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1 <?php 2 /** 3 * Comment API: WP_Comment_Query class 4 * 5 * @package WordPress 6 * @subpackage Comments 7 * @since 4.4.0 8 */ 9 10 /** 11 * Core class used for querying comments. 12 * 13 * @since 3.1.0 14 * 15 * @see WP_Comment_Query::__construct() for accepted arguments. 16 */ 17 class WP_Comment_Query { 18 19 /** 20 * SQL for database query. 21 * 22 * @since 4.0.1 23 * @var string 24 */ 25 public $request; 26 27 /** 28 * Metadata query container 29 * 30 * @since 3.5.0 31 * @var WP_Meta_Query A meta query instance. 32 */ 33 public $meta_query = false; 34 35 /** 36 * Metadata query clauses. 37 * 38 * @since 4.4.0 39 * @var array 40 */ 41 protected $meta_query_clauses; 42 43 /** 44 * SQL query clauses. 45 * 46 * @since 4.4.0 47 * @var array 48 */ 49 protected $sql_clauses = array( 50 'select' => '', 51 'from' => '', 52 'where' => array(), 53 'groupby' => '', 54 'orderby' => '', 55 'limits' => '', 56 ); 57 58 /** 59 * SQL WHERE clause. 60 * 61 * Stored after the {@see 'comments_clauses'} filter is run on the compiled WHERE sub-clauses. 62 * 63 * @since 4.4.2 64 * @var string 65 */ 66 protected $filtered_where_clause; 67 68 /** 69 * Date query container 70 * 71 * @since 3.7.0 72 * @var WP_Date_Query A date query instance. 73 */ 74 public $date_query = false; 75 76 /** 77 * Query vars set by the user. 78 * 79 * @since 3.1.0 80 * @var array 81 */ 82 public $query_vars; 83 84 /** 85 * Default values for query vars. 86 * 87 * @since 4.2.0 88 * @var array 89 */ 90 public $query_var_defaults; 91 92 /** 93 * List of comments located by the query. 94 * 95 * @since 4.0.0 96 * @var int[]|WP_Comment[] 97 */ 98 public $comments; 99 100 /** 101 * The amount of found comments for the current query. 102 * 103 * @since 4.4.0 104 * @var int 105 */ 106 public $found_comments = 0; 107 108 /** 109 * The number of pages. 110 * 111 * @since 4.4.0 112 * @var int 113 */ 114 public $max_num_pages = 0; 115 116 /** 117 * Make private/protected methods readable for backward compatibility. 118 * 119 * @since 4.0.0 120 * 121 * @param string $name Method to call. 122 * @param array $arguments Arguments to pass when calling. 123 * @return mixed|false Return value of the callback, false otherwise. 124 */ 125 public function __call( $name, $arguments ) { 126 if ( 'get_search_sql' === $name ) { 127 return $this->get_search_sql( ...$arguments ); 128 } 129 return false; 130 } 131 132 /** 133 * Constructor. 134 * 135 * Sets up the comment query, based on the query vars passed. 136 * 137 * @since 4.2.0 138 * @since 4.4.0 `$parent__in` and `$parent__not_in` were added. 139 * @since 4.4.0 Order by `comment__in` was added. `$update_comment_meta_cache`, `$no_found_rows`, 140 * `$hierarchical`, and `$update_comment_post_cache` were added. 141 * @since 4.5.0 Introduced the `$author_url` argument. 142 * @since 4.6.0 Introduced the `$cache_domain` argument. 143 * @since 4.9.0 Introduced the `$paged` argument. 144 * @since 5.1.0 Introduced the `$meta_compare_key` argument. 145 * @since 5.3.0 Introduced the `$meta_type_key` argument. 146 * 147 * @param string|array $query { 148 * Optional. Array or query string of comment query parameters. Default empty. 149 * 150 * @type string $author_email Comment author email address. Default empty. 151 * @type string $author_url Comment author URL. Default empty. 152 * @type int[] $author__in Array of author IDs to include comments for. Default empty. 153 * @type int[] $author__not_in Array of author IDs to exclude comments for. Default empty. 154 * @type int[] $comment__in Array of comment IDs to include. Default empty. 155 * @type int[] $comment__not_in Array of comment IDs to exclude. Default empty. 156 * @type bool $count Whether to return a comment count (true) or array of 157 * comment objects (false). Default false. 158 * @type array $date_query Date query clauses to limit comments by. See WP_Date_Query. 159 * Default null. 160 * @type string $fields Comment fields to return. Accepts 'ids' for comment IDs 161 * only or empty for all fields. Default empty. 162 * @type int $ID Currently unused. 163 * @type array $include_unapproved Array of IDs or email addresses of users whose unapproved 164 * comments will be returned by the query regardless of 165 * `$status`. Default empty. 166 * @type int $karma Karma score to retrieve matching comments for. 167 * Default empty. 168 * @type string|string[] $meta_key Meta key or keys to filter by. 169 * @type string|string[] $meta_value Meta value or values to filter by. 170 * @type string $meta_compare MySQL operator used for comparing the meta value. 171 * See WP_Meta_Query::__construct for accepted values and default value. 172 * @type string $meta_compare_key MySQL operator used for comparing the meta key. 173 * See WP_Meta_Query::__construct for accepted values and default value. 174 * @type string $meta_type MySQL data type that the meta_value column will be CAST to for comparisons. 175 * See WP_Meta_Query::__construct for accepted values and default value. 176 * @type string $meta_type_key MySQL data type that the meta_key column will be CAST to for comparisons. 177 * See WP_Meta_Query::__construct for accepted values and default value. 178 * @type array $meta_query An associative array of WP_Meta_Query arguments. 179 * See WP_Meta_Query::__construct for accepted values. 