) { 3339 3340 $path = wp_normalize_path( $path ); 3341 $plugin = wp_normalize_path( $plugin ); 3342 $mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR ); 3343 3344 if ( ! empty( $plugin ) && 0 === strpos( $plugin, $mu_plugin_dir ) ) { 3345 $url = WPMU_PLUGIN_URL; 3346 } else { 3347 $url = WP_PLUGIN_URL; 3348 } 3349 3350 $url = set_url_scheme( $url ); 3351 3352 if ( ! empty( $plugin ) && is_string( $plugin ) ) { 3353 $folder = dirname( plugin_basename( $plugin ) ); 3354 if ( '.' != $folder ) { 3355 $url .= '/' . ltrim( $folder, '/' ); 3356 } 3357 } 3358 3359 if ( $path && is_string( $path ) ) { 3360 $url .= '/' . ltrim( $path, '/' ); 3361 } 3362 3363 /** 3364 * Filters the URL to the plugins directory. 3365 * 3366 * @since 2.8.0 3367 * 3368 * @param string $url The complete URL to the plugins directory including scheme and path. 3369 * @param string $path Path relative to the URL to the plugins directory. Blank string 3370 * if no path is specified. 3371 * @param string $plugin The plugin file path to be relative to. Blank string if no plugin 3372 * is specified. 3373 */ 3374 return apply_filters( 'plugins_url', $url, $path, $plugin ); 3375 } 3376 3377 /** 3378 * Retrieves the site URL for the current network. 3379 * 3380 * Returns the site URL with the appropriate protocol, 'https' if 3381 * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is 3382 * overridden. 3383 * 3384 * @since 3.0.0 3385 * 3386 * @see set_url_scheme() 3387 * 3388 * @param string $path Optional. Path relative to the site URL. Default empty. 3389 * @param string $scheme Optional. Scheme to give the site URL context. Accepts 3390 * 'http', 'https', or 'relative'. Default null. 3391 * @return string Site URL link with optional path appended. 3392 */ 3393 function network_site_url( $path = '', $scheme = null ) { 3394 if ( ! is_multisite() ) { 3395 return site_url( $path, $scheme ); 3396 } 3397 3398 $current_network = get_network(); 3399 3400 if ( 'relative' == $scheme ) { 3401 $url = $current_network->path; 3402 } else { 3403 $url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme ); 3404 } 3405 3406 if ( $path && is_string( $path ) ) { 3407 $url .= ltrim( $path, '/' ); 3408 } 3409 3410 /** 3411 * Filters the network site URL. 3412 * 3413 * @since 3.0.0 3414 * 3415 * @param string $url The complete network site URL including scheme and path. 3416 * @param string $path Path relative to the network site URL. Blank string if 3417 * no path is specified. 3418 * @param string|null $scheme Scheme to give the URL context. Accepts 'http', 'https', 3419 * 'relative' or null. 3420 */ 3421 return apply_filters( 'network_site_url', $url, $path, $scheme ); 3422 } 3423 3424 /** 3425 * Retrieves the home URL for the current network. 3426 * 3427 * Returns the home URL with the appropriate protocol, 'https' is_ssl() 3428 * and 'http' otherwise. If `$scheme` is 'http' or 'https', `is_ssl()` is 3429 * overridden. 3430 * 3431 * @since 3.0.0 3432 * 3433 * @param string $path Optional. Path relative to the home URL. Default empty. 3434 * @param string $scheme Optional. Scheme to give the home URL context. Accepts 3435 * 'http', 'https', or 'relative'. Default null. 3436 * @return string Home URL link with optional path appended. 3437 */ 3438 function network_home_url( $path = '', $scheme = null ) { 3439 if ( ! is_multisite() ) { 3440 return home_url( $path, $scheme ); 3441 } 3442 3443 $current_network = get_network(); 3444 $orig_scheme = $scheme; 3445 3446 if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) { 3447 $scheme = is_ssl() && ! is_admin() ? 'https' : 'http'; 3448 } 3449 3450 if ( 'relative' == $scheme ) { 3451 $url = $current_network->path; 3452 } else { 3453 $url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme ); 3454 } 3455 3456 if ( $path && is_string( $path ) ) { 3457 $url .= ltrim( $path, '/' ); 3458 } 3459 3460 /** 3461 * Filters the network home URL. 3462 * 3463 * @since 3.0.0 3464 * 3465 * @param string $url The complete network home URL including scheme and path. 3466 * @param string $path Path relative to the network home URL. Blank string 3467 * if no path is specified. 3468 * @param string|null $orig_scheme Scheme to give the URL context. Accepts 'http', 'https', 3469 * 'relative' or null. 3470 */ 3471 return apply_filters( 'network_home_url', $url, $path, $orig_scheme ); 3472 } 3473 3474 /** 3475 * Retrieves the URL to the admin area for the network. 3476 * 3477 * @since 3.0.0 3478 * 3479 * @param string $path Optional path relative to the admin URL. Default empty. 