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1 <?php 2 /** 3 * Option API 4 * 5 * @package WordPress 6 * @subpackage Option 7 */ 8 9 /** 10 * Retrieves an option value based on an option name. 11 * 12 * If the option does not exist or does not have a value, then the return value 13 * will be false. This is useful to check whether you need to install an option 14 * and is commonly used during installation of plugin options and to test 15 * whether upgrading is required. 16 * 17 * If the option was serialized then it will be unserialized when it is returned. 18 * 19 * Any scalar values will be returned as strings. You may coerce the return type of 20 * a given option by registering an {@see 'option_$option'} filter callback. 21 * 22 * @since 1.5.0 23 * 24 * @global wpdb $wpdb WordPress database abstraction object. 25 * 26 * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. 27 * @param mixed $default Optional. Default value to return if the option does not exist. 28 * @return mixed Value set for the option. 29 */ 30 function get_option( $option, $default = false ) { 31 global $wpdb; 32 33 $option = trim( $option ); 34 if ( empty( $option ) ) { 35 return false; 36 } 37 38 /** 39 * Filters the value of an existing option before it is retrieved. 40 * 41 * The dynamic portion of the hook name, `$option`, refers to the option name. 42 * 43 * Passing a truthy value to the filter will short-circuit retrieving 44 * the option value, returning the passed value instead. 45 * 46 * @since 1.5.0 47 * @since 4.4.0 The `$option` parameter was added. 48 * @since 4.9.0 The `$default` parameter was added. 49 * 50 * @param bool|mixed $pre_option The value to return instead of the option value. This differs from 51 * `$default`, which is used as the fallback value in the event the option 52 * doesn't exist elsewhere in get_option(). Default false (to skip past the 53 * short-circuit). 54 * @param string $option Option name. 55 * @param mixed $default The fallback value to return if the option does not exist. 56 * Default is false. 57 */ 58 $pre = apply_filters( "pre_option_{$option}", false, $option, $default ); 59 60 if ( false !== $pre ) { 61 return $pre; 62 } 63 64 if ( defined( 'WP_SETUP_CONFIG' ) ) { 65 return false; 66 } 67 68 // Distinguish between `false` as a default, and not passing one. 69 $passed_default = func_num_args() > 1; 70 71 if ( ! wp_installing() ) { 72 // prevent non-existent options from triggering multiple queries 73 $notoptions = wp_cache_get( 'notoptions', 'options' ); 74 if ( isset( $notoptions[ $option ] ) ) { 75 /** 76 * Filters the default value for an option. 77 * 78 * The dynamic portion of the hook name, `$option`, refers to the option name. 79 * 80 * @since 3.4.0 81 * @since 4.4.0 The `$option` parameter was added. 82 * @since 4.7.0 The `$passed_default` parameter was added to distinguish between a `false` value and the default parameter value. 83 * 84 * @param mixed $default The default value to return if the option does not exist 85 * in the database. 86 * @param string $option Option name. 87 * @param bool $passed_default Was `get_option()` passed a default value? 88 */ 89 return apply_filters( "default_option_{$option}", $default, $option, $passed_default ); 90 } 91 92 $alloptions = wp_load_alloptions(); 93 94 if ( isset( $alloptions[ $option ] ) ) { 95 $value = $alloptions[ $option ]; 96 } else { 97 $value = wp_cache_get( $option, 'options' ); 98 99 if ( false === $value ) { 100 $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); 101 102 // Has to be get_row instead of get_var because of funkiness with 0, false, null values 103 if ( is_object( $row ) ) { 104 $value = $row->option_value; 105 wp_cache_add( $option, $value, 'options' ); 106 } else { // option does not exist, so we must cache its non-existence 107 if ( ! is_array( $notoptions ) ) { 108 $notoptions = array(); 109 } 110 $notoptions[ $option ] = true; 111 wp_cache_set( 'notoptions', $notoptions, 'options' ); 112 113 /** This filter is documented in wp-includes/option.php */ 114 return apply_filters( "default_option_{$option}", $default, $option, $passed_default ); 115 } 116 } 117 } 118 } else { 119 $suppress = $wpdb->suppress_errors(); 120 $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); 121 $wpdb->suppress_errors( $suppress ); 122 if ( is_object( $row ) ) { 123 $value = $row->option_value; 124 } else { 125 /** This filter is documented in wp-includes/option.php */ 126 return apply_filters( "default_option_{$option}", $default, $option, $passed_default ); 127 } 128 } 129 130 // If home is not set use siteurl. 131 if ( 'home' == $option && '' == $value ) { 132 return get_option( 'siteurl' ); 133 } 134 135 if ( in_array( $option, array( 'siteurl', 'home', 'category_base', 'tag_base' ) ) ) { 136 $value = untrailingslashit( $value ); 137 } 138 139 /** 140 * Filters the value of an existing option. 141 * 142 * The dynamic portion of the hook name, `$option`, refers to the option name. 143 * 144 * @since 1.5.0 As 'option_' . $setting 145 * @since 3.0.0 146 * @since 4.4.0 The `$option` parameter was added. 147 * 148 * @param mixed $value Value of the option. If stored serialized, it will be 149 * unserialized prior to being returned. 150 * @param string $option Option name. 151 */ 152 return apply_filters( "option_{$option}", maybe_unserialize( $value ), $option ); 153 } 154 155 /** 156 * Protect WordPress special option from being modified. 157 * 158 * Will die if $option is in protected list. Protected options are 'alloptions' 159 * and 'notoptions' options. 160 * 161 * @since 2.2.0 162 * 163 * @param string $option Option name. 164 */ 165 function wp_protect_special_option( $option ) { 166 if ( 'alloptions' === $option || 'notoptions' === $option ) { 167 wp_die( 168 sprintf( 169 /* translators: %s: Option name. */ 170 __( '%s is a protected WP option and may not be modified' ), 171 esc_html( $option ) 172 ) 173 ); 174 } 175 } 176 177 /** 178 * Print option value after sanitizing for forms. 179 * 180 * @since 1.5.0 181 * 182 * @param string $option Option name. 183 */ 184 function form_option( $option ) { 185 echo esc_attr( get_option( $option ) ); 186 } 187 188 /** 189 * Loads and caches all autoloaded options, if available or all options. 190 * 191 * @since 2.2.0 192 * @since 5.3.1 The `$force_cache` parameter was added. 193 * 194 * @global wpdb $wpdb WordPress database abstraction object. 195 * 196 * @param bool $force_cache Optional. Whether to force an update of the local cache 197 * from the persistent cache. Default false. 198 * @return array List of all options. 199 */ 200 function wp_load_alloptions( $force_cache = false ) { 201 global $wpdb; 202 203 if ( ! wp_installing() || ! is_multisite() ) { 204 $alloptions = wp_cache_get( 'alloptions', 'options', $force_cache ); 205 } else { 206 $alloptions = false; 207 } 208 209 if ( ! $alloptions ) { 210 $suppress = $wpdb->suppress_errors(); 211 $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ); 212 if ( ! $alloptions_db ) { 213 $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" ); 214 } 215 $wpdb->suppress_errors( $suppress ); 216 217 $alloptions = array(); 218 foreach ( (array) $alloptions_db as $o ) { 219 $alloptions[ $o->option_name ] = $o->option_value; 220 } 221 222 if ( ! wp_installing() || ! is_multisite() ) { 223 /** 224 * Filters all options before caching them. 225 * 226 * @since 4.9.0 227 * 228 * @param array $alloptions Array with all options. 229 */ 230 $alloptions = apply_filters( 'pre_cache_alloptions', $alloptions ); 231 wp_cache_add( 'alloptions', $alloptions, 'options' ); 232 } 233 } 234 235 /** 236 * Filters all options after retrieving them. 237 * 238 * @since 4.9.0 239 * 240 * @param array $alloptions Array with all options. 241 */ 242 return apply_filters( 'alloptions', $alloptions ); 243 } 244 245 /** 246 * Loads and caches certain often requested site options if is_multisite() and a persistent cache is not being used. 247 * 248 * @since 3.0.0 249 * 250 * @global wpdb $wpdb WordPress database abstraction object. 251 * 252 * @param int $network_id Optional site ID for which to query the options. Defaults to the current site. 253 */ 254 function wp_load_core_site_options( $network_id = null ) { 255 global $wpdb; 256 257 if ( ! is_multisite() || wp_using_ext_object_cache() || wp_installing() ) { 258 return; 259 } 260 261 if ( empty( $network_id ) ) { 262 $network_id = get_current_network_id(); 263 } 264 265 $core_options = array( 'site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled', 'ms_files_rewriting' ); 266 267 $core_options_in = "'" . implode( "', '", $core_options ) . "'"; 268 $options = $wpdb->get_results( $wpdb->prepare( "SELECT meta_key, meta_value FROM $wpdb->sitemeta WHERE meta_key IN ($core_options_in) AND site_id = %d", $network_id ) ); 269 270 foreach ( $options as $option ) { 271 $key = $option->meta_key; 272 $cache_key = "{$network_id}:$key"; 273 $option->meta_value = maybe_unserialize( $option->meta_value ); 274 275 wp_cache_set( $cache_key, $option->meta_value, 'site-options' ); 276 } 277 } 278 279 /** 280 * Update the value of an option that was already added. 