180 * @type int $number Maximum number of comments to retrieve. 181 * Default empty (no limit). 182 * @type int $paged When used with `$number`, defines the page of results to return. 183 * When used with `$offset`, `$offset` takes precedence. Default 1. 184 * @type int $offset Number of comments to offset the query. Used to build 185 * LIMIT clause. Default 0. 186 * @type bool $no_found_rows Whether to disable the `SQL_CALC_FOUND_ROWS` query. 187 * Default: true. 188 * @type string|array $orderby Comment status or array of statuses. To use 'meta_value' 189 * or 'meta_value_num', `$meta_key` must also be defined. 190 * To sort by a specific `$meta_query` clause, use that 191 * clause's array key. Accepts: 192 * - 'comment_agent' 193 * - 'comment_approved' 194 * - 'comment_author' 195 * - 'comment_author_email' 196 * - 'comment_author_IP' 197 * - 'comment_author_url' 198 * - 'comment_content' 199 * - 'comment_date' 200 * - 'comment_date_gmt' 201 * - 'comment_ID' 202 * - 'comment_karma' 203 * - 'comment_parent' 204 * - 'comment_post_ID' 205 * - 'comment_type' 206 * - 'user_id' 207 * - 'comment__in' 208 * - 'meta_value' 209 * - 'meta_value_num' 210 * - The value of `$meta_key` 211 * - The array keys of `$meta_query` 212 * - false, an empty array, or 'none' to disable `ORDER BY` clause. 213 * Default: 'comment_date_gmt'. 214 * @type string $order How to order retrieved comments. Accepts 'ASC', 'DESC'. 215 * Default: 'DESC'. 216 * @type int $parent Parent ID of comment to retrieve children of. 217 * Default empty. 218 * @type int[] $parent__in Array of parent IDs of comments to retrieve children for. 219 * Default empty. 220 * @type int[] $parent__not_in Array of parent IDs of comments *not* to retrieve 221 * children for. Default empty. 222 * @type int[] $post_author__in Array of author IDs to retrieve comments for. 223 * Default empty. 224 * @type int[] $post_author__not_in Array of author IDs *not* to retrieve comments for. 225 * Default empty. 226 * @type int $post_ID Currently unused. 227 * @type int $post_id Limit results to those affiliated with a given post ID. 228 * Default 0. 229 * @type int[] $post__in Array of post IDs to include affiliated comments for. 230 * Default empty. 231 * @type int[] $post__not_in Array of post IDs to exclude affiliated comments for. 232 * Default empty. 233 * @type int $post_author Post author ID to limit results by. Default empty. 234 * @type string|string[] $post_status Post status or array of post statuses to retrieve 235 * affiliated comments for. Pass 'any' to match any value. 236 * Default empty. 237 * @type string|string[] $post_type Post type or array of post types to retrieve affiliated 238 * comments for. Pass 'any' to match any value. Default empty. 239 * @type string $post_name Post name to retrieve affiliated comments for. 240 * Default empty. 241 * @type int $post_parent Post parent ID to retrieve affiliated comments for. 242 * Default empty. 243 * @type string $search Search term(s) to retrieve matching comments for. 244 * Default empty. 245 * @type string|array $status Comment statuses to limit results by. Accepts an array 246 * or space/comma-separated list of 'hold' (`comment_status=0`), 247 * 'approve' (`comment_status=1`), 'all', or a custom 248 * comment status. Default 'all'. 249 * @type string|string[] $type Include comments of a given type, or array of types. 250 * Accepts 'comment', 'pings' (includes 'pingback' and 251 * 'trackback'), or any custom type string. Default empty. 252 * @type string[] $type__in Include comments from a given array of comment types. 253 * Default empty. 254 * @type string[] $type__not_in Exclude comments from a given array of comment types. 255 * Default empty. 256 * @type int $user_id Include comments for a specific user ID. Default empty. 257 * @type bool|string $hierarchical Whether to include comment descendants in the results. 258 * - 'threaded' returns a tree, with each comment's children 259 * stored in a `children` property on the `WP_Comment` object. 260 * - 'flat' returns a flat array of found comments plus 261 * their children. 262 * - Boolean `false` leaves out descendants. 263 * The parameter is ignored (forced to `false`) when 264 * `$fields` is 'ids' or 'counts'. Accepts 'threaded', 265 * 'flat', or false. Default: false. 266 * @type string $cache_domain Unique cache key to be produced when this query is stored in 267 * an object cache. Default is 'core'. 268 * @type bool $update_comment_meta_cache Whether to prime the metadata cache for found comments. 269 * Default true. 270 * @type bool $update_comment_post_cache Whether to prime the cache for comment posts. 271 * Default false. 272 * } 273 */ 274 public function __construct( $query = '' ) { 275 $this->query_var_defaults = array( 276 'author_email' => '', 277 'author_url' => '', 278 'author__in' => '', 279 'author__not_in' => '', 280 'include_unapproved' => '', 281 'fields' => '', 282 'ID' => '', 283 'comment__in' => '', 284 'comment__not_in' => '', 285 'karma' => '', 286 'number' => '', 287 'offset' => '', 288 'no_found_rows' => true, 289 'orderby' => '', 290 'order' => 'DESC', 291 'paged' => 1, 292 'parent' => '', 293 'parent__in' => '', 294 'parent__not_in' => '', 295 'post_author__in' => '', 296 'post_author__not_in' => '', 297 'post_ID' => '', 298 'post_id' => 0, 299 'post__in' => '', 300 'post__not_in' => '', 301 'post_author' => '', 302 'post_name' => '', 303 'post_parent' => '', 304 'post_status' => '', 305 'post_type' => '', 306 'status' => 'all', 307 'type' => '', 308 'type__in' => '', 309 'type__not_in' => '', 310 'user_id' => '', 311 'search' => '', 312 'count' => false, 313 'meta_key' => '', 314 'meta_value' => '', 315 'meta_query' => '', 316 'date_query' => null, // See WP_Date_Query. 