3480 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3481 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3482 * @return string Admin URL link with optional path appended. 3483 */ 3484 function network_admin_url( $path = '', $scheme = 'admin' ) { 3485 if ( ! is_multisite() ) { 3486 return admin_url( $path, $scheme ); 3487 } 3488 3489 $url = network_site_url( 'wp-admin/network/', $scheme ); 3490 3491 if ( $path && is_string( $path ) ) { 3492 $url .= ltrim( $path, '/' ); 3493 } 3494 3495 /** 3496 * Filters the network admin URL. 3497 * 3498 * @since 3.0.0 3499 * 3500 * @param string $url The complete network admin URL including scheme and path. 3501 * @param string $path Path relative to the network admin URL. Blank string if 3502 * no path is specified. 3503 */ 3504 return apply_filters( 'network_admin_url', $url, $path ); 3505 } 3506 3507 /** 3508 * Retrieves the URL to the admin area for the current user. 3509 * 3510 * @since 3.0.0 3511 * 3512 * @param string $path Optional. Path relative to the admin URL. Default empty. 3513 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3514 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3515 * @return string Admin URL link with optional path appended. 3516 */ 3517 function user_admin_url( $path = '', $scheme = 'admin' ) { 3518 $url = network_site_url( 'wp-admin/user/', $scheme ); 3519 3520 if ( $path && is_string( $path ) ) { 3521 $url .= ltrim( $path, '/' ); 3522 } 3523 3524 /** 3525 * Filters the user admin URL for the current user. 3526 * 3527 * @since 3.1.0 3528 * 3529 * @param string $url The complete URL including scheme and path. 3530 * @param string $path Path relative to the URL. Blank string if 3531 * no path is specified. 3532 */ 3533 return apply_filters( 'user_admin_url', $url, $path ); 3534 } 3535 3536 /** 3537 * Retrieves the URL to the admin area for either the current site or the network depending on context. 3538 * 3539 * @since 3.1.0 3540 * 3541 * @param string $path Optional. Path relative to the admin URL. Default empty. 3542 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3543 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3544 * @return string Admin URL link with optional path appended. 3545 */ 3546 function self_admin_url( $path = '', $scheme = 'admin' ) { 3547 if ( is_network_admin() ) { 3548 $url = network_admin_url( $path, $scheme ); 3549 } elseif ( is_user_admin() ) { 3550 $url = user_admin_url( $path, $scheme ); 3551 } else { 3552 $url = admin_url( $path, $scheme ); 3553 } 3554 3555 /** 3556 * Filters the admin URL for the current site or network depending on context. 3557 * 3558 * @since 4.9.0 3559 * 3560 * @param string $url The complete URL including scheme and path. 3561 * @param string $path Path relative to the URL. Blank string if no path is specified. 3562 * @param string $scheme The scheme to use. 3563 */ 3564 return apply_filters( 'self_admin_url', $url, $path, $scheme ); 3565 } 3566 3567 /** 3568 * Sets the scheme for a URL. 3569 * 3570 * @since 3.4.0 3571 * @since 4.4.0 The 'rest' scheme was added. 3572 * 3573 * @param string $url Absolute URL that includes a scheme 3574 * @param string|null $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login', 3575 * 'login_post', 'admin', 'relative', 'rest', 'rpc', or null. Default null. 3576 * @return string $url URL with chosen scheme. 3577 */ 3578 function set_url_scheme( $url, $scheme = null ) { 3579 $orig_scheme = $scheme; 3580 3581 if ( ! $scheme ) { 3582 $scheme = is_ssl() ? 'https' : 'http'; 3583 } elseif ( $scheme === 'admin' || $scheme === 'login' || $scheme === 'login_post' || $scheme === 'rpc' ) { 3584 $scheme = is_ssl() || force_ssl_admin() ? 'https' : 'http'; 3585 } elseif ( $scheme !== 'http' && $scheme !== 'https' && $scheme !== 'relative' ) { 3586 $scheme = is_ssl() ? 'https' : 'http'; 3587 } 3588 3589 $url = trim( $url ); 3590 if ( substr( $url, 0, 2 ) === '//' ) { 3591 $url = 'http:' . $url; 3592 } 3593 3594 if ( 'relative' == $scheme ) { 3595 $url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) ); 3596 if ( $url !== '' && $url[0] === '/' ) { 3597 $url = '/' . ltrim( $url, "/ \t\n\r\0\x0B" ); 3598 } 3599 } else { 3600 $url = preg_replace( '#^\w+://#', $scheme . '://', $url ); 3601 } 3602 3603 /** 3604 * Filters the resulting URL after setting the scheme. 3605 * 3606 * @since 3.4.0 3607 * 3608 * @param string $url The complete URL including scheme and path. 3609 * @param string $scheme Scheme applied to the URL. One of 'http', 'https', or 'relative'. 