281 * 282 * You do not need to serialize values. If the value needs to be serialized, then 283 * it will be serialized before it is inserted into the database. Remember, 284 * resources can not be serialized or added as an option. 285 * 286 * If the option does not exist, then the option will be added with the option value, 287 * with an `$autoload` value of 'yes'. 288 289 * This function is designed to work with or without a logged-in user. In terms of security, 290 * plugin developers should check the current user's capabilities before updating any options. 291 * 292 * @since 1.0.0 293 * @since 4.2.0 The `$autoload` parameter was added. 294 * 295 * @global wpdb $wpdb WordPress database abstraction object. 296 * 297 * @param string $option Option name. Expected to not be SQL-escaped. 298 * @param mixed $value Option value. Must be serializable if non-scalar. Expected to not be SQL-escaped. 299 * @param string|bool $autoload Optional. Whether to load the option when WordPress starts up. For existing options, 300 * `$autoload` can only be updated using `update_option()` if `$value` is also changed. 301 * Accepts 'yes'|true to enable or 'no'|false to disable. For non-existent options, 302 * the default value is 'yes'. Default null. 303 * @return bool False if value was not updated and true if value was updated. 304 */ 305 function update_option( $option, $value, $autoload = null ) { 306 global $wpdb; 307 308 $option = trim( $option ); 309 if ( empty( $option ) ) { 310 return false; 311 } 312 313 wp_protect_special_option( $option ); 314 315 if ( is_object( $value ) ) { 316 $value = clone $value; 317 } 318 319 $value = sanitize_option( $option, $value ); 320 $old_value = get_option( $option ); 321 322 /** 323 * Filters a specific option before its value is (maybe) serialized and updated. 324 * 325 * The dynamic portion of the hook name, `$option`, refers to the option name. 326 * 327 * @since 2.6.0 328 * @since 4.4.0 The `$option` parameter was added. 329 * 330 * @param mixed $value The new, unserialized option value. 331 * @param mixed $old_value The old option value. 332 * @param string $option Option name. 333 */ 334 $value = apply_filters( "pre_update_option_{$option}", $value, $old_value, $option ); 335 336 /** 337 * Filters an option before its value is (maybe) serialized and updated. 338 * 339 * @since 3.9.0 340 * 341 * @param mixed $value The new, unserialized option value. 342 * @param string $option Name of the option. 343 * @param mixed $old_value The old option value. 344 */ 345 $value = apply_filters( 'pre_update_option', $value, $option, $old_value ); 346 347 /* 348 * If the new and old values are the same, no need to update. 349 * 350 * Unserialized values will be adequate in most cases. If the unserialized 351 * data differs, the (maybe) serialized data is checked to avoid 352 * unnecessary database calls for otherwise identical object instances. 353 * 354 * See https://core.trac.wordpress.org/ticket/38903 355 */ 356 if ( $value === $old_value || maybe_serialize( $value ) === maybe_serialize( $old_value ) ) { 357 return false; 358 } 359 360 /** This filter is documented in wp-includes/option.php */ 361 if ( apply_filters( "default_option_{$option}", false, $option, false ) === $old_value ) { 362 // Default setting for new options is 'yes'. 363 if ( null === $autoload ) { 364 $autoload = 'yes'; 365 } 366 367 return add_option( $option, $value, '', $autoload ); 368 } 369 370 $serialized_value = maybe_serialize( $value ); 371 372 /** 373 * Fires immediately before an option value is updated. 374 * 375 * @since 2.9.0 376 * 377 * @param string $option Name of the option to update. 378 * @param mixed $old_value The old option value. 379 * @param mixed $value The new option value. 380 */ 381 do_action( 'update_option', $option, $old_value, $value ); 382 383 $update_args = array( 384 'option_value' => $serialized_value, 385 ); 386 387 if ( null !== $autoload ) { 388 $update_args['autoload'] = ( 'no' === $autoload || false === $autoload ) ? 'no' : 'yes'; 389 } 390 391 $result = $wpdb->update( $wpdb->options, $update_args, array( 'option_name' => $option ) ); 392 if ( ! $result ) { 393 return false; 394 } 395 396 $notoptions = wp_cache_get( 'notoptions', 'options' ); 397 if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { 398 unset( $notoptions[ $option ] ); 399 wp_cache_set( 'notoptions', $notoptions, 'options' ); 400 } 401 402 if ( ! wp_installing() ) { 403 $alloptions = wp_load_alloptions( true ); 404 if ( isset( $alloptions[ $option ] ) ) { 405 $alloptions[ $option ] = $serialized_value; 406 wp_cache_set( 'alloptions', $alloptions, 'options' ); 407 } else { 408 wp_cache_set( $option, $serialized_value, 'options' ); 409 } 410 } 411 412 /** 413 * Fires after the value of a specific option has been successfully updated. 414 * 415 * The dynamic portion of the hook name, `$option`, refers to the option name. 416 * 417 * @since 2.0.1 418 * @since 4.4.0 The `$option` parameter was added. 419 * 420 * @param mixed $old_value The old option value. 421 * @param mixed $value The new option value. 422 * @param string $option Option name. 423 */ 424 do_action( "update_option_{$option}", $old_value, $value, $option ); 425 426 /** 427 * Fires after the value of an option has been successfully updated. 428 * 429 * @since 2.9.0 430 * 431 * @param string $option Name of the updated option. 432 * @param mixed $old_value The old option value. 433 * @param mixed $value The new option value. 434 */ 435 do_action( 'updated_option', $option, $old_value, $value ); 436 return true; 437 } 438 439 /** 440 * Add a new option. 441 * 442 * You do not need to serialize values. If the value needs to be serialized, then 443 * it will be serialized before it is inserted into the database. Remember, 444 * resources can not be serialized or added as an option. 445 * 446 * You can create options without values and then update the values later. 447 * Existing options will not be updated and checks are performed to ensure that you 448 * aren't adding a protected WordPress option. Care should be taken to not name 449 * options the same as the ones which are protected. 450 * 451 * @since 1.0.0 452 * 453 * @global wpdb $wpdb WordPress database abstraction object. 454 * 455 * @param string $option Name of option to add. Expected to not be SQL-escaped. 456 * @param mixed $value Optional. Option value. Must be serializable if non-scalar. Expected to not be SQL-escaped. 457 * @param string $deprecated Optional. Description. Not used anymore. 458 * @param string|bool $autoload Optional. Whether to load the option when WordPress starts up. 459 * Default is enabled. Accepts 'no' to disable for legacy reasons. 460 * @return bool False if option was not added and true if option was added. 461 */ 462 function add_option( $option, $value = '', $deprecated = '', $autoload = 'yes' ) { 463 global $wpdb; 464 465 if ( ! empty( $deprecated ) ) { 466 _deprecated_argument( __FUNCTION__, '2.3.0' ); 467 } 468 469 $option = trim( $option ); 470 if ( empty( $option ) ) { 471 return false; 472 } 473 474 wp_protect_special_option( $option ); 475 476 if ( is_object( $value ) ) { 477 $value = clone $value; 478 } 479 480 $value = sanitize_option( $option, $value ); 481 482 // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query 483 $notoptions = wp_cache_get( 'notoptions', 'options' ); 484 if ( ! is_array( $notoptions ) || ! isset( $notoptions[ $option ] ) ) { 485 /** This filter is documented in wp-includes/option.php */ 486 if ( apply_filters( "default_option_{$option}", false, $option, false ) !== get_option( $option ) ) { 487 return false; 488 } 489 } 490 491 $serialized_value = maybe_serialize( $value ); 492 $autoload = ( 'no' === $autoload || false === $autoload ) ? 'no' : 'yes'; 493 494 /** 495 * Fires before an option is added. 496 * 497 * @since 2.9.0 498 * 499 * @param string $option Name of the option to add. 500 * @param mixed $value Value of the option. 501 */ 502 do_action( 'add_option', $option, $value ); 503 504 $result = $wpdb->query( $wpdb->prepare( "INSERT INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, %s) ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`)", $option, $serialized_value, $autoload ) ); 505 if ( ! $result ) { 506 return false; 507 } 508 509 if ( ! wp_installing() ) { 510 if ( 'yes' == $autoload ) { 511 $alloptions = wp_load_alloptions( true ); 512 $alloptions[ $option ] = $serialized_value; 513 wp_cache_set( 'alloptions', $alloptions, 'options' ); 514 } else { 515 wp_cache_set( $option, $serialized_value, 'options' ); 516 } 517 } 518 519 // This option exists now 520 $notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh 521 if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { 522 unset( $notoptions[ $option ] ); 523 wp_cache_set( 'notoptions', $notoptions, 'options' ); 524 } 525 526 /** 527 * Fires after a specific option has been added. 528 * 529 * The dynamic portion of the hook name, `$option`, refers to the option name. 530 * 531 * @since 2.5.0 As "add_option_{$name}" 532 * @since 3.0.0 533 * 534 * @param string $option Name of the option to add. 535 * @param mixed $value Value of the option. 536 */ 537 do_action( "add_option_{$option}", $option, $value ); 538 539 /** 540 * Fires after an option has been added. 