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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 #[AllowDynamicProperties] 18 class WP_Comment_Query { 19 20 /** 21 * SQL for database query. 22 * 23 * @since 4.0.1 24 * @var string 25 */ 26 public $request; 27 28 /** 29 * Metadata query container 30 * 31 * @since 3.5.0 32 * @var WP_Meta_Query A meta query instance. 33 */ 34 public $meta_query = false; 35 36 /** 37 * Metadata query clauses. 38 * 39 * @since 4.4.0 40 * @var array 41 */ 42 protected $meta_query_clauses; 43 44 /** 45 * SQL query clauses. 46 * 47 * @since 4.4.0 48 * @var array 49 */ 50 protected $sql_clauses = array( 51 'select' => '', 52 'from' => '', 53 'where' => array(), 54 'groupby' => '', 55 'orderby' => '', 56 'limits' => '', 57 ); 58 59 /** 60 * SQL WHERE clause. 61 * 62 * Stored after the {@see 'comments_clauses'} filter is run on the compiled WHERE sub-clauses. 63 * 64 * @since 4.4.2 65 * @var string 66 */ 67 protected $filtered_where_clause; 68 69 /** 70 * Date query container 71 * 72 * @since 3.7.0 73 * @var WP_Date_Query A date query instance. 74 */ 75 public $date_query = false; 76 77 /** 78 * Query vars set by the user. 79 * 80 * @since 3.1.0 81 * @var array 82 */ 83 public $query_vars; 84 85 /** 86 * Default values for query vars. 87 * 88 * @since 4.2.0 89 * @var array 90 */ 91 public $query_var_defaults; 92 93 /** 94 * List of comments located by the query. 95 * 96 * @since 4.0.0 97 * @var int[]|WP_Comment[] 98 */ 99 public $comments; 100 101 /** 102 * The amount of found comments for the current query. 103 * 104 * @since 4.4.0 105 * @var int 106 */ 107 public $found_comments = 0; 108 109 /** 110 * The number of pages. 111 * 112 * @since 4.4.0 113 * @var int 114 */ 115 public $max_num_pages = 0; 116 117 /** 118 * Make private/protected methods readable for backward compatibility. 119 * 120 * @since 4.0.0 121 * 122 * @param string $name Method to call. 123 * @param array $arguments Arguments to pass when calling. 124 * @return mixed|false Return value of the callback, false otherwise. 125 */ 126 public function __call( $name, $arguments ) { 127 if ( 'get_search_sql' === $name ) { 128 return $this->get_search_sql( ...$arguments ); 129 } 130 return false; 131 } 132 133 /** 134 * Constructor. 135 * 136 * Sets up the comment query, based on the query vars passed. 137 * 138 * @since 4.2.0 139 * @since 4.4.0 `$parent__in` and `$parent__not_in` were added. 140 * @since 4.4.0 Order by `comment__in` was added. `$update_comment_meta_cache`, `$no_found_rows`, 141 * `$hierarchical`, and `$update_comment_post_cache` were added. 142 * @since 4.5.0 Introduced the `$author_url` argument. 143 * @since 4.6.0 Introduced the `$cache_domain` argument. 144 * @since 4.9.0 Introduced the `$paged` argument. 145 * @since 5.1.0 Introduced the `$meta_compare_key` argument. 146 * @since 5.3.0 Introduced the `$meta_type_key` argument. 147 * 148 * @param string|array $query { 149 * Optional. Array or query string of comment query parameters. Default empty. 150 * 151 * @type string $author_email Comment author email address. Default empty. 152 * @type string $author_url Comment author URL. Default empty. 153 * @type int[] $author__in Array of author IDs to include comments for. Default empty. 154 * @type int[] $author__not_in Array of author IDs to exclude comments for. Default empty. 155 * @type int[] $comment__in Array of comment IDs to include. Default empty. 156 * @type int[] $comment__not_in Array of comment IDs to exclude. Default empty. 157 * @type bool $count Whether to return a comment count (true) or array of 158 * comment objects (false). Default false. 