3610 * @param string|null $orig_scheme Scheme requested for the URL. One of 'http', 'https', 'login', 3611 * 'login_post', 'admin', 'relative', 'rest', 'rpc', or null. 3612 */ 3613 return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme ); 3614 } 3615 3616 /** 3617 * Retrieves the URL to the user's dashboard. 3618 * 3619 * If a user does not belong to any site, the global user dashboard is used. If the user 3620 * belongs to the current site, the dashboard for the current site is returned. If the user 3621 * cannot edit the current site, the dashboard to the user's primary site is returned. 3622 * 3623 * @since 3.1.0 3624 * 3625 * @param int $user_id Optional. User ID. Defaults to current user. 3626 * @param string $path Optional path relative to the dashboard. Use only paths known to 3627 * both site and user admins. Default empty. 3628 * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3629 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3630 * @return string Dashboard URL link with optional path appended. 3631 */ 3632 function get_dashboard_url( $user_id = 0, $path = '', $scheme = 'admin' ) { 3633 $user_id = $user_id ? (int) $user_id : get_current_user_id(); 3634 3635 $blogs = get_blogs_of_user( $user_id ); 3636 if ( is_multisite() && ! user_can( $user_id, 'manage_network' ) && empty( $blogs ) ) { 3637 $url = user_admin_url( $path, $scheme ); 3638 } elseif ( ! is_multisite() ) { 3639 $url = admin_url( $path, $scheme ); 3640 } else { 3641 $current_blog = get_current_blog_id(); 3642 if ( $current_blog && ( user_can( $user_id, 'manage_network' ) || in_array( $current_blog, array_keys( $blogs ) ) ) ) { 3643 $url = admin_url( $path, $scheme ); 3644 } else { 3645 $active = get_active_blog_for_user( $user_id ); 3646 if ( $active ) { 3647 $url = get_admin_url( $active->blog_id, $path, $scheme ); 3648 } else { 3649 $url = user_admin_url( $path, $scheme ); 3650 } 3651 } 3652 } 3653 3654 /** 3655 * Filters the dashboard URL for a user. 3656 * 3657 * @since 3.1.0 3658 * 3659 * @param string $url The complete URL including scheme and path. 3660 * @param int $user_id The user ID. 3661 * @param string $path Path relative to the URL. Blank string if no path is specified. 3662 * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', 3663 * 'login_post', 'admin', 'relative' or null. 3664 */ 3665 return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme ); 3666 } 3667 3668 /** 3669 * Retrieves the URL to the user's profile editor. 3670 * 3671 * @since 3.1.0 3672 * 3673 * @param int $user_id Optional. User ID. Defaults to current user. 3674 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3675 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3676 * @return string Dashboard URL link with optional path appended. 3677 */ 3678 function get_edit_profile_url( $user_id = 0, $scheme = 'admin' ) { 3679 $user_id = $user_id ? (int) $user_id : get_current_user_id(); 3680 3681 if ( is_user_admin() ) { 3682 $url = user_admin_url( 'profile.php', $scheme ); 3683 } elseif ( is_network_admin() ) { 3684 $url = network_admin_url( 'profile.php', $scheme ); 3685 } else { 3686 $url = get_dashboard_url( $user_id, 'profile.php', $scheme ); 3687 } 3688 3689 /** 3690 * Filters the URL for a user's profile editor. 3691 * 3692 * @since 3.1.0 3693 * 3694 * @param string $url The complete URL including scheme and path. 3695 * @param int $user_id The user ID. 3696 * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', 3697 * 'login_post', 'admin', 'relative' or null. 3698 */ 3699 return apply_filters( 'edit_profile_url', $url, $user_id, $scheme ); 3700 } 3701 3702 /** 3703 * Returns the canonical URL for a post. 3704 * 3705 * When the post is the same as the current requested page the function will handle the 3706 * pagination arguments too. 3707 * 3708 * @since 4.6.0 3709 * 3710 * @param int|WP_Post $post Optional. Post ID or object. Default is global `$post`. 3711 * @return string|false The canonical URL, or false if the post does not exist or has not 3712 * been published yet. 3713 */ 3714 function wp_get_canonical_url( $post = null ) { 3715 $post = get_post( $post ); 3716 3717 if ( ! $post ) { 3718 return false; 3719 } 3720 3721 if ( 'publish' !== $post->post_status ) { 3722 return false; 3723 } 3724 3725 $canonical_url = get_permalink( $post ); 3726 3727 // If a canonical is being generated for the current page, make sure it has pagination if needed. 