541 * 542 * @since 2.9.0 543 * 544 * @param string $option Name of the added option. 545 * @param mixed $value Value of the option. 546 */ 547 do_action( 'added_option', $option, $value ); 548 return true; 549 } 550 551 /** 552 * Removes option by name. Prevents removal of protected WordPress options. 553 * 554 * @since 1.2.0 555 * 556 * @global wpdb $wpdb WordPress database abstraction object. 557 * 558 * @param string $option Name of option to remove. Expected to not be SQL-escaped. 559 * @return bool True, if option is successfully deleted. False on failure. 560 */ 561 function delete_option( $option ) { 562 global $wpdb; 563 564 $option = trim( $option ); 565 if ( empty( $option ) ) { 566 return false; 567 } 568 569 wp_protect_special_option( $option ); 570 571 // Get the ID, if no ID then return 572 $row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) ); 573 if ( is_null( $row ) ) { 574 return false; 575 } 576 577 /** 578 * Fires immediately before an option is deleted. 579 * 580 * @since 2.9.0 581 * 582 * @param string $option Name of the option to delete. 583 */ 584 do_action( 'delete_option', $option ); 585 586 $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) ); 587 if ( ! wp_installing() ) { 588 if ( 'yes' == $row->autoload ) { 589 $alloptions = wp_load_alloptions( true ); 590 if ( is_array( $alloptions ) && isset( $alloptions[ $option ] ) ) { 591 unset( $alloptions[ $option ] ); 592 wp_cache_set( 'alloptions', $alloptions, 'options' ); 593 } 594 } else { 595 wp_cache_delete( $option, 'options' ); 596 } 597 } 598 if ( $result ) { 599 600 /** 601 * Fires after a specific option has been deleted. 602 * 603 * The dynamic portion of the hook name, `$option`, refers to the option name. 604 * 605 * @since 3.0.0 606 * 607 * @param string $option Name of the deleted option. 608 */ 609 do_action( "delete_option_{$option}", $option ); 610 611 /** 612 * Fires after an option has been deleted. 613 * 614 * @since 2.9.0 615 * 616 * @param string $option Name of the deleted option. 617 */ 618 do_action( 'deleted_option', $option ); 619 return true; 620 } 621 return false; 622 } 623 624 /** 625 * Delete a transient. 626 * 627 * @since 2.8.0 628 * 629 * @param string $transient Transient name. Expected to not be SQL-escaped. 630 * @return bool true if successful, false otherwise 631 */ 632 function delete_transient( $transient ) { 633 634 /** 635 * Fires immediately before a specific transient is deleted. 636 * 637 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 638 * 639 * @since 3.0.0 640 * 641 * @param string $transient Transient name. 642 */ 643 do_action( "delete_transient_{$transient}", $transient ); 644 645 if ( wp_using_ext_object_cache() ) { 646 $result = wp_cache_delete( $transient, 'transient' ); 647 } else { 648 $option_timeout = '_transient_timeout_' . $transient; 649 $option = '_transient_' . $transient; 650 $result = delete_option( $option ); 651 if ( $result ) { 652 delete_option( $option_timeout ); 653 } 654 } 655 656 if ( $result ) { 657 658 /** 659 * Fires after a transient is deleted. 660 * 661 * @since 3.0.0 662 * 663 * @param string $transient Deleted transient name. 664 */ 665 do_action( 'deleted_transient', $transient ); 666 } 667 668 return $result; 669 } 670 671 /** 672 * Get the value of a transient. 673 * 674 * If the transient does not exist, does not have a value, or has expired, 675 * then the return value will be false. 676 * 677 * @since 2.8.0 678 * 679 * @param string $transient Transient name. Expected to not be SQL-escaped. 680 * @return mixed Value of transient. 681 */ 682 function get_transient( $transient ) { 683 684 /** 685 * Filters the value of an existing transient. 686 * 687 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 688 * 689 * Passing a truthy value to the filter will effectively short-circuit retrieval 690 * of the transient, returning the passed value instead. 691 * 692 * @since 2.8.0 693 * @since 4.4.0 The `$transient` parameter was added 694 * 695 * @param mixed $pre_transient The default value to return if the transient does not exist. 696 * Any value other than false will short-circuit the retrieval 697 * of the transient, and return the returned value. 698 * @param string $transient Transient name. 699 */ 700 $pre = apply_filters( "pre_transient_{$transient}", false, $transient ); 701 if ( false !== $pre ) { 702 return $pre; 703 } 704 705 if ( wp_using_ext_object_cache() ) { 706 $value = wp_cache_get( $transient, 'transient' ); 707 } else { 708 $transient_option = '_transient_' . $transient; 709 if ( ! wp_installing() ) { 710 // If option is not in alloptions, it is not autoloaded and thus has a timeout 711 $alloptions = wp_load_alloptions(); 712 if ( ! isset( $alloptions[ $transient_option ] ) ) { 713 $transient_timeout = '_transient_timeout_' . $transient; 714 $timeout = get_option( $transient_timeout ); 715 if ( false !== $timeout && $timeout < time() ) { 716 delete_option( $transient_option ); 717 delete_option( $transient_timeout ); 718 $value = false; 719 } 720 } 721 } 722 723 if ( ! isset( $value ) ) { 724 $value = get_option( $transient_option ); 725 } 726 } 727 728 /** 729 * Filters an existing transient's value. 730 * 731 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 732 * 733 * @since 2.8.0 734 * @since 4.4.0 The `$transient` parameter was added 735 * 736 * @param mixed $value Value of transient. 737 * @param string $transient Transient name. 738 */ 739 return apply_filters( "transient_{$transient}", $value, $transient ); 740 } 741 742 /** 743 * Set/update the value of a transient. 744 * 745 * You do not need to serialize values. If the value needs to be serialized, then 746 * it will be serialized before it is set. 747 * 748 * @since 2.8.0 749 * 750 * @param string $transient Transient name. Expected to not be SQL-escaped. Must be 751 * 172 characters or fewer in length. 752 * @param mixed $value Transient value. Must be serializable if non-scalar. 753 * Expected to not be SQL-escaped. 754 * @param int $expiration Optional. Time until expiration in seconds. Default 0 (no expiration). 755 * @return bool False if value was not set and true if value was set. 756 */ 757 function set_transient( $transient, $value, $expiration = 0 ) { 758 759 $expiration = (int) $expiration; 760 761 /** 762 * Filters a specific transient before its value is set. 763 * 764 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 765 * 766 * @since 3.0.0 767 * @since 4.2.0 The `$expiration` parameter was added. 768 * @since 4.4.0 The `$transient` parameter was added. 769 * 770 * @param mixed $value New value of transient. 771 * @param int $expiration Time until expiration in seconds. 772 * @param string $transient Transient name. 773 */ 774 $value = apply_filters( "pre_set_transient_{$transient}", $value, $expiration, $transient ); 775 776 /** 777 * Filters the expiration for a transient before its value is set. 778 * 779 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 780 * 781 * @since 4.4.0 782 * 783 * @param int $expiration Time until expiration in seconds. Use 0 for no expiration. 784 * @param mixed $value New value of transient. 785 * @param string $transient Transient name. 786 */ 787 $expiration = apply_filters( "expiration_of_transient_{$transient}", $expiration, $value, $transient ); 788 789 if ( wp_using_ext_object_cache() ) { 790 $result = wp_cache_set( $transient, $value, 'transient', $expiration ); 791 } else { 792 $transient_timeout = '_transient_timeout_' . $transient; 793 $transient_option = '_transient_' . $transient; 794 if ( false === get_option( $transient_option ) ) { 795 $autoload = 'yes'; 796 if ( $expiration ) { 797 $autoload = 'no'; 798 add_option( $transient_timeout, time() + $expiration, '', 'no' ); 799 } 800 $result = add_option( $transient_option, $value, '', $autoload ); 801 } else { 802 // If expiration is requested, but the transient has no timeout option, 803 // delete, then re-create transient rather than update. 804 $update = true; 805 if ( $expiration ) { 806 if ( false === get_option( $transient_timeout ) ) { 807 delete_option( $transient_option ); 808 add_option( $transient_timeout, time() + $expiration, '', 'no' ); 809 $result = add_option( $transient_option, $value, '', 'no' ); 810 $update = false; 811 } else { 812 update_option( $transient_timeout, time() + $expiration ); 813 } 814 } 815 if ( $update ) { 816 $result = update_option( $transient_option, $value ); 817 } 818 } 819 } 820 821 if ( $result ) { 822 823 /** 824 * Fires after the value for a specific transient has been set. 825 * 826 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 827 * 828 * @since 3.0.0 829 * @since 3.6.0 The `$value` and `$expiration` parameters were added. 830 * @since 4.4.0 The `$transient` parameter was added. 831 * 832 * @param mixed $value Transient value. 833 * @param int $expiration Time until expiration in seconds. 834 * @param string $transient The name of the transient. 835 */ 836 do_action( "set_transient_{$transient}", $value, $expiration, $transient ); 837 838 /** 839 * Fires after the value for a transient has been set. 840 * 841 * @since 3.0.0 842 * @since 3.6.0 The `$value` and `$expiration` parameters were added. 