317 'hierarchical' => false, 318 'cache_domain' => 'core', 319 'update_comment_meta_cache' => true, 320 'update_comment_post_cache' => false, 321 ); 322 323 if ( ! empty( $query ) ) { 324 $this->query( $query ); 325 } 326 } 327 328 /** 329 * Parse arguments passed to the comment query with default query parameters. 330 * 331 * @since 4.2.0 Extracted from WP_Comment_Query::query(). 332 * 333 * @param string|array $query WP_Comment_Query arguments. See WP_Comment_Query::__construct() 334 */ 335 public function parse_query( $query = '' ) { 336 if ( empty( $query ) ) { 337 $query = $this->query_vars; 338 } 339 340 $this->query_vars = wp_parse_args( $query, $this->query_var_defaults ); 341 342 /** 343 * Fires after the comment query vars have been parsed. 344 * 345 * @since 4.2.0 346 * 347 * @param WP_Comment_Query $query The WP_Comment_Query instance (passed by reference). 348 */ 349 do_action_ref_array( 'parse_comment_query', array( &$this ) ); 350 } 351 352 /** 353 * Sets up the WordPress query for retrieving comments. 354 * 355 * @since 3.1.0 356 * @since 4.1.0 Introduced 'comment__in', 'comment__not_in', 'post_author__in', 357 * 'post_author__not_in', 'author__in', 'author__not_in', 'post__in', 358 * 'post__not_in', 'include_unapproved', 'type__in', and 'type__not_in' 359 * arguments to $query_vars. 360 * @since 4.2.0 Moved parsing to WP_Comment_Query::parse_query(). 361 * 362 * @param string|array $query Array or URL query string of parameters. 363 * @return array|int List of comments, or number of comments when 'count' is passed as a query var. 364 */ 365 public function query( $query ) { 366 $this->query_vars = wp_parse_args( $query ); 367 return $this->get_comments(); 368 } 369 370 /** 371 * Get a list of comments matching the query vars. 372 * 373 * @since 4.2.0 374 * 375 * @global wpdb $wpdb WordPress database abstraction object. 376 * 377 * @return int|int[]|WP_Comment[] List of comments or number of found comments if `$count` argument is true. 378 */ 379 public function get_comments() { 380 global $wpdb; 381 382 $this->parse_query(); 383 384 // Parse meta query. 385 $this->meta_query = new WP_Meta_Query(); 386 $this->meta_query->parse_query_vars( $this->query_vars ); 387 388 /** 389 * Fires before comments are retrieved. 390 * 391 * @since 3.1.0 392 * 393 * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). 394 */ 395 do_action_ref_array( 'pre_get_comments', array( &$this ) ); 396 397 // Reparse query vars, in case they were modified in a 'pre_get_comments' callback. 398 $this->meta_query->parse_query_vars( $this->query_vars ); 399 if ( ! empty( $this->meta_query->queries ) ) { 400 $this->meta_query_clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this ); 401 } 402 403 $comment_data = null; 404 405 /** 406 * Filters the comments data before the query takes place. 407 * 408 * Return a non-null value to bypass WordPress' default comment queries. 409 * 410 * The expected return type from this filter depends on the value passed 411 * in the request query vars: 412 * - When `$this->query_vars['count']` is set, the filter should return 413 * the comment count as an integer. 414 * - When `'ids' === $this->query_vars['fields']`, the filter should return 415 * an array of comment IDs. 416 * - Otherwise the filter should return an array of WP_Comment objects. 417 * 418 * Note that if the filter returns an array of comment data, it will be assigned 419 * to the `comments` property of the current WP_Comment_Query instance. 420 * 421 * Filtering functions that require pagination information are encouraged to set 422 * the `found_comments` and `max_num_pages` properties of the WP_Comment_Query object, 423 * passed to the filter by reference. If WP_Comment_Query does not perform a database 424 * query, it will not have enough information to generate these values itself. 425 * 426 * @since 5.3.0 427 * @since 5.6.0 The returned array of comment data is assigned to the `comments` property 428 * of the current WP_Comment_Query instance. 429 * 430 * @param array|int|null $comment_data Return an array of comment data to short-circuit WP's comment query, 431 * the comment count as an integer if `$this->query_vars['count']` is set, 432 * or null to allow WP to run its normal queries. 433 * @param WP_Comment_Query $query The WP_Comment_Query instance, passed by reference. 434 */ 435 $comment_data = apply_filters_ref_array( 'comments_pre_query', array( $comment_data, &$this ) ); 436 437 if ( null !== $comment_data ) { 438 if ( is_array( $comment_data ) && ! $this->query_vars['count'] ) { 439 $this->comments = $comment_data; 440 } 441 442 return $comment_data; 443 } 444 445 /* 446 * Only use the args defined in the query_var_defaults to compute the key, 447 * but ignore 'fields', 'update_comment_meta_cache', 'update_comment_post_cache' which does not affect query results. 