3728 if ( $post->ID === get_queried_object_id() ) { 3729 $page = get_query_var( 'page', 0 ); 3730 if ( $page >= 2 ) { 3731 if ( '' == get_option( 'permalink_structure' ) ) { 3732 $canonical_url = add_query_arg( 'page', $page, $canonical_url ); 3733 } else { 3734 $canonical_url = trailingslashit( $canonical_url ) . user_trailingslashit( $page, 'single_paged' ); 3735 } 3736 } 3737 3738 $cpage = get_query_var( 'cpage', 0 ); 3739 if ( $cpage ) { 3740 $canonical_url = get_comments_pagenum_link( $cpage ); 3741 } 3742 } 3743 3744 /** 3745 * Filters the canonical URL for a post. 3746 * 3747 * @since 4.6.0 3748 * 3749 * @param string $canonical_url The post's canonical URL. 3750 * @param WP_Post $post Post object. 3751 */ 3752 return apply_filters( 'get_canonical_url', $canonical_url, $post ); 3753 } 3754 3755 /** 3756 * Outputs rel=canonical for singular queries. 3757 * 3758 * @since 2.9.0 3759 * @since 4.6.0 Adjusted to use `wp_get_canonical_url()`. 3760 */ 3761 function rel_canonical() { 3762 if ( ! is_singular() ) { 3763 return; 3764 } 3765 3766 $id = get_queried_object_id(); 3767 3768 if ( 0 === $id ) { 3769 return; 3770 } 3771 3772 $url = wp_get_canonical_url( $id ); 3773 3774 if ( ! empty( $url ) ) { 3775 echo '<link rel="canonical" href="' . esc_url( $url ) . '" />' . "\n"; 3776 } 3777 } 3778 3779 /** 3780 * Returns a shortlink for a post, page, attachment, or site. 3781 * 3782 * This function exists to provide a shortlink tag that all themes and plugins can target. 3783 * A plugin must hook in to provide the actual shortlinks. Default shortlink support is 3784 * limited to providing ?p= style links for posts. Plugins can short-circuit this function 3785 * via the {@see 'pre_get_shortlink'} filter or filter the output via the {@see 'get_shortlink'} 3786 * filter. 3787 * 3788 * @since 3.0.0 3789 * 3790 * @param int $id Optional. A post or site id. Default is 0, which means the current post or site. 3791 * @param string $context Optional. Whether the id is a 'site' id, 'post' id, or 'media' id. If 'post', 3792 * the post_type of the post is consulted. If 'query', the current query is consulted 3793 * to determine the id and context. Default 'post'. 3794 * @param bool $allow_slugs Optional. Whether to allow post slugs in the shortlink. It is up to the plugin how 3795 * and whether to honor this. Default true. 3796 * @return string A shortlink or an empty string if no shortlink exists for the requested resource or if shortlinks 3797 * are not enabled. 3798 */ 3799 function wp_get_shortlink( $id = 0, $context = 'post', $allow_slugs = true ) { 3800 /** 3801 * Filters whether to preempt generating a shortlink for the given post. 3802 * 3803 * Passing a truthy value to the filter will effectively short-circuit the 3804 * shortlink-generation process, returning that value instead. 3805 * 3806 * @since 3.0.0 3807 * 3808 * @param bool|string $return Short-circuit return value. Either false or a URL string. 3809 * @param int $id Post ID, or 0 for the current post. 3810 * @param string $context The context for the link. One of 'post' or 'query', 3811 * @param bool $allow_slugs Whether to allow post slugs in the shortlink. 3812 */ 3813 $shortlink = apply_filters( 'pre_get_shortlink', false, $id, $context, $allow_slugs ); 3814 3815 if ( false !== $shortlink ) { 3816 return $shortlink; 3817 } 3818 3819 $post_id = 0; 3820 if ( 'query' == $context && is_singular() ) { 3821 $post_id = get_queried_object_id(); 3822 $post = get_post( $post_id ); 3823 } elseif ( 'post' == $context ) { 3824 $post = get_post( $id ); 3825 if ( ! empty( $post->ID ) ) { 3826 $post_id = $post->ID; 3827 } 3828 } 3829 3830 $shortlink = ''; 3831 3832 // Return p= link for all public post types. 3833 if ( ! empty( $post_id ) ) { 3834 $post_type = get_post_type_object( $post->post_type ); 3835 3836 if ( 'page' === $post->post_type && $post->ID == get_option( 'page_on_front' ) && 'page' == get_option( 'show_on_front' ) ) { 3837 $shortlink = home_url( '/' ); 3838 } elseif ( $post_type->public ) { 3839 $shortlink = home_url( '?p=' . $post_id ); 3840 } 3841 } 3842 3843 /** 3844 * Filters the shortlink for a post. 3845 * 3846 * @since 3.0.0 3847 * 3848 * @param string $shortlink Shortlink URL. 3849 * @param int $id Post ID, or 0 for the current post. 3850 * @param string $context The context for the link. One of 'post' or 'query', 3851 * @param bool $allow_slugs Whether to allow post slugs in the shortlink. Not used by default. 3852 */ 3853 return apply_filters( 'get_shortlink', $shortlink, $id, $context, $allow_slugs ); 3854 } 3855 3856 /** 3857 * Injects rel=shortlink into the head if a shortlink is defined for the current page. 3858 * 3859 * Attached to the {@see 'wp_head'} action. 