843 * 844 * @param string $transient The name of the transient. 845 * @param mixed $value Transient value. 846 * @param int $expiration Time until expiration in seconds. 847 */ 848 do_action( 'setted_transient', $transient, $value, $expiration ); 849 } 850 return $result; 851 } 852 853 /** 854 * Deletes all expired transients. 855 * 856 * The multi-table delete syntax is used to delete the transient record 857 * from table a, and the corresponding transient_timeout record from table b. 858 * 859 * @since 4.9.0 860 * 861 * @param bool $force_db Optional. Force cleanup to run against the database even when an external object cache is used. 862 */ 863 function delete_expired_transients( $force_db = false ) { 864 global $wpdb; 865 866 if ( ! $force_db && wp_using_ext_object_cache() ) { 867 return; 868 } 869 870 $wpdb->query( 871 $wpdb->prepare( 872 "DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b 873 WHERE a.option_name LIKE %s 874 AND a.option_name NOT LIKE %s 875 AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) ) 876 AND b.option_value < %d", 877 $wpdb->esc_like( '_transient_' ) . '%', 878 $wpdb->esc_like( '_transient_timeout_' ) . '%', 879 time() 880 ) 881 ); 882 883 if ( ! is_multisite() ) { 884 // non-Multisite stores site transients in the options table. 885 $wpdb->query( 886 $wpdb->prepare( 887 "DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b 888 WHERE a.option_name LIKE %s 889 AND a.option_name NOT LIKE %s 890 AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) ) 891 AND b.option_value < %d", 892 $wpdb->esc_like( '_site_transient_' ) . '%', 893 $wpdb->esc_like( '_site_transient_timeout_' ) . '%', 894 time() 895 ) 896 ); 897 } elseif ( is_multisite() && is_main_site() && is_main_network() ) { 898 // Multisite stores site transients in the sitemeta table. 899 $wpdb->query( 900 $wpdb->prepare( 901 "DELETE a, b FROM {$wpdb->sitemeta} a, {$wpdb->sitemeta} b 902 WHERE a.meta_key LIKE %s 903 AND a.meta_key NOT LIKE %s 904 AND b.meta_key = CONCAT( '_site_transient_timeout_', SUBSTRING( a.meta_key, 17 ) ) 905 AND b.meta_value < %d", 906 $wpdb->esc_like( '_site_transient_' ) . '%', 907 $wpdb->esc_like( '_site_transient_timeout_' ) . '%', 908 time() 909 ) 910 ); 911 } 912 } 913 914 /** 915 * Saves and restores user interface settings stored in a cookie. 916 * 917 * Checks if the current user-settings cookie is updated and stores it. When no 918 * cookie exists (different browser used), adds the last saved cookie restoring 919 * the settings. 920 * 921 * @since 2.7.0 922 */ 923 function wp_user_settings() { 924 925 if ( ! is_admin() || wp_doing_ajax() ) { 926 return; 927 } 928 929 $user_id = get_current_user_id(); 930 if ( ! $user_id ) { 931 return; 932 } 933 934 if ( ! is_user_member_of_blog() ) { 935 return; 936 } 937 938 $settings = (string) get_user_option( 'user-settings', $user_id ); 939 940 if ( isset( $_COOKIE[ 'wp-settings-' . $user_id ] ) ) { 941 $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE[ 'wp-settings-' . $user_id ] ); 942 943 // No change or both empty 944 if ( $cookie == $settings ) { 945 return; 946 } 947 948 $last_saved = (int) get_user_option( 'user-settings-time', $user_id ); 949 $current = isset( $_COOKIE[ 'wp-settings-time-' . $user_id ] ) ? preg_replace( '/[^0-9]/', '', $_COOKIE[ 'wp-settings-time-' . $user_id ] ) : 0; 950 951 // The cookie is newer than the saved value. Update the user_option and leave the cookie as-is 952 if ( $current > $last_saved ) { 953 update_user_option( $user_id, 'user-settings', $cookie, false ); 954 update_user_option( $user_id, 'user-settings-time', time() - 5, false ); 955 return; 956 } 957 } 958 959 // The cookie is not set in the current browser or the saved value is newer. 960 $secure = ( 'https' === parse_url( admin_url(), PHP_URL_SCHEME ) ); 961 setcookie( 'wp-settings-' . $user_id, $settings, time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure ); 962 setcookie( 'wp-settings-time-' . $user_id, time(), time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure ); 963 $_COOKIE[ 'wp-settings-' . $user_id ] = $settings; 964 } 965 966 /** 967 * Retrieve user interface setting value based on setting name. 968 * 969 * @since 2.7.0 970 * 971 * @param string $name The name of the setting. 972 * @param string $default Optional default value to return when $name is not set. 973 * @return mixed the last saved user setting or the default value/false if it doesn't exist. 974 */ 975 function get_user_setting( $name, $default = false ) { 976 $all_user_settings = get_all_user_settings(); 977 978 return isset( $all_user_settings[ $name ] ) ? $all_user_settings[ $name ] : $default; 979 } 980 981 /** 982 * Add or update user interface setting. 983 * 984 * Both $name and $value can contain only ASCII letters, numbers, hyphens, and underscores. 985 * 986 * This function has to be used before any output has started as it calls setcookie(). 987 * 988 * @since 2.8.0 989 * 990 * @param string $name The name of the setting. 991 * @param string $value The value for the setting. 992 * @return bool|null True if set successfully, false if not. Null if the current user can't be established. 993 */ 994 function set_user_setting( $name, $value ) { 995 if ( headers_sent() ) { 996 return false; 997 } 998 999 $all_user_settings = get_all_user_settings(); 1000 $all_user_settings[ $name ] = $value; 1001 1002 return wp_set_all_user_settings( $all_user_settings ); 1003 } 1004 1005 /** 1006 * Delete user interface settings. 1007 * 1008 * Deleting settings would reset them to the defaults. 1009 * 1010 * This function has to be used before any output has started as it calls setcookie(). 1011 * 1012 * @since 2.7.0 1013 * 1014 * @param string $names The name or array of names of the setting to be deleted. 1015 * @return bool|null True if deleted successfully, false if not. Null if the current user can't be established. 1016 */ 1017 function delete_user_setting( $names ) { 1018 if ( headers_sent() ) { 1019 return false; 1020 } 1021 1022 $all_user_settings = get_all_user_settings(); 1023 $names = (array) $names; 1024 $deleted = false; 1025 1026 foreach ( $names as $name ) { 1027 if ( isset( $all_user_settings[ $name ] ) ) { 1028 unset( $all_user_settings[ $name ] ); 1029 $deleted = true; 1030 } 1031 } 1032 1033 if ( $deleted ) { 1034 return wp_set_all_user_settings( $all_user_settings ); 1035 } 1036 1037 return false; 1038 } 1039 1040 /** 1041 * Retrieve all user interface settings. 1042 * 1043 * @since 2.7.0 1044 * 1045 * @global array $_updated_user_settings 1046 * 1047 * @return array the last saved user settings or empty array. 1048 */ 1049 function get_all_user_settings() { 1050 global $_updated_user_settings; 1051 1052 $user_id = get_current_user_id(); 1053 if ( ! $user_id ) { 1054 return array(); 1055 } 1056 1057 if ( isset( $_updated_user_settings ) && is_array( $_updated_user_settings ) ) { 1058 return $_updated_user_settings; 1059 } 1060 1061 $user_settings = array(); 1062 1063 if ( isset( $_COOKIE[ 'wp-settings-' . $user_id ] ) ) { 1064 $cookie = preg_replace( '/[^A-Za-z0-9=&_-]/', '', $_COOKIE[ 'wp-settings-' . $user_id ] ); 1065 1066 if ( strpos( $cookie, '=' ) ) { // '=' cannot be 1st char 1067 parse_str( $cookie, $user_settings ); 1068 } 1069 } else { 1070 $option = get_user_option( 'user-settings', $user_id ); 1071 1072 if ( $option && is_string( $option ) ) { 1073 parse_str( $option, $user_settings ); 1074 } 1075 } 1076 1077 $_updated_user_settings = $user_settings; 1078 return $user_settings; 1079 } 1080 1081 /** 1082 * Private. Set all user interface settings. 1083 * 1084 * @since 2.8.0 1085 * @access private 1086 * 1087 * @global array $_updated_user_settings 1088 * 1089 * @param array $user_settings User settings. 1090 * @return bool|null False if the current user can't be found, null if the current 1091 * user is not a super admin or a member of the site, otherwise true. 1092 */ 1093 function wp_set_all_user_settings( $user_settings ) { 1094 global $_updated_user_settings; 1095 1096 $user_id = get_current_user_id(); 1097 if ( ! $user_id ) { 1098 return false; 1099 } 1100 1101 if ( ! is_user_member_of_blog() ) { 1102 return; 1103 } 1104 1105 $settings = ''; 1106 foreach ( $user_settings as $name => $value ) { 1107 $_name = preg_replace( '/[^A-Za-z0-9_-]+/', '', $name ); 1108 $_value = preg_replace( '/[^A-Za-z0-9_-]+/', '', $value ); 1109 1110 if ( ! empty( $_name ) ) { 1111 $settings .= $_name . '=' . $_value . '&'; 1112 } 1113 } 1114 1115 $settings = rtrim( $settings, '&' ); 1116 parse_str( $settings, $_updated_user_settings ); 1117 1118 update_user_option( $user_id, 'user-settings', $settings, false ); 1119 update_user_option( $user_id, 'user-settings-time', time(), false ); 1120 1121 return true; 1122 } 1123 1124 /** 1125 * Delete the user settings of the current user. 1126 * 1127 * @since 2.7.0 1128 */ 1129 function delete_all_user_settings() { 1130 $user_id = get_current_user_id(); 1131 if ( ! $user_id ) { 1132 return; 1133 } 1134 1135 update_user_option( $user_id, 'user-settings', '', false ); 1136 setcookie( 'wp-settings-' . $user_id, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH ); 1137 } 1138 1139 /** 1140 * Retrieve an option value for the current network based on name of option. 