448 */ 449 $_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ); 450 unset( $_args['fields'], $_args['update_comment_meta_cache'], $_args['update_comment_post_cache'] ); 451 452 $key = md5( serialize( $_args ) ); 453 $last_changed = wp_cache_get_last_changed( 'comment' ); 454 455 $cache_key = "get_comments:$key:$last_changed"; 456 $cache_value = wp_cache_get( $cache_key, 'comment' ); 457 if ( false === $cache_value ) { 458 $comment_ids = $this->get_comment_ids(); 459 if ( $comment_ids ) { 460 $this->set_found_comments(); 461 } 462 463 $cache_value = array( 464 'comment_ids' => $comment_ids, 465 'found_comments' => $this->found_comments, 466 ); 467 wp_cache_add( $cache_key, $cache_value, 'comment' ); 468 } else { 469 $comment_ids = $cache_value['comment_ids']; 470 $this->found_comments = $cache_value['found_comments']; 471 } 472 473 if ( $this->found_comments && $this->query_vars['number'] ) { 474 $this->max_num_pages = ceil( $this->found_comments / $this->query_vars['number'] ); 475 } 476 477 // If querying for a count only, there's nothing more to do. 478 if ( $this->query_vars['count'] ) { 479 // $comment_ids is actually a count in this case. 480 return (int) $comment_ids; 481 } 482 483 $comment_ids = array_map( 'intval', $comment_ids ); 484 485 if ( 'ids' === $this->query_vars['fields'] ) { 486 $this->comments = $comment_ids; 487 return $this->comments; 488 } 489 490 _prime_comment_caches( $comment_ids, $this->query_vars['update_comment_meta_cache'] ); 491 492 // Fetch full comment objects from the primed cache. 493 $_comments = array(); 494 foreach ( $comment_ids as $comment_id ) { 495 $_comment = get_comment( $comment_id ); 496 if ( $_comment ) { 497 $_comments[] = $_comment; 498 } 499 } 500 501 // Prime comment post caches. 502 if ( $this->query_vars['update_comment_post_cache'] ) { 503 $comment_post_ids = array(); 504 foreach ( $_comments as $_comment ) { 505 $comment_post_ids[] = $_comment->comment_post_ID; 506 } 507 508 _prime_post_caches( $comment_post_ids, false, false ); 509 } 510 511 /** 512 * Filters the comment query results. 513 * 514 * @since 3.1.0 515 * 516 * @param WP_Comment[] $_comments An array of comments. 517 * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). 518 */ 519 $_comments = apply_filters_ref_array( 'the_comments', array( $_comments, &$this ) ); 520 521 // Convert to WP_Comment instances. 522 $comments = array_map( 'get_comment', $_comments ); 523 524 if ( $this->query_vars['hierarchical'] ) { 525 $comments = $this->fill_descendants( $comments ); 526 } 527 528 $this->comments = $comments; 529 return $this->comments; 530 } 531 532 /** 533 * Used internally to get a list of comment IDs matching the query vars. 534 * 535 * @since 4.4.0 536 * 537 * @global wpdb $wpdb WordPress database abstraction object. 538 * 539 * @return int|array A single count of comment IDs if a count query. An array of comment IDs if a full query. 540 */ 541 protected function get_comment_ids() { 542 global $wpdb; 543 544 // Assemble clauses related to 'comment_approved'. 545 $approved_clauses = array(); 546 547 // 'status' accepts an array or a comma-separated string. 548 $status_clauses = array(); 549 $statuses = wp_parse_list( $this->query_vars['status'] ); 550 551 // Empty 'status' should be interpreted as 'all'. 552 if ( empty( $statuses ) ) { 553 $statuses = array( 'all' ); 554 } 555 556 // 'any' overrides other statuses. 557 if ( ! in_array( 'any', $statuses, true ) ) { 558 foreach ( $statuses as $status ) { 559 switch ( $status ) { 560 case 'hold': 561 $status_clauses[] = "comment_approved = '0'"; 562 break; 563 564 case 'approve': 565 $status_clauses[] = "comment_approved = '1'"; 566 break; 567 568 case 'all': 569 case '': 570 $status_clauses[] = "( comment_approved = '0' OR comment_approved = '1' )"; 571 break; 572 573 default: 574 $status_clauses[] = $wpdb->prepare( 'comment_approved = %s', $status ); 575 break; 576 } 577 } 578 579 if ( ! empty( $status_clauses ) ) { 580 $approved_clauses[] = '( ' . implode( ' OR ', $status_clauses ) . ' )'; 581 } 582 } 583 584 // User IDs or emails whose unapproved comments are included, regardless of $status. 585 if ( ! empty( $this->query_vars['include_unapproved'] ) ) { 586 $include_unapproved = wp_parse_list( $this->query_vars['include_unapproved'] ); 587 588 $unapproved_ids = array(); 589 $unapproved_emails = array(); 590 foreach ( $include_unapproved as $unapproved_identifier ) { 591 // Numeric values are assumed to be user IDs. 592 if ( is_numeric( $unapproved_identifier ) ) { 593 $approved_clauses[] = $wpdb->prepare( "( user_id = %d AND comment_approved = '0' )", $unapproved_identifier ); 594 } else { 595 // Otherwise we match against email addresses. 596 if ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) { 597 // Only include requested comment. 598 $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' AND {$wpdb->comments}.comment_ID = %d )", $unapproved_identifier, (int) $_GET['unapproved'] ); 599 } else { 600 // Include all of the author's unapproved comments. 601 $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier ); 602 } 603 } 604 } 605 } 606 607 // Collapse comment_approved clauses into a single OR-separated clause. 608 if ( ! empty( $approved_clauses ) ) { 609 if ( 1 === count( $approved_clauses ) ) { 610 $this->sql_clauses['where']['approved'] = $approved_clauses[0]; 611 } else { 612 $this->sql_clauses['where']['approved'] = '( ' . implode( ' OR ', $approved_clauses ) . ' )'; 613 } 614 } 615 616 $order = ( 'ASC' === strtoupper( $this->query_vars['order'] ) ) ? 