3860 * 3861 * @since 3.0.0 3862 */ 3863 function wp_shortlink_wp_head() { 3864 $shortlink = wp_get_shortlink( 0, 'query' ); 3865 3866 if ( empty( $shortlink ) ) { 3867 return; 3868 } 3869 3870 echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n"; 3871 } 3872 3873 /** 3874 * Sends a Link: rel=shortlink header if a shortlink is defined for the current page. 3875 * 3876 * Attached to the {@see 'wp'} action. 3877 * 3878 * @since 3.0.0 3879 */ 3880 function wp_shortlink_header() { 3881 if ( headers_sent() ) { 3882 return; 3883 } 3884 3885 $shortlink = wp_get_shortlink( 0, 'query' ); 3886 3887 if ( empty( $shortlink ) ) { 3888 return; 3889 } 3890 3891 header( 'Link: <' . $shortlink . '>; rel=shortlink', false ); 3892 } 3893 3894 /** 3895 * Displays the shortlink for a post. 3896 * 3897 * Must be called from inside "The Loop" 3898 * 3899 * Call like the_shortlink( __( 'Shortlinkage FTW' ) ) 3900 * 3901 * @since 3.0.0 3902 * 3903 * @param string $text Optional The link text or HTML to be displayed. Defaults to 'This is the short link.' 3904 * @param string $title Optional The tooltip for the link. Must be sanitized. Defaults to the sanitized post title. 3905 * @param string $before Optional HTML to display before the link. Default empty. 3906 * @param string $after Optional HTML to display after the link. Default empty. 3907 */ 3908 function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) { 3909 $post = get_post(); 3910 3911 if ( empty( $text ) ) { 3912 $text = __( 'This is the short link.' ); 3913 } 3914 3915 if ( empty( $title ) ) { 3916 $title = the_title_attribute( array( 'echo' => false ) ); 3917 } 3918 3919 $shortlink = wp_get_shortlink( $post->ID ); 3920 3921 if ( ! empty( $shortlink ) ) { 3922 $link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>'; 3923 3924 /** 3925 * Filters the short link anchor tag for a post. 3926 * 3927 * @since 3.0.0 3928 * 3929 * @param string $link Shortlink anchor tag. 3930 * @param string $shortlink Shortlink URL. 3931 * @param string $text Shortlink's text. 3932 * @param string $title Shortlink's title attribute. 3933 */ 3934 $link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title ); 3935 echo $before, $link, $after; 3936 } 3937 } 3938 3939 3940 /** 3941 * Retrieves the avatar URL. 3942 * 3943 * @since 4.2.0 3944 * 3945 * @param mixed $id_or_email The Gravatar to retrieve a URL for. Accepts a user_id, gravatar md5 hash, 3946 * user email, WP_User object, WP_Post object, or WP_Comment object. 3947 * @param array $args { 3948 * Optional. Arguments to return instead of the default arguments. 3949 * 3950 * @type int $size Height and width of the avatar in pixels. Default 96. 3951 * @type string $default URL for the default image or a default type. Accepts '404' (return 3952 * a 404 instead of a default image), 'retro' (8bit), 'monsterid' (monster), 3953 * 'wavatar' (cartoon face), 'indenticon' (the "quilt"), 'mystery', 'mm', 3954 * or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), or 3955 * 'gravatar_default' (the Gravatar logo). Default is the value of the 3956 * 'avatar_default' option, with a fallback of 'mystery'. 3957 * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false. 3958 * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are 3959 * judged in that order. Default is the value of the 'avatar_rating' option. 3960 * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values. 3961 * Default null. 3962 * @type array $processed_args When the function returns, the value will be the processed/sanitized $args 3963 * plus a "found_avatar" guess. Pass as a reference. Default null. 3964 * } 3965 * @return false|string The URL of the avatar we found, or false if we couldn't find an avatar. 3966 */ 3967 function get_avatar_url( $id_or_email, $args = null ) { 3968 $args = get_avatar_data( $id_or_email, $args ); 3969 return $args['url']; 3970 } 3971 3972 3973 /** 3974 * Check if this comment type allows avatars to be retrieved. 3975 * 3976 * @since 5.1.0 3977 * 3978 * @param string $comment_type Comment type to check. 3979 * @return bool Whether the comment type is allowed for retrieving avatars. 3980 */ 3981 function is_avatar_comment_type( $comment_type ) { 3982 /** 3983 * Filters the list of allowed comment types for retrieving avatars. 3984 * 3985 * @since 3.0.0 3986 * 3987 * @param array $types An array of content types. Default only contains 'comment'. 3988 */ 3989 $allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) ); 3990 3991 return in_array( $comment_type, (array) $allowed_comment_types, true ); 3992 } 3993 3994 3995 /** 3996 * Retrieves default data about the avatar. 3997 * 3998 * @since 4.2.0 3999 * 4000 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, 4001 * user email, WP_User object, WP_Post object, or WP_Comment object. 