159 * @type array $date_query Date query clauses to limit comments by. See WP_Date_Query. 160 * Default null. 161 * @type string $fields Comment fields to return. Accepts 'ids' for comment IDs 162 * only or empty for all fields. Default empty. 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 Limit results to those affiliated with a given post ID. 227 * Default 0. 228 * @type int[] $post__in Array of post IDs to include affiliated comments for. 229 * Default empty. 230 * @type int[] $post__not_in Array of post IDs to exclude affiliated comments for. 231 * Default empty. 232 * @type int $post_author Post author ID to limit results by. Default empty. 233 * @type string|string[] $post_status Post status or array of post statuses to retrieve 234 * affiliated comments for. Pass 'any' to match any value. 235 * Default empty. 236 * @type string|string[] $post_type Post type or array of post types to retrieve affiliated 237 * comments for. Pass 'any' to match any value. Default empty. 238 * @type string $post_name Post name to retrieve affiliated comments for. 239 * Default empty. 240 * @type int $post_parent Post parent ID to retrieve affiliated comments for. 241 * Default empty. 242 * @type string $search Search term(s) to retrieve matching comments for. 243 * Default empty. 244 * @type string|array $status Comment statuses to limit results by. Accepts an array 245 * or space/comma-separated list of 'hold' (`comment_status=0`), 246 * 'approve' (`comment_status=1`), 'all', or a custom 247 * comment status. Default 'all'. 248 * @type string|string[] $type Include comments of a given type, or array of types. 249 * Accepts 'comment', 'pings' (includes 'pingback' and 250 * 'trackback'), or any custom type string. Default empty. 251 * @type string[] $type__in Include comments from a given array of comment types. 252 * Default empty. 253 * @type string[] $type__not_in Exclude comments from a given array of comment types. 254 * Default empty. 255 * @type int $user_id Include comments for a specific user ID. Default empty. 256 * @type bool|string $hierarchical Whether to include comment descendants in the results. 257 * - 'threaded' returns a tree, with each comment's children 258 * stored in a `children` property on the `WP_Comment` object. 259 * - 'flat' returns a flat array of found comments plus 260 * their children. 261 * - Boolean `false` leaves out descendants. 262 * The parameter is ignored (forced to `false`) when 263 * `$fields` is 'ids' or 'counts'. Accepts 'threaded', 264 * 'flat', or false. Default: false. 265 * @type string $cache_domain Unique cache key to be produced when this query is stored in 266 * an object cache. Default is 'core'. 267 * @type bool $update_comment_meta_cache Whether to prime the metadata cache for found comments. 268 * Default true. 269 * @type bool $update_comment_post_cache Whether to prime the cache for comment posts. 270 * Default false. 271 * } 272 */ 273 public function __construct( $query = '' ) { 274 $this->query_var_defaults = array( 275 'author_email' => '', 276 'author_url' => '', 277 'author__in' => '', 278 'author__not_in' => '', 279 'include_unapproved' => '', 280 'fields' => '', 281 'ID' => '', 282 'comment__in' => '', 283 'comment__not_in' => '', 284 'karma' => '', 285 'number' => '', 286 'offset' => '', 287 'no_found_rows' => true, 288 'orderby' => '', 289 'order' => 'DESC', 290 'paged' => 1, 291 'parent' => '', 292 'parent__in' => '', 293 'parent__not_in' => '', 294 'post_author__in' => '', 295 'post_author__not_in' => '', 296 'post_ID' => '', 297 'post_id' => 0, 298 'post__in' => '', 299 'post__not_in' => '', 300 'post_author' => '', 301 'post_name' => '', 302 'post_parent' => '', 303 'post_status' => '', 304 'post_type' => '', 305 'status' => 'all', 306 'type' => '', 307 'type__in' => '', 308 'type__not_in' => '', 309 'user_id' => '', 310 'search' => '', 311 'count' => false, 312 'meta_key' => '', 313 'meta_value' => '', 314 'meta_query' => '', 315 'date_query' => null, // See WP_Date_Query. 