1141 * 1142 * @since 2.8.0 1143 * @since 4.4.0 The `$use_cache` parameter was deprecated. 1144 * @since 4.4.0 Modified into wrapper for get_network_option() 1145 * 1146 * @see get_network_option() 1147 * 1148 * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. 1149 * @param mixed $default Optional value to return if option doesn't exist. Default false. 1150 * @param bool $deprecated Whether to use cache. Multisite only. Always set to true. 1151 * @return mixed Value set for the option. 1152 */ 1153 function get_site_option( $option, $default = false, $deprecated = true ) { 1154 return get_network_option( null, $option, $default ); 1155 } 1156 1157 /** 1158 * Add a new option for the current network. 1159 * 1160 * Existing options will not be updated. Note that prior to 3.3 this wasn't the case. 1161 * 1162 * @since 2.8.0 1163 * @since 4.4.0 Modified into wrapper for add_network_option() 1164 * 1165 * @see add_network_option() 1166 * 1167 * @param string $option Name of option to add. Expected to not be SQL-escaped. 1168 * @param mixed $value Option value, can be anything. Expected to not be SQL-escaped. 1169 * @return bool False if the option was not added. True if the option was added. 1170 */ 1171 function add_site_option( $option, $value ) { 1172 return add_network_option( null, $option, $value ); 1173 } 1174 1175 /** 1176 * Removes a option by name for the current network. 1177 * 1178 * @since 2.8.0 1179 * @since 4.4.0 Modified into wrapper for delete_network_option() 1180 * 1181 * @see delete_network_option() 1182 * 1183 * @param string $option Name of option to remove. Expected to not be SQL-escaped. 1184 * @return bool True, if succeed. False, if failure. 1185 */ 1186 function delete_site_option( $option ) { 1187 return delete_network_option( null, $option ); 1188 } 1189 1190 /** 1191 * Update the value of an option that was already added for the current network. 1192 * 1193 * @since 2.8.0 1194 * @since 4.4.0 Modified into wrapper for update_network_option() 1195 * 1196 * @see update_network_option() 1197 * 1198 * @param string $option Name of option. Expected to not be SQL-escaped. 1199 * @param mixed $value Option value. Expected to not be SQL-escaped. 1200 * @return bool False if value was not updated. True if value was updated. 1201 */ 1202 function update_site_option( $option, $value ) { 1203 return update_network_option( null, $option, $value ); 1204 } 1205 1206 /** 1207 * Retrieve a network's option value based on the option name. 1208 * 1209 * @since 4.4.0 1210 * 1211 * @see get_option() 1212 * 1213 * @global wpdb $wpdb WordPress database abstraction object. 1214 * 1215 * @param int $network_id ID of the network. Can be null to default to the current network ID. 1216 * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. 1217 * @param mixed $default Optional. Value to return if the option doesn't exist. Default false. 1218 * @return mixed Value set for the option. 1219 */ 1220 function get_network_option( $network_id, $option, $default = false ) { 1221 global $wpdb; 1222 1223 if ( $network_id && ! is_numeric( $network_id ) ) { 1224 return false; 1225 } 1226 1227 $network_id = (int) $network_id; 1228 1229 // Fallback to the current network if a network ID is not specified. 1230 if ( ! $network_id ) { 1231 $network_id = get_current_network_id(); 1232 } 1233 1234 /** 1235 * Filters an existing network option before it is retrieved. 1236 * 1237 * The dynamic portion of the hook name, `$option`, refers to the option name. 1238 * 1239 * Passing a truthy value to the filter will effectively short-circuit retrieval, 1240 * returning the passed value instead. 1241 * 1242 * @since 2.9.0 As 'pre_site_option_' . $key 1243 * @since 3.0.0 1244 * @since 4.4.0 The `$option` parameter was added. 1245 * @since 4.7.0 The `$network_id` parameter was added. 1246 * @since 4.9.0 The `$default` parameter was added. 1247 * 1248 * @param mixed $pre_option The value to return instead of the option value. This differs from 1249 * `$default`, which is used as the fallback value in the event the 1250 * option doesn't exist elsewhere in get_network_option(). Default 1251 * is false (to skip past the short-circuit). 1252 * @param string $option Option name. 1253 * @param int $network_id ID of the network. 1254 * @param mixed $default The fallback value to return if the option does not exist. 1255 * Default is false. 1256 */ 1257 $pre = apply_filters( "pre_site_option_{$option}", false, $option, $network_id, $default ); 1258 1259 if ( false !== $pre ) { 1260 return $pre; 1261 } 1262 1263 // prevent non-existent options from triggering multiple queries 1264 $notoptions_key = "$network_id:notoptions"; 1265 $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); 1266 1267 if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { 1268 1269 /** 1270 * Filters a specific default network option. 1271 * 1272 * The dynamic portion of the hook name, `$option`, refers to the option name. 1273 * 1274 * @since 3.4.0 1275 * @since 4.4.0 The `$option` parameter was added. 1276 * @since 4.7.0 The `$network_id` parameter was added. 1277 * 1278 * @param mixed $default The value to return if the site option does not exist 1279 * in the database. 1280 * @param string $option Option name. 1281 * @param int $network_id ID of the network. 1282 */ 1283 return apply_filters( "default_site_option_{$option}", $default, $option, $network_id ); 1284 } 1285 1286 if ( ! is_multisite() ) { 1287 /** This filter is documented in wp-includes/option.php */ 1288 $default = apply_filters( 'default_site_option_' . $option, $default, $option, $network_id ); 1289 $value = get_option( $option, $default ); 1290 } else { 1291 $cache_key = "$network_id:$option"; 1292 $value = wp_cache_get( $cache_key, 'site-options' ); 1293 1294 if ( ! isset( $value ) || false === $value ) { 1295 $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $network_id ) ); 1296 1297 // Has to be get_row instead of get_var because of funkiness with 0, false, null values 1298 if ( is_object( $row ) ) { 1299 $value = $row->meta_value; 1300 $value = maybe_unserialize( $value ); 1301 wp_cache_set( $cache_key, $value, 'site-options' ); 1302 } else { 1303 if ( ! is_array( $notoptions ) ) { 1304 $notoptions = array(); 1305 } 1306 $notoptions[ $option ] = true; 1307 wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); 1308 1309 /** This filter is documented in wp-includes/option.php */ 1310 $value = apply_filters( 'default_site_option_' . $option, $default, $option, $network_id ); 1311 } 1312 } 1313 } 1314 1315 if ( ! is_array( $notoptions ) ) { 1316 $notoptions = array(); 1317 wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); 1318 } 1319 1320 /** 1321 * Filters the value of an existing network option. 1322 * 1323 * The dynamic portion of the hook name, `$option`, refers to the option name. 1324 * 1325 * @since 2.9.0 As 'site_option_' . $key 1326 * @since 3.0.0 1327 * @since 4.4.0 The `$option` parameter was added. 1328 * @since 4.7.0 The `$network_id` parameter was added. 1329 * 1330 * @param mixed $value Value of network option. 1331 * @param string $option Option name. 1332 * @param int $network_id ID of the network. 1333 */ 1334 return apply_filters( "site_option_{$option}", $value, $option, $network_id ); 1335 } 1336 1337 /** 1338 * Add a new network option. 1339 * 1340 * Existing options will not be updated. 1341 * 1342 * @since 4.4.0 1343 * 1344 * @see add_option() 1345 * 1346 * @global wpdb $wpdb WordPress database abstraction object. 1347 * 1348 * @param int $network_id ID of the network. Can be null to default to the current network ID. 1349 * @param string $option Name of option to add. Expected to not be SQL-escaped. 1350 * @param mixed $value Option value, can be anything. Expected to not be SQL-escaped. 1351 * @return bool False if option was not added and true if option was added. 1352 */ 1353 function add_network_option( $network_id, $option, $value ) { 1354 global $wpdb; 1355 1356 if ( $network_id && ! is_numeric( $network_id ) ) { 1357 return false; 1358 } 1359 1360 $network_id = (int) $network_id; 1361 1362 // Fallback to the current network if a network ID is not specified. 1363 if ( ! $network_id ) { 1364 $network_id = get_current_network_id(); 1365 } 1366 1367 wp_protect_special_option( $option ); 1368 1369 /** 1370 * Filters the value of a specific network option before it is added. 1371 * 1372 * The dynamic portion of the hook name, `$option`, refers to the option name. 1373 * 1374 * @since 2.9.0 As 'pre_add_site_option_' . $key 1375 * @since 3.0.0 1376 * @since 4.4.0 The `$option` parameter was added. 1377 * @since 4.7.0 The `$network_id` parameter was added. 1378 * 1379 * @param mixed $value Value of network option. 1380 * @param string $option Option name. 1381 * @param int $network_id ID of the network. 1382 */ 1383 $value = apply_filters( "pre_add_site_option_{$option}", $value, $option, $network_id ); 1384 1385 $notoptions_key = "$network_id:notoptions"; 1386 1387 if ( ! is_multisite() ) { 1388 $result = add_option( $option, $value, '', 'no' ); 1389 } else { 1390 $cache_key = "$network_id:$option"; 1391 1392 // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query 1393 $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); 1394 if ( ! is_array( $notoptions ) || ! isset( $notoptions[ $option ] ) ) { 1395 if ( false !