'ASC' : 'DESC'; 617 618 // Disable ORDER BY with 'none', an empty array, or boolean false. 619 if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) { 620 $orderby = ''; 621 } elseif ( ! empty( $this->query_vars['orderby'] ) ) { 622 $ordersby = is_array( $this->query_vars['orderby'] ) ? 623 $this->query_vars['orderby'] : 624 preg_split( '/[,\s]/', $this->query_vars['orderby'] ); 625 626 $orderby_array = array(); 627 $found_orderby_comment_id = false; 628 foreach ( $ordersby as $_key => $_value ) { 629 if ( ! $_value ) { 630 continue; 631 } 632 633 if ( is_int( $_key ) ) { 634 $_orderby = $_value; 635 $_order = $order; 636 } else { 637 $_orderby = $_key; 638 $_order = $_value; 639 } 640 641 if ( ! $found_orderby_comment_id && in_array( $_orderby, array( 'comment_ID', 'comment__in' ), true ) ) { 642 $found_orderby_comment_id = true; 643 } 644 645 $parsed = $this->parse_orderby( $_orderby ); 646 647 if ( ! $parsed ) { 648 continue; 649 } 650 651 if ( 'comment__in' === $_orderby ) { 652 $orderby_array[] = $parsed; 653 continue; 654 } 655 656 $orderby_array[] = $parsed . ' ' . $this->parse_order( $_order ); 657 } 658 659 // If no valid clauses were found, order by comment_date_gmt. 660 if ( empty( $orderby_array ) ) { 661 $orderby_array[] = "$wpdb->comments.comment_date_gmt $order"; 662 } 663 664 // To ensure determinate sorting, always include a comment_ID clause. 665 if ( ! $found_orderby_comment_id ) { 666 $comment_id_order = ''; 667 668 // Inherit order from comment_date or comment_date_gmt, if available. 669 foreach ( $orderby_array as $orderby_clause ) { 670 if ( preg_match( '/comment_date(?:_gmt)*\ (ASC|DESC)/', $orderby_clause, $match ) ) { 671 $comment_id_order = $match[1]; 672 break; 673 } 674 } 675 676 // If no date-related order is available, use the date from the first available clause. 677 if ( ! $comment_id_order ) { 678 foreach ( $orderby_array as $orderby_clause ) { 679 if ( false !== strpos( 'ASC', $orderby_clause ) ) { 680 $comment_id_order = 'ASC'; 681 } else { 682 $comment_id_order = 'DESC'; 683 } 684 685 break; 686 } 687 } 688 689 // Default to DESC. 690 if ( ! $comment_id_order ) { 691 $comment_id_order = 'DESC'; 692 } 693 694 $orderby_array[] = "$wpdb->comments.comment_ID $comment_id_order"; 695 } 696 697 $orderby = implode( ', ', $orderby_array ); 698 } else { 699 $orderby = "$wpdb->comments.comment_date_gmt $order"; 700 } 701 702 $number = absint( $this->query_vars['number'] ); 703 $offset = absint( $this->query_vars['offset'] ); 704 $paged = absint( $this->query_vars['paged'] ); 705 $limits = ''; 706 707 if ( ! empty( $number ) ) { 708 if ( $offset ) { 709 $limits = 'LIMIT ' . $offset . ',' . $number; 710 } else { 711 $limits = 'LIMIT ' . ( $number * ( $paged - 1 ) ) . ',' . $number; 712 } 713 } 714 715 if ( $this->query_vars['count'] ) { 716 $fields = 'COUNT(*)'; 717 } else { 718 $fields = "$wpdb->comments.comment_ID"; 719 } 720 721 $post_id = absint( $this->query_vars['post_id'] ); 722 if ( ! empty( $post_id ) ) { 723 $this->sql_clauses['where']['post_id'] = $wpdb->prepare( 'comment_post_ID = %d', $post_id ); 724 } 725 726 // Parse comment IDs for an IN clause. 727 if ( ! empty( $this->query_vars['comment__in'] ) ) { 728 $this->sql_clauses['where']['comment__in'] = "$wpdb->comments.comment_ID IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['comment__in'] ) ) . ' )'; 729 } 730 731 // Parse comment IDs for a NOT IN clause. 732 if ( ! empty( $this->query_vars['comment__not_in'] ) ) { 733 $this->sql_clauses['where']['comment__not_in'] = "$wpdb->comments.comment_ID NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['comment__not_in'] ) ) . ' )'; 734 } 735 736 // Parse comment parent IDs for an IN clause. 737 if ( ! empty( $this->query_vars['parent__in'] ) ) { 738 $this->sql_clauses['where']['parent__in'] = 'comment_parent IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['parent__in'] ) ) . ' )'; 739 } 740 741 // Parse comment parent IDs for a NOT IN clause. 742 if ( ! empty( $this->query_vars['parent__not_in'] ) ) { 743 $this->sql_clauses['where']['parent__not_in'] = 'comment_parent NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['parent__not_in'] ) ) . ' )'; 744 } 745 746 // Parse comment post IDs for an IN clause. 747 if ( ! empty( $this->query_vars['post__in'] ) ) { 748 $this->sql_clauses['where']['post__in'] = 'comment_post_ID IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__in'] ) ) . ' )'; 749 } 750 751 // Parse comment post IDs for a NOT IN clause. 752 if ( ! empty( $this->query_vars['post__not_in'] ) ) { 753 $this->sql_clauses['where']['post__not_in'] = 'comment_post_ID NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__not_in'] ) ) . ' )'; 754 } 755 756 if ( '' !== $this->query_vars['author_email'] ) { 757 $this->sql_clauses['where']['author_email'] = $wpdb->prepare( 'comment_author_email = %s', $this->query_vars['author_email'] ); 758 } 759 760 if ( '' !== $this->query_vars['author_url'] ) { 761 $this->sql_clauses['where']['author_url'] = $wpdb->prepare( 'comment_author_url = %s', $this->query_vars['author_url'] ); 762 } 763 764 if ( '' !== $this->query_vars['karma'] ) { 765 $this->sql_clauses['where']['karma'] = $wpdb->prepare( 'comment_karma = %d', $this->query_vars['karma'] ); 766 } 767 768 // Filtering by comment_type: 'type', 'type__in', 'type__not_in'. 