316 'hierarchical' => false, 317 'cache_domain' => 'core', 318 'update_comment_meta_cache' => true, 319 'update_comment_post_cache' => false, 320 ); 321 322 if ( ! empty( $query ) ) { 323 $this->query( $query ); 324 } 325 } 326 327 /** 328 * Parse arguments passed to the comment query with default query parameters. 329 * 330 * @since 4.2.0 Extracted from WP_Comment_Query::query(). 331 * 332 * @param string|array $query WP_Comment_Query arguments. See WP_Comment_Query::__construct() for accepted arguments. 333 */ 334 public function parse_query( $query = '' ) { 335 if ( empty( $query ) ) { 336 $query = $this->query_vars; 337 } 338 339 $this->query_vars = wp_parse_args( $query, $this->query_var_defaults ); 340 341 /** 342 * Fires after the comment query vars have been parsed. 343 * 344 * @since 4.2.0 345 * 346 * @param WP_Comment_Query $query The WP_Comment_Query instance (passed by reference). 347 */ 348 do_action_ref_array( 'parse_comment_query', array( &$this ) ); 349 } 350 351 /** 352 * Sets up the WordPress query for retrieving comments. 353 * 354 * @since 3.1.0 355 * @since 4.1.0 Introduced 'comment__in', 'comment__not_in', 'post_author__in', 356 * 'post_author__not_in', 'author__in', 'author__not_in', 'post__in', 357 * 'post__not_in', 'include_unapproved', 'type__in', and 'type__not_in' 358 * arguments to $query_vars. 359 * @since 4.2.0 Moved parsing to WP_Comment_Query::parse_query(). 360 * 361 * @param string|array $query Array or URL query string of parameters. 362 * @return array|int List of comments, or number of comments when 'count' is passed as a query var. 363 */ 364 public function query( $query ) { 365 $this->query_vars = wp_parse_args( $query ); 366 return $this->get_comments(); 367 } 368 369 /** 370 * Get a list of comments matching the query vars. 371 * 372 * @since 4.2.0 373 * 374 * @global wpdb $wpdb WordPress database abstraction object. 375 * 376 * @return int|int[]|WP_Comment[] List of comments or number of found comments if `$count` argument is true. 377 */ 378 public function get_comments() { 379 global $wpdb; 380 381 $this->parse_query(); 382 383 // Parse meta query. 384 $this->meta_query = new WP_Meta_Query(); 385 $this->meta_query->parse_query_vars( $this->query_vars ); 386 387 /** 388 * Fires before comments are retrieved. 389 * 390 * @since 3.1.0 391 * 392 * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). 393 */ 394 do_action_ref_array( 'pre_get_comments', array( &$this ) ); 395 396 // Reparse query vars, in case they were modified in a 'pre_get_comments' callback. 397 $this->meta_query->parse_query_vars( $this->query_vars ); 398 if ( ! empty( $this->meta_query->queries ) ) { 399 $this->meta_query_clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this ); 400 } 401 402 $comment_data = null; 403 404 /** 405 * Filters the comments data before the query takes place. 406 * 407 * Return a non-null value to bypass WordPress' default comment queries. 408 * 409 * The expected return type from this filter depends on the value passed 410 * in the request query vars: 411 * - When `$this->query_vars['count']` is set, the filter should return 412 * the comment count as an integer. 