== get_network_option( $network_id, $option, false ) ) { 1396 return false; 1397 } 1398 } 1399 1400 $value = sanitize_option( $option, $value ); 1401 1402 $serialized_value = maybe_serialize( $value ); 1403 $result = $wpdb->insert( 1404 $wpdb->sitemeta, 1405 array( 1406 'site_id' => $network_id, 1407 'meta_key' => $option, 1408 'meta_value' => $serialized_value, 1409 ) 1410 ); 1411 1412 if ( ! $result ) { 1413 return false; 1414 } 1415 1416 wp_cache_set( $cache_key, $value, 'site-options' ); 1417 1418 // This option exists now 1419 $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); // yes, again... we need it to be fresh 1420 if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { 1421 unset( $notoptions[ $option ] ); 1422 wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); 1423 } 1424 } 1425 1426 if ( $result ) { 1427 1428 /** 1429 * Fires after a specific network option has been successfully added. 1430 * 1431 * The dynamic portion of the hook name, `$option`, refers to the option name. 1432 * 1433 * @since 2.9.0 As "add_site_option_{$key}" 1434 * @since 3.0.0 1435 * @since 4.7.0 The `$network_id` parameter was added. 1436 * 1437 * @param string $option Name of the network option. 1438 * @param mixed $value Value of the network option. 1439 * @param int $network_id ID of the network. 1440 */ 1441 do_action( "add_site_option_{$option}", $option, $value, $network_id ); 1442 1443 /** 1444 * Fires after a network option has been successfully added. 1445 * 1446 * @since 3.0.0 1447 * @since 4.7.0 The `$network_id` parameter was added. 1448 * 1449 * @param string $option Name of the network option. 1450 * @param mixed $value Value of the network option. 1451 * @param int $network_id ID of the network. 1452 */ 1453 do_action( 'add_site_option', $option, $value, $network_id ); 1454 1455 return true; 1456 } 1457 1458 return false; 1459 } 1460 1461 /** 1462 * Removes a network option by name. 1463 * 1464 * @since 4.4.0 1465 * 1466 * @see delete_option() 1467 * 1468 * @global wpdb $wpdb WordPress database abstraction object. 1469 * 1470 * @param int $network_id ID of the network. Can be null to default to the current network ID. 1471 * @param string $option Name of option to remove. Expected to not be SQL-escaped. 1472 * @return bool True, if succeed. False, if failure. 1473 */ 1474 function delete_network_option( $network_id, $option ) { 1475 global $wpdb; 1476 1477 if ( $network_id && ! is_numeric( $network_id ) ) { 1478 return false; 1479 } 1480 1481 $network_id = (int) $network_id; 1482 1483 // Fallback to the current network if a network ID is not specified. 1484 if ( ! $network_id ) { 1485 $network_id = get_current_network_id(); 1486 } 1487 1488 /** 1489 * Fires immediately before a specific network option is deleted. 1490 * 1491 * The dynamic portion of the hook name, `$option`, refers to the option name. 1492 * 1493 * @since 3.0.0 1494 * @since 4.4.0 The `$option` parameter was added. 1495 * @since 4.7.0 The `$network_id` parameter was added. 1496 * 1497 * @param string $option Option name. 1498 * @param int $network_id ID of the network. 1499 */ 1500 do_action( "pre_delete_site_option_{$option}", $option, $network_id ); 1501 1502 if ( ! is_multisite() ) { 1503 $result = delete_option( $option ); 1504 } else { 1505 $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $network_id ) ); 1506 if ( is_null( $row ) || ! $row->meta_id ) { 1507 return false; 1508 } 1509 $cache_key = "$network_id:$option"; 1510 wp_cache_delete( $cache_key, 'site-options' ); 1511 1512 $result = $wpdb->delete( 1513 $wpdb->sitemeta, 1514 array( 1515 'meta_key' => $option, 1516 'site_id' => $network_id, 1517 ) 1518 ); 1519 } 1520 1521 if ( $result ) { 1522 1523 /** 1524 * Fires after a specific network option has been deleted. 1525 * 1526 * The dynamic portion of the hook name, `$option`, refers to the option name. 1527 * 1528 * @since 2.9.0 As "delete_site_option_{$key}" 1529 * @since 3.0.0 1530 * @since 4.7.0 The `$network_id` parameter was added. 1531 * 1532 * @param string $option Name of the network option. 1533 * @param int $network_id ID of the network. 1534 */ 1535 do_action( "delete_site_option_{$option}", $option, $network_id ); 1536 1537 /** 1538 * Fires after a network option has been deleted. 1539 * 1540 * @since 3.0.0 1541 * @since 4.7.0 The `$network_id` parameter was added. 1542 * 1543 * @param string $option Name of the network option. 1544 * @param int $network_id ID of the network. 1545 */ 1546 do_action( 'delete_site_option', $option, $network_id ); 1547 1548 return true; 1549 } 1550 1551 return false; 1552 } 1553 1554 /** 1555 * Update the value of a network option that was already added. 1556 * 1557 * @since 4.4.0 1558 * 1559 * @see update_option() 1560 * 1561 * @global wpdb $wpdb WordPress database abstraction object. 1562 * 1563 * @param int $network_id ID of the network. Can be null to default to the current network ID. 1564 * @param string $option Name of option. Expected to not be SQL-escaped. 1565 * @param mixed $value Option value. Expected to not be SQL-escaped. 1566 * @return bool False if value was not updated and true if value was updated. 1567 */ 1568 function update_network_option( $network_id, $option, $value ) { 1569 global $wpdb; 1570 1571 if ( $network_id && ! is_numeric( $network_id ) ) { 1572 return false; 1573 } 1574 1575 $network_id = (int) $network_id; 1576 1577 // Fallback to the current network if a network ID is not specified. 1578 if ( ! $network_id ) { 1579 $network_id = get_current_network_id(); 1580 } 1581 1582 wp_protect_special_option( $option ); 1583 1584 $old_value = get_network_option( $network_id, $option, false ); 1585 1586 /** 1587 * Filters a specific network option before its value is updated. 1588 * 1589 * The dynamic portion of the hook name, `$option`, refers to the option name. 1590 * 1591 * @since 2.9.0 As 'pre_update_site_option_' . $key 1592 * @since 3.0.0 1593 * @since 4.4.0 The `$option` parameter was added. 1594 * @since 4.7.0 The `$network_id` parameter was added. 1595 * 1596 * @param mixed $value New value of the network option. 1597 * @param mixed $old_value Old value of the network option. 1598 * @param string $option Option name. 1599 * @param int $network_id ID of the network. 1600 */ 1601 $value = apply_filters( "pre_update_site_option_{$option}", $value, $old_value, $option, $network_id ); 1602 1603 /* 1604 * If the new and old values are the same, no need to update. 1605 * 1606 * Unserialized values will be adequate in most cases. If the unserialized 1607 * data differs, the (maybe) serialized data is checked to avoid 1608 * unnecessary database calls for otherwise identical object instances. 1609 * 1610 * See https://core.trac.wordpress.org/ticket/44956 1611 */ 1612 if ( $value === $old_value || maybe_serialize( $value ) === maybe_serialize( $old_value ) ) { 1613 return false; 1614 } 1615 1616 if ( false === $old_value ) { 1617 return add_network_option( $network_id, $option, $value ); 1618 } 1619 1620 $notoptions_key = "$network_id:notoptions"; 1621 $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); 1622 if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { 1623 unset( $notoptions[ $option ] ); 1624 wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); 1625 } 1626 1627 if ( ! is_multisite() ) { 1628 $result = update_option( $option, $value, 'no' ); 1629 } else { 1630 $value = sanitize_option( $option, $value ); 1631 1632 $serialized_value = maybe_serialize( $value ); 1633 $result = $wpdb->update( 1634 $wpdb->sitemeta, 1635 array( 'meta_value' => $serialized_value ), 1636 array( 1637 'site_id' => $network_id, 1638 'meta_key' => $option, 1639 ) 1640 ); 1641 1642 if ( $result ) { 1643 $cache_key = "$network_id:$option"; 1644 wp_cache_set( $cache_key, $value, 'site-options' ); 1645 } 1646 } 1647 1648 if ( $result ) { 1649 1650 /** 1651 * Fires after the value of a specific network option has been successfully updated. 1652 * 1653 * The dynamic portion of the hook name, `$option`, refers to the option name. 1654 * 1655 * @since 2.9.0 As "update_site_option_{$key}" 1656 * @since 3.0.0 1657 * @since 4.7.0 The `$network_id` parameter was added. 1658 * 1659 * @param string $option Name of the network option. 1660 * @param mixed $value Current value of the network option. 1661 * @param mixed $old_value Old value of the network option. 1662 * @param int $network_id ID of the network. 1663 */ 1664 do_action( "update_site_option_{$option}", $option, $value, $old_value, $network_id ); 1665 1666 /** 1667 * Fires after the value of a network option has been successfully updated. 1668 * 1669 * @since 3.0.0 1670 * @since 4.7.0 The `$network_id` parameter was added. 1671 * 1672 * @param string $option Name of the network option. 1673 * @param mixed $value Current value of the network option. 1674 * @param mixed $old_value Old value of the network option. 1675 * @param int $network_id ID of the network. 1676 */ 1677 do_action( 'update_site_option', $option, $value, $old_value, $network_id ); 1678 1679 return true; 1680 } 1681 1682 return false; 1683 } 1684 1685 /** 1686 * Delete a site transient. 