769 $raw_types = array( 770 'IN' => array_merge( (array) $this->query_vars['type'], (array) $this->query_vars['type__in'] ), 771 'NOT IN' => (array) $this->query_vars['type__not_in'], 772 ); 773 774 $comment_types = array(); 775 foreach ( $raw_types as $operator => $_raw_types ) { 776 $_raw_types = array_unique( $_raw_types ); 777 778 foreach ( $_raw_types as $type ) { 779 switch ( $type ) { 780 // An empty translates to 'all', for backward compatibility. 781 case '': 782 case 'all': 783 break; 784 785 case 'comment': 786 case 'comments': 787 $comment_types[ $operator ][] = "''"; 788 $comment_types[ $operator ][] = "'comment'"; 789 break; 790 791 case 'pings': 792 $comment_types[ $operator ][] = "'pingback'"; 793 $comment_types[ $operator ][] = "'trackback'"; 794 break; 795 796 default: 797 $comment_types[ $operator ][] = $wpdb->prepare( '%s', $type ); 798 break; 799 } 800 } 801 802 if ( ! empty( $comment_types[ $operator ] ) ) { 803 $types_sql = implode( ', ', $comment_types[ $operator ] ); 804 $this->sql_clauses['where'][ 'comment_type__' . strtolower( str_replace( ' ', '_', $operator ) ) ] = "comment_type $operator ($types_sql)"; 805 } 806 } 807 808 $parent = $this->query_vars['parent']; 809 if ( $this->query_vars['hierarchical'] && ! $parent ) { 810 $parent = 0; 811 } 812 813 if ( '' !== $parent ) { 814 $this->sql_clauses['where']['parent'] = $wpdb->prepare( 'comment_parent = %d', $parent ); 815 } 816 817 if ( is_array( $this->query_vars['user_id'] ) ) { 818 $this->sql_clauses['where']['user_id'] = 'user_id IN (' . implode( ',', array_map( 'absint', $this->query_vars['user_id'] ) ) . ')'; 819 } elseif ( '' !== $this->query_vars['user_id'] ) { 820 $this->sql_clauses['where']['user_id'] = $wpdb->prepare( 'user_id = %d', $this->query_vars['user_id'] ); 821 } 822 823 // Falsey search strings are ignored. 824 if ( isset( $this->query_vars['search'] ) && strlen( $this->query_vars['search'] ) ) { 825 $search_sql = $this->get_search_sql( 826 $this->query_vars['search'], 827 array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_content' ) 828 ); 829 830 // Strip leading 'AND'. 831 $this->sql_clauses['where']['search'] = preg_replace( '/^\s*AND\s*/', '', $search_sql ); 832 } 833 834 // If any post-related query vars are passed, join the posts table. 835 $join_posts_table = false; 836 $plucked = wp_array_slice_assoc( $this->query_vars, array( 'post_author', 'post_name', 'post_parent' ) ); 837 $post_fields = array_filter( $plucked ); 838 839 if ( ! empty( $post_fields ) ) { 840 $join_posts_table = true; 841 foreach ( $post_fields as $field_name => $field_value ) { 842 // $field_value may be an array. 843 $esses = array_fill( 0, count( (array) $field_value ), '%s' ); 844 845 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare 846 $this->sql_clauses['where'][ $field_name ] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $field_value ); 847 } 848 } 849 850 // 'post_status' and 'post_type' are handled separately, due to the specialized behavior of 'any'. 851 foreach ( array( 'post_status', 'post_type' ) as $field_name ) { 852 $q_values = array(); 853 if ( ! empty( $this->query_vars[ $field_name ] ) ) { 854 $q_values = $this->query_vars[ $field_name ]; 855 if ( ! is_array( $q_values ) ) { 856 $q_values = explode( ',', $q_values ); 857 } 858 859 // 'any' will cause the query var to be ignored. 860 if ( in_array( 'any', $q_values, true ) || empty( $q_values ) ) { 861 continue; 862 } 863 864 $join_posts_table = true; 865 866 $esses = array_fill( 0, count( $q_values ), '%s' ); 867 868 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare 869 $this->sql_clauses['where'][ $field_name ] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $q_values ); 870 } 871 } 872 873 // Comment author IDs for an IN clause. 874 if ( ! empty( $this->query_vars['author__in'] ) ) { 875 $this->sql_clauses['where']['author__in'] = 'user_id IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__in'] ) ) . ' )'; 876 } 877 878 // Comment author IDs for a NOT IN clause. 879 if ( ! empty( $this->query_vars['author__not_in'] ) ) { 880 $this->sql_clauses['where']['author__not_in'] = 'user_id NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__not_in'] ) ) . ' )'; 881 } 882 883 // Post author IDs for an IN clause. 884 if ( ! empty( $this->query_vars['post_author__in'] ) ) { 885 $join_posts_table = true; 886 $this->sql_clauses['where']['post_author__in'] = 'post_author IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__in'] ) ) . ' )'; 887 } 888 889 // Post author IDs for a NOT IN clause. 890 if ( ! empty( $this->query_vars['post_author__not_in'] ) ) { 891 $join_posts_table = true; 892 $this->sql_clauses['where']['post_author__not_in'] = 'post_author NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__not_in'] ) ) . ' )'; 893 } 894 895 $join = ''; 896 $groupby = ''; 897 898 if ( $join_posts_table ) { 899 $join .= "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID"; 900 } 901 902 if ( ! empty( $this->meta_query_clauses ) ) { 903 $join .= $this->meta_query_clauses['join']; 904 905 // Strip leading 'AND'. 