413 * - When `'ids' === $this->query_vars['fields']`, the filter should return 414 * an array of comment IDs. 415 * - Otherwise the filter should return an array of WP_Comment objects. 416 * 417 * Note that if the filter returns an array of comment data, it will be assigned 418 * to the `comments` property of the current WP_Comment_Query instance. 419 * 420 * Filtering functions that require pagination information are encouraged to set 421 * the `found_comments` and `max_num_pages` properties of the WP_Comment_Query object, 422 * passed to the filter by reference. If WP_Comment_Query does not perform a database 423 * query, it will not have enough information to generate these values itself. 424 * 425 * @since 5.3.0 426 * @since 5.6.0 The returned array of comment data is assigned to the `comments` property 427 * of the current WP_Comment_Query instance. 428 * 429 * @param array|int|null $comment_data Return an array of comment data to short-circuit WP's comment query, 430 * the comment count as an integer if `$this->query_vars['count']` is set, 431 * or null to allow WP to run its normal queries. 432 * @param WP_Comment_Query $query The WP_Comment_Query instance, passed by reference. 433 */ 434 $comment_data = apply_filters_ref_array( 'comments_pre_query', array( $comment_data, &$this ) ); 435 436 if ( null !== $comment_data ) { 437 if ( is_array( $comment_data ) && ! $this->query_vars['count'] ) { 438 $this->comments = $comment_data; 439 } 440 441 return $comment_data; 442 } 443 444 /* 445 * Only use the args defined in the query_var_defaults to compute the key, 446 * but ignore 'fields', 'update_comment_meta_cache', 'update_comment_post_cache' which does not affect query results. 447 */ 448 $_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ); 449 unset( $_args['fields'], $_args['update_comment_meta_cache'], $_args['update_comment_post_cache'] ); 450 451 $key = md5( serialize( $_args ) ); 452 $last_changed = wp_cache_get_last_changed( 'comment' ); 453 454 $cache_key = "get_comments:$key:$last_changed"; 455 $cache_value = wp_cache_get( $cache_key, 'comment-queries' ); 456 if ( false === $cache_value ) { 457 $comment_ids = $this->get_comment_ids(); 458 if ( $comment_ids ) { 459 $this->set_found_comments(); 460 } 461 462 $cache_value = array( 463 'comment_ids' => $comment_ids, 464 'found_comments' => $this->found_comments, 465 ); 466 wp_cache_add( $cache_key, $cache_value, 'comment-queries' ); 467 } else { 468 $comment_ids = $cache_value['comment_ids']; 469 $this->found_comments = $cache_value['found_comments']; 470 } 471 472 if ( $this->found_comments && $this->query_vars['number'] ) { 473 $this->max_num_pages = (int) ceil( $this->found_comments / $this->query_vars['number'] ); 474 } 475 476 // If querying for a count only, there's nothing more to do. 477 if ( $this->query_vars['count'] ) { 478 // $comment_ids is actually a count in this case. 479 return (int) $comment_ids; 480 } 481 482 $comment_ids = array_map( 'intval', $comment_ids ); 483 484 if ( $this->query_vars['update_comment_meta_cache'] ) { 485 wp_lazyload_comment_meta( $comment_ids ); 486 } 487 488 if ( 'ids' === $this->query_vars['fields'] ) { 489 $this->comments = $comment_ids; 490 return $this->comments; 491 } 492 493 _prime_comment_caches( $comment_ids, false ); 494 495 // Fetch full comment objects from the primed cache. 496 $_comments = array(); 497 foreach ( $comment_ids as $comment_id ) { 498 $_comment = get_comment( $comment_id ); 499 if ( $_comment ) { 500 $_comments[] = $_comment; 501 } 502 } 503 504 // Prime comment post caches. 