1687 * 1688 * @since 2.9.0 1689 * 1690 * @param string $transient Transient name. Expected to not be SQL-escaped. 1691 * @return bool True if successful, false otherwise 1692 */ 1693 function delete_site_transient( $transient ) { 1694 1695 /** 1696 * Fires immediately before a specific site transient is deleted. 1697 * 1698 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 1699 * 1700 * @since 3.0.0 1701 * 1702 * @param string $transient Transient name. 1703 */ 1704 do_action( "delete_site_transient_{$transient}", $transient ); 1705 1706 if ( wp_using_ext_object_cache() ) { 1707 $result = wp_cache_delete( $transient, 'site-transient' ); 1708 } else { 1709 $option_timeout = '_site_transient_timeout_' . $transient; 1710 $option = '_site_transient_' . $transient; 1711 $result = delete_site_option( $option ); 1712 if ( $result ) { 1713 delete_site_option( $option_timeout ); 1714 } 1715 } 1716 if ( $result ) { 1717 1718 /** 1719 * Fires after a transient is deleted. 1720 * 1721 * @since 3.0.0 1722 * 1723 * @param string $transient Deleted transient name. 1724 */ 1725 do_action( 'deleted_site_transient', $transient ); 1726 } 1727 1728 return $result; 1729 } 1730 1731 /** 1732 * Get the value of a site transient. 1733 * 1734 * If the transient does not exist, does not have a value, or has expired, 1735 * then the return value will be false. 1736 * 1737 * @since 2.9.0 1738 * 1739 * @see get_transient() 1740 * 1741 * @param string $transient Transient name. Expected to not be SQL-escaped. 1742 * @return mixed Value of transient. 1743 */ 1744 function get_site_transient( $transient ) { 1745 1746 /** 1747 * Filters the value of an existing site transient. 1748 * 1749 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 1750 * 1751 * Passing a truthy value to the filter will effectively short-circuit retrieval, 1752 * returning the passed value instead. 1753 * 1754 * @since 2.9.0 1755 * @since 4.4.0 The `$transient` parameter was added. 1756 * 1757 * @param mixed $pre_site_transient The default value to return if the site transient does not exist. 1758 * Any value other than false will short-circuit the retrieval 1759 * of the transient, and return the returned value. 1760 * @param string $transient Transient name. 1761 */ 1762 $pre = apply_filters( "pre_site_transient_{$transient}", false, $transient ); 1763 1764 if ( false !== $pre ) { 1765 return $pre; 1766 } 1767 1768 if ( wp_using_ext_object_cache() ) { 1769 $value = wp_cache_get( $transient, 'site-transient' ); 1770 } else { 1771 // Core transients that do not have a timeout. Listed here so querying timeouts can be avoided. 1772 $no_timeout = array( 'update_core', 'update_plugins', 'update_themes' ); 1773 $transient_option = '_site_transient_' . $transient; 1774 if ( ! in_array( $transient, $no_timeout ) ) { 1775 $transient_timeout = '_site_transient_timeout_' . $transient; 1776 $timeout = get_site_option( $transient_timeout ); 1777 if ( false !== $timeout && $timeout < time() ) { 1778 delete_site_option( $transient_option ); 1779 delete_site_option( $transient_timeout ); 1780 $value = false; 1781 } 1782 } 1783 1784 if ( ! isset( $value ) ) { 1785 $value = get_site_option( $transient_option ); 1786 } 1787 } 1788 1789 /** 1790 * Filters the value of an existing site transient. 1791 * 1792 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 1793 * 1794 * @since 2.9.0 1795 * @since 4.4.0 The `$transient` parameter was added. 1796 * 1797 * @param mixed $value Value of site transient. 1798 * @param string $transient Transient name. 1799 */ 1800 return apply_filters( "site_transient_{$transient}", $value, $transient ); 1801 } 1802 1803 /** 1804 * Set/update the value of a site transient. 1805 * 1806 * You do not need to serialize values, if the value needs to be serialize, then 1807 * it will be serialized before it is set. 1808 * 1809 * @since 2.9.0 1810 * 1811 * @see set_transient() 1812 * 1813 * @param string $transient Transient name. Expected to not be SQL-escaped. Must be 1814 * 167 characters or fewer in length. 1815 * @param mixed $value Transient value. Expected to not be SQL-escaped. 1816 * @param int $expiration Optional. Time until expiration in seconds. Default 0 (no expiration). 1817 * @return bool False if value was not set and true if value was set. 1818 */ 1819 function set_site_transient( $transient, $value, $expiration = 0 ) { 1820 1821 /** 1822 * Filters the value of a specific site transient before it is set. 1823 * 1824 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 1825 * 1826 * @since 3.0.0 1827 * @since 4.4.0 The `$transient` parameter was added. 1828 * 1829 * @param mixed $value New value of site transient. 1830 * @param string $transient Transient name. 1831 */ 1832 $value = apply_filters( "pre_set_site_transient_{$transient}", $value, $transient ); 1833 1834 $expiration = (int) $expiration; 1835 1836 /** 1837 * Filters the expiration for a site transient before its value is set. 1838 * 1839 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 1840 * 1841 * @since 4.4.0 1842 * 1843 * @param int $expiration Time until expiration in seconds. Use 0 for no expiration. 1844 * @param mixed $value New value of site transient. 1845 * @param string $transient Transient name. 1846 */ 1847 $expiration = apply_filters( "expiration_of_site_transient_{$transient}", $expiration, $value, $transient ); 1848 1849 if ( wp_using_ext_object_cache() ) { 1850 $result = wp_cache_set( $transient, $value, 'site-transient', $expiration ); 1851 } else { 1852 $transient_timeout = '_site_transient_timeout_' . $transient; 1853 $option = '_site_transient_' . $transient; 1854 if ( false === get_site_option( $option ) ) { 1855 if ( $expiration ) { 1856 add_site_option( $transient_timeout, time() + $expiration ); 1857 } 1858 $result = add_site_option( $option, $value ); 1859 } else { 1860 if ( $expiration ) { 1861 update_site_option( $transient_timeout, time() + $expiration ); 1862 } 1863 $result = update_site_option( $option, $value ); 1864 } 1865 } 1866 if ( $result ) { 1867 1868 /** 1869 * Fires after the value for a specific site transient has been set. 1870 * 1871 * The dynamic portion of the hook name, `$transient`, refers to the transient name. 1872 * 1873 * @since 3.0.0 1874 * @since 4.4.0 The `$transient` parameter was added 1875 * 1876 * @param mixed $value Site transient value. 1877 * @param int $expiration Time until expiration in seconds. 1878 * @param string $transient Transient name. 1879 */ 1880 do_action( "set_site_transient_{$transient}", $value, $expiration, $transient ); 1881 1882 /** 1883 * Fires after the value for a site transient has been set. 1884 * 1885 * @since 3.0.0 1886 * 1887 * @param string $transient The name of the site transient. 1888 * @param mixed $value Site transient value. 1889 * @param int $expiration Time until expiration in seconds. 1890 */ 1891 do_action( 'setted_site_transient', $transient, $value, $expiration ); 1892 } 1893 return $result; 1894 } 1895 1896 /** 1897 * Register default settings available in WordPress. 1898 * 1899 * The settings registered here are primarily useful for the REST API, so this 1900 * does not encompass all settings available in WordPress. 1901 * 1902 * @since 4.7.0 1903 */ 1904 function register_initial_settings() { 1905 register_setting( 1906 'general', 1907 'blogname', 1908 array( 1909 'show_in_rest' => array( 1910 'name' => 'title', 1911 ), 1912 'type' => 'string', 1913 'description' => __( 'Site title.' ), 1914 ) 1915 ); 1916 1917 register_setting( 1918 'general', 1919 'blogdescription', 1920 array( 1921 'show_in_rest' => array( 1922 'name' => 'description', 1923 ), 1924 'type' => 'string', 1925 'description' => __( 'Site tagline.' ), 1926 ) 1927 ); 1928 1929 if ( ! is_multisite() ) { 1930 register_setting( 1931 'general', 1932 'siteurl', 1933 array( 1934 'show_in_rest' => array( 1935 'name' => 'url', 1936 'schema' => array( 1937 'format' => 'uri', 1938 ), 1939 ), 1940 'type' => 'string', 1941 'description' => __( 'Site URL.' ), 1942 ) 1943 ); 1944 } 1945 1946 if ( ! is_multisite() ) { 1947 register_setting( 1948 'general', 1949 'admin_email', 1950 array( 1951 'show_in_rest' => array( 1952 'name' => 'email', 1953 'schema' => array( 1954 'format' => 'email', 1955 ), 1956 ), 1957 'type' => 'string', 1958 'description' => __( 'This address is used for admin purposes, like new user notification.' ), 1959 ) 1960 ); 1961 } 1962 1963 register_setting( 1964 'general', 1965 'timezone_string', 1966 array( 1967 'show_in_rest' => array( 1968 'name' => 'timezone', 1969 ), 1970 'type' => 'string', 1971 'description' => __( 'A city in the same timezone as you.' ), 1972 ) 1973 ); 1974 1975 register_setting( 1976 'general', 1977 'date_format', 1978 array( 1979 'show_in_rest' => true, 1980 'type' => 'string', 1981 'description' => __( 'A date format for all date strings.' ), 1982 ) 1983 ); 1984 1985 register_setting( 1986 'general', 1987 'time_format', 1988 array( 1989 'show_in_rest' => true, 1990 'type' => 'string', 1991 'description' => __( 'A time format for all time strings.' ), 1992 ) 1993 ); 1994 1995 register_setting( 1996 'general', 1997 'start_of_week', 1998 array( 1999 'show_in_rest' => true, 