906 $this->sql_clauses['where']['meta_query'] = preg_replace( '/^\s*AND\s*/', '', $this->meta_query_clauses['where'] ); 907 908 if ( ! $this->query_vars['count'] ) { 909 $groupby = "{$wpdb->comments}.comment_ID"; 910 } 911 } 912 913 if ( ! empty( $this->query_vars['date_query'] ) && is_array( $this->query_vars['date_query'] ) ) { 914 $this->date_query = new WP_Date_Query( $this->query_vars['date_query'], 'comment_date' ); 915 $this->sql_clauses['where']['date_query'] = preg_replace( '/^\s*AND\s*/', '', $this->date_query->get_sql() ); 916 } 917 918 $where = implode( ' AND ', $this->sql_clauses['where'] ); 919 920 $clauses = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' ); 921 922 /** 923 * Filters the comment query clauses. 924 * 925 * @since 3.1.0 926 * 927 * @param string[] $clauses An associative array of comment query clauses. 928 * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). 929 */ 930 $clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $clauses ), &$this ) ); 931 932 $fields = isset( $clauses['fields'] ) ? $clauses['fields'] : ''; 933 $join = isset( $clauses['join'] ) ? $clauses['join'] : ''; 934 $where = isset( $clauses['where'] ) ? $clauses['where'] : ''; 935 $orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : ''; 936 $limits = isset( $clauses['limits'] ) ? $clauses['limits'] : ''; 937 $groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : ''; 938 939 $this->filtered_where_clause = $where; 940 941 if ( $where ) { 942 $where = 'WHERE ' . $where; 943 } 944 945 if ( $groupby ) { 946 $groupby = 'GROUP BY ' . $groupby; 947 } 948 949 if ( $orderby ) { 950 $orderby = "ORDER BY $orderby"; 951 } 952 953 $found_rows = ''; 954 if ( ! $this->query_vars['no_found_rows'] ) { 955 $found_rows = 'SQL_CALC_FOUND_ROWS'; 956 } 957 958 $this->sql_clauses['select'] = "SELECT $found_rows $fields"; 959 $this->sql_clauses['from'] = "FROM $wpdb->comments $join"; 960 $this->sql_clauses['groupby'] = $groupby; 961 $this->sql_clauses['orderby'] = $orderby; 962 $this->sql_clauses['limits'] = $limits; 963 964 $this->request = " 965 {$this->sql_clauses['select']} 966 {$this->sql_clauses['from']} 967 {$where} 968 {$this->sql_clauses['groupby']} 969 {$this->sql_clauses['orderby']} 970 {$this->sql_clauses['limits']} 971 "; 972 973 if ( $this->query_vars['count'] ) { 974 return (int) $wpdb->get_var( $this->request ); 975 } else { 976 $comment_ids = $wpdb->get_col( $this->request ); 977 return array_map( 'intval', $comment_ids ); 978 } 979 } 980 981 /** 982 * Populates found_comments and max_num_pages properties for the current 983 * query if the limit clause was used. 984 * 985 * @since 4.6.0 986 * 987 * @global wpdb $wpdb WordPress database abstraction object. 988 */ 989 private function set_found_comments() { 990 global $wpdb; 991 992 if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) { 993 /** 994 * Filters the query used to retrieve found comment count. 995 * 996 * @since 4.4.0 997 * 998 * @param string $found_comments_query SQL query. Default 'SELECT FOUND_ROWS()'. 999 * @param WP_Comment_Query $comment_query The `WP_Comment_Query` instance. 1000 */ 1001 $found_comments_query = apply_filters( 'found_comments_query', 'SELECT FOUND_ROWS()', $this ); 1002 1003 $this->found_comments = (int) $wpdb->get_var( $found_comments_query ); 1004 } 1005 } 1006 1007 /** 1008 * Fetch descendants for located comments. 1009 * 1010 * Instead of calling `get_children()` separately on each child comment, we do a single set of queries to fetch 1011 * the descendant trees for all matched top-level comments. 1012 * 1013 * @since 4.4.0 1014 * 1015 * @global wpdb $wpdb WordPress database abstraction object. 1016 * 1017 * @param WP_Comment[] $comments Array of top-level comments whose descendants should be filled in. 1018 * @return array 1019 */ 1020 protected function fill_descendants( $comments ) { 1021 global $wpdb; 1022 1023 $levels = array( 1024 0 => wp_list_pluck( $comments, 'comment_ID' ), 1025 ); 1026 1027 $key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) ); 1028 $last_changed = wp_cache_get_last_changed( 'comment' ); 1029 1030 // Fetch an entire level of the descendant tree at a time. 1031 $level = 0; 1032 $exclude_keys = array( 'parent', 'parent__in', 'parent__not_in' ); 1033 do { 1034 // Parent-child relationships may be cached. Only query for those that are not. 1035 $child_ids = array(); 1036 $uncached_parent_ids = array(); 1037 $_parent_ids = $levels[ $level ]; 1038 foreach ( $_parent_ids as $parent_id ) { 1039 $cache_key = "get_comment_child_ids:$parent_id:$key:$last_changed"; 1040 $parent_child_ids = wp_cache_get( $cache_key, 'comment' ); 1041 if ( false !== $parent_child_ids ) { 1042 $child_ids = array_merge( $child_ids, $parent_child_ids ); 1043 } else { 1044 $uncached_parent_ids[] = $parent_id; 1045 } 1046 } 1047 1048 if ( $uncached_parent_ids ) { 1049 // Fetch this level of comments. 1050 $parent_query_args = $this->query_vars; 1051 foreach ( $exclude_keys as $exclude_key ) { 1052 $parent_query_args[ $exclude_key ] = ''; 1053 } 1054 $parent_query_args['parent__in'] = $uncached_parent_ids; 1055 $parent_query_args['no_found_rows'] = true; 1056 $parent_query_args['hierarchical'] = false; 1057 $parent_query_args['offset'] = 0; 1058 $parent_query_args['number'] = 0; 1059 1060 $level_comments = get_comments( $parent_query_args ); 1061 1062 // Cache parent-child relationships. 