505 if ( $this->query_vars['update_comment_post_cache'] ) { 506 $comment_post_ids = array(); 507 foreach ( $_comments as $_comment ) { 508 $comment_post_ids[] = $_comment->comment_post_ID; 509 } 510 511 _prime_post_caches( $comment_post_ids, false, false ); 512 } 513 514 /** 515 * Filters the comment query results. 516 * 517 * @since 3.1.0 518 * 519 * @param WP_Comment[] $_comments An array of comments. 520 * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). 521 */ 522 $_comments = apply_filters_ref_array( 'the_comments', array( $_comments, &$this ) ); 523 524 // Convert to WP_Comment instances. 525 $comments = array_map( 'get_comment', $_comments ); 526 527 if ( $this->query_vars['hierarchical'] ) { 528 $comments = $this->fill_descendants( $comments ); 529 } 530 531 $this->comments = $comments; 532 return $this->comments; 533 } 534 535 /** 536 * Used internally to get a list of comment IDs matching the query vars. 537 * 538 * @since 4.4.0 539 * 540 * @global wpdb $wpdb WordPress database abstraction object. 541 * 542 * @return int|array A single count of comment IDs if a count query. An array of comment IDs if a full query. 543 */ 544 protected function get_comment_ids() { 545 global $wpdb; 546 547 // Assemble clauses related to 'comment_approved'. 548 $approved_clauses = array(); 549 550 // 'status' accepts an array or a comma-separated string. 551 $status_clauses = array(); 552 $statuses = wp_parse_list( $this->query_vars['status'] ); 553 554 // Empty 'status' should be interpreted as 'all'. 555 if ( empty( $statuses ) ) { 556 $statuses = array( 'all' ); 557 } 558 559 // 'any' overrides other statuses. 560 if ( ! in_array( 'any', $statuses, true ) ) { 561 foreach ( $statuses as $status ) { 562 switch ( $status ) { 563 case 'hold': 564 $status_clauses[] = "comment_approved = '0'"; 565 break; 566 567 case 'approve': 568 $status_clauses[] = "comment_approved = '1'"; 569 break; 570 571 case 'all': 572 case '': 573 $status_clauses[] = "( comment_approved = '0' OR comment_approved = '1' )"; 574 break; 575 576 default: 577 $status_clauses[] = $wpdb->prepare( 'comment_approved = %s', $status ); 578 break; 579 } 580 } 581 582 if ( ! empty( $status_clauses ) ) { 583 $approved_clauses[] = '( ' . implode( ' OR ', $status_clauses ) . ' )'; 584 } 585 } 586 587 // User IDs or emails whose unapproved comments are included, regardless of $status. 588 if ( ! empty( $this->query_vars['include_unapproved'] ) ) { 589 $include_unapproved = wp_parse_list( $this->query_vars['include_unapproved'] ); 590 591 foreach ( $include_unapproved as $unapproved_identifier ) { 592 // Numeric values are assumed to be user IDs. 593 if ( is_numeric( $unapproved_identifier ) ) { 594 $approved_clauses[] = $wpdb->prepare( "( user_id = %d AND comment_approved = '0' )", $unapproved_identifier ); 595 } else { 596 // Otherwise we match against email addresses. 597 if ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) { 598 // Only include requested comment. 599 $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' AND {$wpdb->comments}.comment_ID = %d )", $unapproved_identifier, (int) $_GET['unapproved'] ); 600 } else { 601 // Include all of the author's unapproved comments. 602 $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier ); 603 } 604 } 605 } 606 } 607 608 // Collapse comment_approved clauses into a single OR-separated clause. 