2000 'type' => 'integer', 2001 'description' => __( 'A day number of the week that the week should start on.' ), 2002 ) 2003 ); 2004 2005 register_setting( 2006 'general', 2007 'WPLANG', 2008 array( 2009 'show_in_rest' => array( 2010 'name' => 'language', 2011 ), 2012 'type' => 'string', 2013 'description' => __( 'WordPress locale code.' ), 2014 'default' => 'en_US', 2015 ) 2016 ); 2017 2018 register_setting( 2019 'writing', 2020 'use_smilies', 2021 array( 2022 'show_in_rest' => true, 2023 'type' => 'boolean', 2024 'description' => __( 'Convert emoticons like :-) and :-P to graphics on display.' ), 2025 'default' => true, 2026 ) 2027 ); 2028 2029 register_setting( 2030 'writing', 2031 'default_category', 2032 array( 2033 'show_in_rest' => true, 2034 'type' => 'integer', 2035 'description' => __( 'Default post category.' ), 2036 ) 2037 ); 2038 2039 register_setting( 2040 'writing', 2041 'default_post_format', 2042 array( 2043 'show_in_rest' => true, 2044 'type' => 'string', 2045 'description' => __( 'Default post format.' ), 2046 ) 2047 ); 2048 2049 register_setting( 2050 'reading', 2051 'posts_per_page', 2052 array( 2053 'show_in_rest' => true, 2054 'type' => 'integer', 2055 'description' => __( 'Blog pages show at most.' ), 2056 'default' => 10, 2057 ) 2058 ); 2059 2060 register_setting( 2061 'discussion', 2062 'default_ping_status', 2063 array( 2064 'show_in_rest' => array( 2065 'schema' => array( 2066 'enum' => array( 'open', 'closed' ), 2067 ), 2068 ), 2069 'type' => 'string', 2070 'description' => __( 'Allow link notifications from other blogs (pingbacks and trackbacks) on new articles.' ), 2071 ) 2072 ); 2073 2074 register_setting( 2075 'discussion', 2076 'default_comment_status', 2077 array( 2078 'show_in_rest' => array( 2079 'schema' => array( 2080 'enum' => array( 'open', 'closed' ), 2081 ), 2082 ), 2083 'type' => 'string', 2084 'description' => __( 'Allow people to submit comments on new posts.' ), 2085 ) 2086 ); 2087 } 2088 2089 /** 2090 * Register a setting and its data. 2091 * 2092 * @since 2.7.0 2093 * @since 4.7.0 `$args` can be passed to set flags on the setting, similar to `register_meta()`. 2094 * 2095 * @global array $new_whitelist_options 2096 * @global array $wp_registered_settings 2097 * 2098 * @param string $option_group A settings group name. Should correspond to a whitelisted option key name. 2099 * Default whitelisted option key names include "general," "discussion," and "reading," among others. 2100 * @param string $option_name The name of an option to sanitize and save. 2101 * @param array $args { 2102 * Data used to describe the setting when registered. 2103 * 2104 * @type string $type The type of data associated with this setting. 2105 * Valid values are 'string', 'boolean', 'integer', and 'number'. 2106 * @type string $description A description of the data attached to this setting. 2107 * @type callable $sanitize_callback A callback function that sanitizes the option's value. 2108 * @type bool $show_in_rest Whether data associated with this setting should be included in the REST API. 2109 * @type mixed $default Default value when calling `get_option()`. 2110 * } 2111 */ 2112 function register_setting( $option_group, $option_name, $args = array() ) { 2113 global $new_whitelist_options, $wp_registered_settings; 2114 2115 $defaults = array( 2116 'type' => 'string', 2117 'group' => $option_group, 2118 'description' => '', 2119 'sanitize_callback' => null, 2120 'show_in_rest' => false, 2121 ); 2122 2123 // Back-compat: old sanitize callback is added. 2124 if ( is_callable( $args ) ) { 2125 $args = array( 2126 'sanitize_callback' => $args, 2127 ); 2128 } 2129 2130 /** 2131 * Filters the registration arguments when registering a setting. 2132 * 2133 * @since 4.7.0 2134 * 2135 * @param array $args Array of setting registration arguments. 2136 * @param array $defaults Array of default arguments. 2137 * @param string $option_group Setting group. 2138 * @param string $option_name Setting name. 2139 */ 2140 $args = apply_filters( 'register_setting_args', $args, $defaults, $option_group, $option_name ); 2141 $args = wp_parse_args( $args, $defaults ); 2142 2143 if ( ! is_array( $wp_registered_settings ) ) { 2144 $wp_registered_settings = array(); 2145 } 2146 2147 if ( 'misc' == $option_group ) { 2148 _deprecated_argument( 2149 __FUNCTION__, 2150 '3.0.0', 2151 sprintf( 2152 /* translators: %s: misc */ 2153 __( 'The "%s" options group has been removed. Use another settings group.' ), 2154 'misc' 2155 ) 2156 ); 2157 $option_group = 'general'; 2158 } 2159 2160 if ( 'privacy' == $option_group ) { 2161 _deprecated_argument( 2162 __FUNCTION__, 2163 '3.5.0', 2164 sprintf( 2165 /* translators: %s: privacy */ 2166 __( 'The "%s" options group has been removed. Use another settings group.' ), 2167 'privacy' 2168 ) 2169 ); 2170 $option_group = 'reading'; 2171 } 2172 2173 $new_whitelist_options[ $option_group ][] = $option_name; 2174 if ( ! empty( $args['sanitize_callback'] ) ) { 2175 add_filter( "sanitize_option_{$option_name}", $args['sanitize_callback'] ); 2176 } 2177 if ( array_key_exists( 'default', $args ) ) { 2178 add_filter( "default_option_{$option_name}", 'filter_default_option', 10, 3 ); 2179 } 2180 2181 $wp_registered_settings[ $option_name ] = $args; 2182 } 2183 2184 /** 2185 * Unregister a setting. 2186 * 2187 * @since 2.7.0 2188 * @since 4.7.0 `$sanitize_callback` was deprecated. The callback from `register_setting()` is now used instead. 2189 * 2190 * @global array $new_whitelist_options 2191 * @global array $wp_registered_settings 2192 * 2193 * @param string $option_group The settings group name used during registration. 2194 * @param string $option_name The name of the option to unregister. 2195 * @param callable $deprecated Deprecated. 2196 */ 2197 function unregister_setting( $option_group, $option_name, $deprecated = '' ) { 2198 global $new_whitelist_options, $wp_registered_settings; 2199 2200 if ( 'misc' == $option_group ) { 2201 _deprecated_argument( 2202 __FUNCTION__, 2203 '3.0.0', 2204 sprintf( 2205 /* translators: %s: misc */ 2206 __( 'The "%s" options group has been removed. Use another settings group.' ), 2207 'misc' 2208 ) 2209 ); 2210 $option_group = 'general'; 2211 } 2212 2213 if ( 'privacy' == $option_group ) { 2214 _deprecated_argument( 2215 __FUNCTION__, 2216 '3.5.0', 2217 sprintf( 2218 /* translators: %s: privacy */ 2219 __( 'The "%s" options group has been removed. Use another settings group.' ), 2220 'privacy' 2221 ) 2222 ); 2223 $option_group = 'reading'; 2224 } 2225 2226 $pos = array_search( $option_name, (array) $new_whitelist_options[ $option_group ] ); 2227 if ( $pos !== false ) { 2228 unset( $new_whitelist_options[ $option_group ][ $pos ] ); 2229 } 2230 if ( '' !== $deprecated ) { 2231 _deprecated_argument( 2232 __FUNCTION__, 2233 '4.7.0', 2234 sprintf( 2235 /* translators: 1: $sanitize_callback, 2: register_setting() */ 2236 __( '%1$s is deprecated. The callback from %2$s is used instead.' ), 2237 '<code>$sanitize_callback</code>', 2238 '<code>register_setting()</code>' 2239 ) 2240 ); 2241 remove_filter( "sanitize_option_{$option_name}", $deprecated ); 2242 } 2243 2244 if ( isset( $wp_registered_settings[ $option_name ] ) ) { 2245 // Remove the sanitize callback if one was set during registration. 2246 if ( ! empty( $wp_registered_settings[ $option_name ]['sanitize_callback'] ) ) { 2247 remove_filter( "sanitize_option_{$option_name}", $wp_registered_settings[ $option_name ]['sanitize_callback'] ); 2248 } 2249 2250 // Remove the default filter if a default was provided during registration. 2251 if ( array_key_exists( 'default', $wp_registered_settings[ $option_name ] ) ) { 2252 remove_filter( "default_option_{$option_name}", 'filter_default_option', 10 ); 2253 } 2254 2255 unset( $wp_registered_settings[ $option_name ] ); 2256 } 2257 } 2258 2259 /** 2260 * Retrieves an array of registered settings. 2261 * 2262 * @since 4.7.0 2263 * 2264 * @global array $wp_registered_settings 2265 * 2266 * @return array List of registered settings, keyed by option name. 2267 */ 2268 function get_registered_settings() { 2269 global $wp_registered_settings; 2270 2271 if ( ! is_array( $wp_registered_settings ) ) { 2272 return array(); 2273 } 2274 2275 return $wp_registered_settings; 2276 } 2277 2278 /** 2279 * Filter the default value for the option. 2280 * 2281 * For settings which register a default setting in `register_setting()`, this 2282 * function is added as a filter to `default_option_{$option}`. 2283 * 2284 * @since 4.7.0 2285 * 2286 * @param mixed $default Existing default value to return. 2287 * @param string $option Option name. 2288 * @param bool $passed_default Was `get_option()` passed a default value? 2289 * @return mixed Filtered default value. 2290 */ 2291 function filter_default_option( $default, $option, $passed_default ) { 2292 if ( $passed_default ) { 2293 return $default; 2294 } 2295 2296 $registered = get_registered_settings(); 2297 if ( empty( $registered[ $option ] ) ) { 2298 return $default; 2299 } 2300 2301 return $registered[ $option ]['default']; 2302 }
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| Generated: Tue Jan 21 01:00:03 2020 | Cross-referenced by PHPXref 0.7.1 |