4002 * @param array $args { 4003 * Optional. Arguments to return instead of the default arguments. 4004 * 4005 * @type int $size Height and width of the avatar image file in pixels. Default 96. 4006 * @type int $height Display height of the avatar in pixels. Defaults to $size. 4007 * @type int $width Display width of the avatar in pixels. Defaults to $size. 4008 * @type string $default URL for the default image or a default type. Accepts '404' (return 4009 * a 404 instead of a default image), 'retro' (8bit), 'monsterid' (monster), 4010 * 'wavatar' (cartoon face), 'indenticon' (the "quilt"), 'mystery', 'mm', 4011 * or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), or 4012 * 'gravatar_default' (the Gravatar logo). Default is the value of the 4013 * 'avatar_default' option, with a fallback of 'mystery'. 4014 * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false. 4015 * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are 4016 * judged in that order. Default is the value of the 'avatar_rating' option. 4017 * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values. 4018 * Default null. 4019 * @type array $processed_args When the function returns, the value will be the processed/sanitized $args 4020 * plus a "found_avatar" guess. Pass as a reference. Default null. 4021 * @type string $extra_attr HTML attributes to insert in the IMG element. Is not sanitized. Default empty. 4022 * } 4023 * @return array $processed_args { 4024 * Along with the arguments passed in `$args`, this will contain a couple of extra arguments. 4025 * 4026 * @type bool $found_avatar True if we were able to find an avatar for this user, 4027 * false or not set if we couldn't. 4028 * @type string $url The URL of the avatar we found. 4029 * } 4030 */ 4031 function get_avatar_data( $id_or_email, $args = null ) { 4032 $args = wp_parse_args( 4033 $args, 4034 array( 4035 'size' => 96, 4036 'height' => null, 4037 'width' => null, 4038 'default' => get_option( 'avatar_default', 'mystery' ), 4039 'force_default' => false, 4040 'rating' => get_option( 'avatar_rating' ), 4041 'scheme' => null, 4042 'processed_args' => null, // if used, should be a reference 4043 'extra_attr' => '', 4044 ) 4045 ); 4046 4047 if ( is_numeric( $args['size'] ) ) { 4048 $args['size'] = absint( $args['size'] ); 4049 if ( ! $args['size'] ) { 4050 $args['size'] = 96; 4051 } 4052 } else { 4053 $args['size'] = 96; 4054 } 4055 4056 if ( is_numeric( $args['height'] ) ) { 4057 $args['height'] = absint( $args['height'] ); 4058 if ( ! $args['height'] ) { 4059 $args['height'] = $args['size']; 4060 } 4061 } else { 4062 $args['height'] = $args['size']; 4063 } 4064 4065 if ( is_numeric( $args['width'] ) ) { 4066 $args['width'] = absint( $args['width'] ); 4067 if ( ! $args['width'] ) { 4068 $args['width'] = $args['size']; 4069 } 4070 } else { 4071 $args['width'] = $args['size']; 4072 } 4073 4074 if ( empty( $args['default'] ) ) { 4075 $args['default'] = get_option( 'avatar_default', 'mystery' ); 4076 } 4077 4078 switch ( $args['default'] ) { 4079 case 'mm': 4080 case 'mystery': 4081 case 'mysteryman': 4082 $args['default'] = 'mm'; 4083 break; 4084 case 'gravatar_default': 4085 $args['default'] = false; 4086 break; 4087 } 4088 4089 $args['force_default'] = (bool) $args['force_default']; 4090 4091 $args['rating'] = strtolower( $args['rating'] ); 4092 4093 $args['found_avatar'] = false; 4094 4095 /** 4096 * Filters whether to retrieve the avatar URL early. 4097 * 4098 * Passing a non-null value in the 'url' member of the return array will 4099 * effectively short circuit get_avatar_data(), passing the value through 4100 * the {@see 'get_avatar_data'} filter and returning early. 4101 * 4102 * @since 4.2.0 4103 * 4104 * @param array $args Arguments passed to get_avatar_data(), after processing. 4105 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, 4106 * user email, WP_User object, WP_Post object, or WP_Comment object. 4107 */ 4108 $args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email ); 4109 4110 if ( isset( $args['url'] ) ) { 4111 /** This filter is documented in wp-includes/link-template.php */ 4112 return apply_filters( 'get_avatar_data', $args, $id_or_email ); 4113 } 4114 4115 $email_hash = ''; 4116 $user = false; 4117 $email = false; 4118 4119 if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) { 4120 $id_or_email = get_comment( $id_or_email ); 4121 } 4122 4123 // Process the user identifier. 