609 if ( ! empty( $approved_clauses ) ) { 610 if ( 1 === count( $approved_clauses ) ) { 611 $this->sql_clauses['where']['approved'] = $approved_clauses[0]; 612 } else { 613 $this->sql_clauses['where']['approved'] = '( ' . implode( ' OR ', $approved_clauses ) . ' )'; 614 } 615 } 616 617 $order = ( 'ASC' === strtoupper( $this->query_vars['order'] ) ) ? 'ASC' : 'DESC'; 618 619 // Disable ORDER BY with 'none', an empty array, or boolean false. 620 if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) { 621 $orderby = ''; 622 } elseif ( ! empty( $this->query_vars['orderby'] ) ) { 623 $ordersby = is_array( $this->query_vars['orderby'] ) ? 624 $this->query_vars['orderby'] : 625 preg_split( '/[,\s]/', $this->query_vars['orderby'] ); 626 627 $orderby_array = array(); 628 $found_orderby_comment_id = false; 629 foreach ( $ordersby as $_key => $_value ) { 630 if ( ! $_value ) { 631 continue; 632 } 633 634 if ( is_int( $_key ) ) { 635 $_orderby = $_value; 636 $_order = $order; 637 } else { 638 $_orderby = $_key; 639 $_order = $_value; 640 } 641 642 if ( ! $found_orderby_comment_id && in_array( $_orderby, array( 'comment_ID', 'comment__in' ), true ) ) { 643 $found_orderby_comment_id = true; 644 } 645 646 $parsed = $this->parse_orderby( $_orderby ); 647 648 if ( ! $parsed ) { 649 continue; 650 } 651 652 if ( 'comment__in' === $_orderby ) { 653 $orderby_array[] = $parsed; 654 continue; 655 } 656 657 $orderby_array[] = $parsed . ' ' . $this->parse_order( $_order ); 658 } 659 660 // If no valid clauses were found, order by comment_date_gmt. 661 if ( empty( $orderby_array ) ) { 662 $orderby_array[] = "$wpdb->comments.comment_date_gmt $order"; 663 } 664 665 // To ensure determinate sorting, always include a comment_ID clause. 666 if ( ! $found_orderby_comment_id ) { 667 $comment_id_order = ''; 668 669 // Inherit order from comment_date or comment_date_gmt, if available. 670 foreach ( $orderby_array as $orderby_clause ) { 671 if ( preg_match( '/comment_date(?:_gmt)*\ (ASC|DESC)/', $orderby_clause, $match ) ) { 672 $comment_id_order = $match[1]; 673 break; 674 } 675 } 676 677 // If no date-related order is available, use the date from the first available clause. 678 if ( ! $comment_id_order ) { 679 foreach ( $orderby_array as $orderby_clause ) { 680 if ( str_contains( 'ASC', $orderby_clause ) ) { 681 $comment_id_order = 'ASC'; 682 } else { 683 $comment_id_order = 'DESC'; 684 } 685 686 break; 687 } 688 } 689 690 // Default to DESC. 691 if ( ! $comment_id_order ) { 692 $comment_id_order = 'DESC'; 693 } 694 695 $orderby_array[] = "$wpdb->comments.comment_ID $comment_id_order"; 696 } 697 698 $orderby = implode( ', ', $orderby_array ); 699 } else { 700 $orderby = "$wpdb->comments.comment_date_gmt $order"; 701 } 702 703 $number = absint( $this->query_vars['number'] ); 704 $offset = absint( $this->query_vars['offset'] ); 705 $paged = absint( $this->query_vars['paged'] ); 706 $limits = ''; 707 708 if ( ! empty( $number ) ) { 709 if ( $offset ) { 710 $limits = 'LIMIT ' . $offset . ',' . $number; 711 } else { 712 $limits = 'LIMIT ' . ( $number * ( $paged - 1 ) ) . ',' . $number; 713 } 714 } 715 716 if ( $this->query_vars['count'] ) { 717 $fields = 'COUNT(*)'; 718 } else { 719 $fields = "$wpdb->comments.comment_ID"; 720 } 721 722 $post_id = absint( $this->query_vars['post_id'] ); 723 if ( ! empty( $post_id ) ) { 724 $this->sql_clauses['where']['post_id'] = $wpdb->prepare( 'comment_post_ID = %d', $post_id ); 725 } 726 727 // Parse comment IDs for an IN clause. 728 if ( ! empty( $this->query_vars['comment__in'] ) ) { 729 $this->sql_clauses['where']['comment__in'] = "$wpdb->comments.comment_ID IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['comment__in'] ) ) . ' )'; 730 } 731 732 // Parse comment IDs for a NOT IN clause. 