1063 $parent_map = array_fill_keys( $uncached_parent_ids, array() ); 1064 foreach ( $level_comments as $level_comment ) { 1065 $parent_map[ $level_comment->comment_parent ][] = $level_comment->comment_ID; 1066 $child_ids[] = $level_comment->comment_ID; 1067 } 1068 1069 $data = array(); 1070 foreach ( $parent_map as $parent_id => $children ) { 1071 $cache_key = "get_comment_child_ids:$parent_id:$key:$last_changed"; 1072 $data[ $cache_key ] = $children; 1073 } 1074 wp_cache_set_multiple( $data, 'comment' ); 1075 } 1076 1077 $level++; 1078 $levels[ $level ] = $child_ids; 1079 } while ( $child_ids ); 1080 1081 // Prime comment caches for non-top-level comments. 1082 $descendant_ids = array(); 1083 for ( $i = 1, $c = count( $levels ); $i < $c; $i++ ) { 1084 $descendant_ids = array_merge( $descendant_ids, $levels[ $i ] ); 1085 } 1086 1087 _prime_comment_caches( $descendant_ids, $this->query_vars['update_comment_meta_cache'] ); 1088 1089 // Assemble a flat array of all comments + descendants. 1090 $all_comments = $comments; 1091 foreach ( $descendant_ids as $descendant_id ) { 1092 $all_comments[] = get_comment( $descendant_id ); 1093 } 1094 1095 // If a threaded representation was requested, build the tree. 1096 if ( 'threaded' === $this->query_vars['hierarchical'] ) { 1097 $threaded_comments = array(); 1098 $ref = array(); 1099 foreach ( $all_comments as $k => $c ) { 1100 $_c = get_comment( $c->comment_ID ); 1101 1102 // If the comment isn't in the reference array, it goes in the top level of the thread. 1103 if ( ! isset( $ref[ $c->comment_parent ] ) ) { 1104 $threaded_comments[ $_c->comment_ID ] = $_c; 1105 $ref[ $_c->comment_ID ] = $threaded_comments[ $_c->comment_ID ]; 1106 1107 // Otherwise, set it as a child of its parent. 1108 } else { 1109 1110 $ref[ $_c->comment_parent ]->add_child( $_c ); 1111 $ref[ $_c->comment_ID ] = $ref[ $_c->comment_parent ]->get_child( $_c->comment_ID ); 1112 } 1113 } 1114 1115 // Set the 'populated_children' flag, to ensure additional database queries aren't run. 1116 foreach ( $ref as $_ref ) { 1117 $_ref->populated_children( true ); 1118 } 1119 1120 $comments = $threaded_comments; 1121 } else { 1122 $comments = $all_comments; 1123 } 1124 1125 return $comments; 1126 } 1127 1128 /** 1129 * Used internally to generate an SQL string for searching across multiple columns. 1130 * 1131 * @since 3.1.0 1132 * 1133 * @global wpdb $wpdb WordPress database abstraction object. 1134 * 1135 * @param string $search Search string. 1136 * @param string[] $columns Array of columns to search. 1137 * @return string Search SQL. 1138 */ 1139 protected function get_search_sql( $search, $columns ) { 1140 global $wpdb; 1141 1142 $like = '%' . $wpdb->esc_like( $search ) . '%'; 1143 1144 $searches = array(); 1145 foreach ( $columns as $column ) { 1146 $searches[] = $wpdb->prepare( "$column LIKE %s", $like ); 1147 } 1148 1149 return ' AND (' . implode( ' OR ', $searches ) . ')'; 1150 } 1151 1152 /** 1153 * Parse and sanitize 'orderby' keys passed to the comment query. 1154 * 1155 * @since 4.2.0 1156 * 1157 * @global wpdb $wpdb WordPress database abstraction object. 1158 * 1159 * @param string $orderby Alias for the field to order by. 1160 * @return string|false Value to used in the ORDER clause. False otherwise. 1161 */ 1162 protected function parse_orderby( $orderby ) { 1163 global $wpdb; 1164 1165 $allowed_keys = array( 1166 'comment_agent', 1167 'comment_approved', 1168 'comment_author', 1169 'comment_author_email', 1170 'comment_author_IP', 1171 'comment_author_url', 1172 'comment_content', 1173 'comment_date', 1174 'comment_date_gmt', 1175 'comment_ID', 1176 'comment_karma', 1177 'comment_parent', 1178 'comment_post_ID', 1179 'comment_type', 1180 'user_id', 1181 ); 1182 1183 if ( ! empty( $this->query_vars['meta_key'] ) ) { 1184 $allowed_keys[] = $this->query_vars['meta_key']; 1185 $allowed_keys[] = 'meta_value'; 1186 $allowed_keys[] = 'meta_value_num'; 1187 } 1188 1189 $meta_query_clauses = $this->meta_query->get_clauses(); 1190 if ( $meta_query_clauses ) { 1191 $allowed_keys = array_merge( $allowed_keys, array_keys( $meta_query_clauses ) ); 1192 } 1193 1194 $parsed = false; 1195 if ( $this->query_vars['meta_key'] === $orderby || 'meta_value' === $orderby ) { 1196 $parsed = "$wpdb->commentmeta.meta_value"; 1197 } elseif ( 'meta_value_num' === $orderby ) { 1198 $parsed = "$wpdb->commentmeta.meta_value+0"; 1199 } elseif ( 'comment__in' === $orderby ) { 1200 $comment__in = implode( ',', array_map( 'absint', $this->query_vars['comment__in'] ) ); 1201 $parsed = "FIELD( {$wpdb->comments}.comment_ID, $comment__in )"; 1202 } elseif ( in_array( $orderby, $allowed_keys, true ) ) { 1203 1204 if ( isset( $meta_query_clauses[ $orderby ] ) ) { 1205 $meta_clause = $meta_query_clauses[ $orderby ]; 1206 $parsed = sprintf( 'CAST(%s.meta_value AS %s)', esc_sql( $meta_clause['alias'] ), esc_sql( $meta_clause['cast'] ) ); 1207 } else { 1208 $parsed = "$wpdb->comments.$orderby"; 1209 } 1210 } 1211 1212 return $parsed; 1213 } 1214 1215 /** 1216 * Parse an 'order' query variable and cast it to ASC or DESC as necessary. 1217 * 1218 * @since 4.2.0 1219 * 1220 * @param string $order The 'order' query variable. 1221 * @return string The sanitized 'order' query variable. 1222 */ 1223 protected function parse_order( $order ) { 1224 if ( ! is_string( $order ) || empty( $order ) ) { 1225 return 'DESC'; 1226 } 1227 1228 if ( 'ASC' === strtoupper( $order ) ) { 1229 return 'ASC'; 1230 } else { 1231 return 'DESC'; 1232 } 1233 } 1234 }
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| Generated: Sat Nov 23 01:00:02 2024 | Cross-referenced by PHPXref 0.7.1 |