4124 if ( is_numeric( $id_or_email ) ) { 4125 $user = get_user_by( 'id', absint( $id_or_email ) ); 4126 } elseif ( is_string( $id_or_email ) ) { 4127 if ( strpos( $id_or_email, '@md5.gravatar.com' ) ) { 4128 // md5 hash 4129 list( $email_hash ) = explode( '@', $id_or_email ); 4130 } else { 4131 // email address 4132 $email = $id_or_email; 4133 } 4134 } elseif ( $id_or_email instanceof WP_User ) { 4135 // User Object 4136 $user = $id_or_email; 4137 } elseif ( $id_or_email instanceof WP_Post ) { 4138 // Post Object 4139 $user = get_user_by( 'id', (int) $id_or_email->post_author ); 4140 } elseif ( $id_or_email instanceof WP_Comment ) { 4141 if ( ! is_avatar_comment_type( get_comment_type( $id_or_email ) ) ) { 4142 $args['url'] = false; 4143 /** This filter is documented in wp-includes/link-template.php */ 4144 return apply_filters( 'get_avatar_data', $args, $id_or_email ); 4145 } 4146 4147 if ( ! empty( $id_or_email->user_id ) ) { 4148 $user = get_user_by( 'id', (int) $id_or_email->user_id ); 4149 } 4150 if ( ( ! $user || is_wp_error( $user ) ) && ! empty( $id_or_email->comment_author_email ) ) { 4151 $email = $id_or_email->comment_author_email; 4152 } 4153 } 4154 4155 if ( ! $email_hash ) { 4156 if ( $user ) { 4157 $email = $user->user_email; 4158 } 4159 4160 if ( $email ) { 4161 $email_hash = md5( strtolower( trim( $email ) ) ); 4162 } 4163 } 4164 4165 if ( $email_hash ) { 4166 $args['found_avatar'] = true; 4167 $gravatar_server = hexdec( $email_hash[0] ) % 3; 4168 } else { 4169 $gravatar_server = rand( 0, 2 ); 4170 } 4171 4172 $url_args = array( 4173 's' => $args['size'], 4174 'd' => $args['default'], 4175 'f' => $args['force_default'] ? 'y' : false, 4176 'r' => $args['rating'], 4177 ); 4178 4179 if ( is_ssl() ) { 4180 $url = 'https://secure.gravatar.com/avatar/' . $email_hash; 4181 } else { 4182 $url = sprintf( 'http://%d.gravatar.com/avatar/%s', $gravatar_server, $email_hash ); 4183 } 4184 4185 $url = add_query_arg( 4186 rawurlencode_deep( array_filter( $url_args ) ), 4187 set_url_scheme( $url, $args['scheme'] ) 4188 ); 4189 4190 /** 4191 * Filters the avatar URL. 4192 * 4193 * @since 4.2.0 4194 * 4195 * @param string $url The URL of the avatar. 4196 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, 4197 * user email, WP_User object, WP_Post object, or WP_Comment object. 4198 * @param array $args Arguments passed to get_avatar_data(), after processing. 4199 */ 4200 $args['url'] = apply_filters( 'get_avatar_url', $url, $id_or_email, $args ); 4201 4202 /** 4203 * Filters the avatar data. 4204 * 4205 * @since 4.2.0 4206 * 4207 * @param array $args Arguments passed to get_avatar_data(), after processing. 4208 * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, 4209 * user email, WP_User object, WP_Post object, or WP_Comment object. 4210 */ 4211 return apply_filters( 'get_avatar_data', $args, $id_or_email ); 4212 } 4213 4214 /** 4215 * Retrieves the URL of a file in the theme. 4216 * 4217 * Searches in the stylesheet directory before the template directory so themes 4218 * which inherit from a parent theme can just override one file. 4219 * 4220 * @since 4.7.0 4221 * 4222 * @param string $file Optional. File to search for in the stylesheet directory. 4223 * @return string The URL of the file. 4224 */ 4225 function get_theme_file_uri( $file = '' ) { 4226 $file = ltrim( $file, '/' ); 4227 4228 if ( empty( $file ) ) { 4229 $url = get_stylesheet_directory_uri(); 4230 } elseif ( file_exists( get_stylesheet_directory() . '/' . $file ) ) { 4231 $url = get_stylesheet_directory_uri() . '/' . $file; 4232 } else { 4233 $url = get_template_directory_uri() . '/' . $file; 4234 } 4235 4236 /** 4237 * Filters the URL to a file in the theme. 4238 * 4239 * @since 4.7.0 4240 * 4241 * @param string $url The file URL. 4242 * @param string $file The requested file to search for. 4243 */ 4244 return apply_filters( 'theme_file_uri', $url, $file ); 4245 } 4246 4247 /** 4248 * Retrieves the URL of a file in the parent theme. 4249 * 4250 * @since 4.7.0 4251 * 4252 * @param string $file Optional. File to return the URL for in the template directory. 4253 * @return string The URL of the file. 4254 */ 4255 function get_parent_theme_file_uri( $file = '' ) { 4256 $file = ltrim( $file, '/' ); 4257 4258 if ( empty( $file ) ) { 4259 $url = get_template_directory_uri(); 4260 } else { 4261 $url = get_template_directory_uri() . '/' . $file; 4262 } 4263 4264 /** 4265 * Filters the URL to a file in the parent theme. 4266 * 4267 * @since 4.7.0 4268 * 4269 * @param string $url The file URL. 4270 * @param string $file The requested file to search for. 4271 */ 4272 return apply_filters( 'parent_theme_file_uri', $url, $file ); 4273 } 4274 4275 /** 4276 * Retrieves the path of a file in the theme. 4277 * 4278 * Searches in the stylesheet directory before the template directory so themes 4279 * which inherit from a parent theme can just override one file. 4280 * 4281 * @since 4.7.0 4282 * 4283 * @param string $file Optional. File to search for in the stylesheet directory. 4284 * @return string The path of the file. 4285 */ 4286 function get_theme_file_path( $file = '' ) { 4287 $file = ltrim( $file, '/' ); 4288 4289 if ( empty( $file ) ) { 4290 $path = get_stylesheet_directory(); 4291 } elseif ( file_exists( get_stylesheet_directory() . '/' . $file ) ) { 4292 $path = get_stylesheet_directory() . '/' . $file; 4293 } else { 4294 $path = get_template_directory() . '/' . $file; 4295 } 4296 4297 /** 4298 * Filters the path to a file in the theme. 4299 * 4300 * @since 4.7.0 4301 * 4302 * @param string $path The file path. 4303 * @param string $file The requested file to search for. 4304 */ 4305 return apply_filters( 'theme_file_path', $path, $file ); 4306 } 4307 4308 /** 4309 * Retrieves the path of a file in the parent theme. 4310 * 4311 * @since 4.7.0 4312 * 4313 * @param string $file Optional. File to return the path for in the template directory. 4314 * @return string The path of the file. 4315 */ 4316 function get_parent_theme_file_path( $file = '' ) { 4317 $file = ltrim( $file, '/' ); 4318 4319 if ( empty( $file ) ) { 4320 $path = get_template_directory(); 4321 } else { 4322 $path = get_template_directory() . '/' . $file; 4323 } 4324 4325 /** 4326 * Filters the path to a file in the parent theme. 4327 * 4328 * @since 4.7.0 4329 * 4330 * @param string $path The file path. 4331 * @param string $file The requested file to search for. 4332 */ 4333 return apply_filters( 'parent_theme_file_path', $path, $file ); 4334 } 4335 4336 /** 4337 * Retrieves the URL to the privacy policy page. 4338 * 4339 * @since 4.9.6 4340 * 4341 * @return string The URL to the privacy policy page. Empty string if it doesn't exist. 4342 */ 4343 function get_privacy_policy_url() { 4344 $url = ''; 4345 $policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' ); 4346 4347 if ( ! empty( $policy_page_id ) && get_post_status( $policy_page_id ) === 'publish' ) { 4348 $url = (string) get_permalink( $policy_page_id ); 4349 } 4350 4351 /** 4352 * Filters the URL of the privacy policy page. 4353 * 4354 * @since 4.9.6 4355 * 4356 * @param string $url The URL to the privacy policy page. Empty string 4357 * if it doesn't exist. 4358 * @param int $policy_page_id The ID of privacy policy page. 4359 */ 4360 return apply_filters( 'privacy_policy_url', $url, $policy_page_id ); 4361 } 4362 4363 /** 4364 * Displays the privacy policy link with formatting, when applicable. 4365 * 4366 * @since 4.9.6 4367 * 4368 * @param string $before Optional. Display before privacy policy link. Default empty. 4369 * @param string $after Optional. Display after privacy policy link. Default empty. 4370 */ 4371 function the_privacy_policy_link( $before = '', $after = '' ) { 4372 echo get_the_privacy_policy_link( $before, $after ); 4373 } 4374 4375 /** 4376 * Returns the privacy policy link with formatting, when applicable. 4377 * 4378 * @since 4.9.6 4379 * 4380 * @param string $before Optional. Display before privacy policy link. Default empty. 4381 * @param string $after Optional. Display after privacy policy link. Default empty. 4382 * 4383 * @return string Markup for the link and surrounding elements. Empty string if it 4384 * doesn't exist. 4385 */ 4386 function get_the_privacy_policy_link( $before = '', $after = '' ) { 4387 $link = ''; 4388 $privacy_policy_url = get_privacy_policy_url(); 4389 $policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' ); 4390 $page_title = ( $policy_page_id ) ? get_the_title( $policy_page_id ) : ''; 4391 4392 if ( $privacy_policy_url && $page_title ) { 4393 $link = sprintf( 4394 '<a class="privacy-policy-link" href="%s">%s</a>', 4395 esc_url( $privacy_policy_url ), 4396 esc_html( $page_title ) 4397 ); 4398 } 4399 4400 /** 4401 * Filters the privacy policy link. 4402 * 4403 * @since 4.9.6 4404 * 4405 * @param string $link The privacy policy link. Empty string if it 4406 * doesn't exist. 4407 * @param string $privacy_policy_url The URL of the privacy policy. Empty string 4408 * if it doesn't exist. 4409 */ 4410 $link = apply_filters( 'the_privacy_policy_link', $link, $privacy_policy_url ); 4411 4412 if ( $link ) { 4413 return $before . $link . $after; 4414 } 4415 4416 return ''; 4417 }
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| Generated: Tue Sep 17 01:00:03 2019 | Cross-referenced by PHPXref 0.7.1 |