733 if ( ! empty( $this->query_vars['comment__not_in'] ) ) { 734 $this->sql_clauses['where']['comment__not_in'] = "$wpdb->comments.comment_ID NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['comment__not_in'] ) ) . ' )'; 735 } 736 737 // Parse comment parent IDs for an IN clause. 738 if ( ! empty( $this->query_vars['parent__in'] ) ) { 739 $this->sql_clauses['where']['parent__in'] = 'comment_parent IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['parent__in'] ) ) . ' )'; 740 } 741 742 // Parse comment parent IDs for a NOT IN clause. 743 if ( ! empty( $this->query_vars['parent__not_in'] ) ) { 744 $this->sql_clauses['where']['parent__not_in'] = 'comment_parent NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['parent__not_in'] ) ) . ' )'; 745 } 746 747 // Parse comment post IDs for an IN clause. 748 if ( ! empty( $this->query_vars['post__in'] ) ) { 749 $this->sql_clauses['where']['post__in'] = 'comment_post_ID IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__in'] ) ) . ' )'; 750 } 751 752 // Parse comment post IDs for a NOT IN clause. 753 if ( ! empty( $this->query_vars['post__not_in'] ) ) { 754 $this->sql_clauses['where']['post__not_in'] = 'comment_post_ID NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__not_in'] ) ) . ' )'; 755 } 756 757 if ( '' !== $this->query_vars['author_email'] ) { 758 $this->sql_clauses['where']['author_email'] = $wpdb->prepare( 'comment_author_email = %s', $this->query_vars['author_email'] ); 759 } 760 761 if ( '' !== $this->query_vars['author_url'] ) { 762 $this->sql_clauses['where']['author_url'] = $wpdb->prepare( 'comment_author_url = %s', $this->query_vars['author_url'] ); 763 } 764 765 if ( '' !== $this->query_vars['karma'] ) { 766 $this->sql_clauses['where']['karma'] = $wpdb->prepare( 'comment_karma = %d', $this->query_vars['karma'] ); 767 } 768 769 // Filtering by comment_type: 'type', 'type__in', 'type__not_in'. 770 $raw_types = array( 771 'IN' => array_merge( (array) $this->query_vars['type'], (array) $this->query_vars['type__in'] ), 772 'NOT IN' => (array) $this->query_vars['type__not_in'], 773 ); 774 775 $comment_types = array(); 776 foreach ( $raw_types as $operator => $_raw_types ) { 777 $_raw_types = array_unique( $_raw_types ); 778 779 foreach ( $_raw_types as $type ) { 780 switch ( $type ) { 781 // An empty translates to 'all', for backward compatibility. 782 case '': 783 case 'all': 784 break; 785 786 case 'comment': 787 case 'comments': 788 $comment_types[ $operator ][] = "''"; 789 $comment_types[ $operator ][] = "'comment'"; 790 break; 791 792 case 'pings': 793 $comment_types[ $operator ][] = "'pingback'"; 794 $comment_types[ $operator ][] = "'trackback'"; 795 break; 796 797 default: 798 $comment_types[ $operator ][] = $wpdb->prepare( '%s', $type ); 799 break; 800 } 801 } 802 803 if ( ! empty( $comment_types[ $operator ] ) ) { 804 $types_sql = implode( ', ', $comment_types[ $operator ] ); 805 $this->sql_clauses['where'][ 'comment_type__' . strtolower( str_replace( ' ', '_', $operator ) ) ] = "comment_type $operator ($types_sql)"; 806 } 807 } 808 809 $parent = $this->query_vars['parent']; 810 if ( $this->query_vars['hierarchical'] && ! $parent ) { 811 $parent = 0; 812 } 813 814 if ( '' !== $parent ) { 815 $this->sql_clauses['where']['parent'] = $wpdb->prepare( 'comment_parent = %d', $parent ); 816 } 817 818 if ( is_array( $this->query_vars['user_id'] ) ) { 819 $this->sql_clauses['where']['user_id'] = 'user_id IN (' . implode( ',', array_map( 'absint', $this->query_vars['user_id'] ) ) . ')'; 820 } elseif ( '' !== $this->query_vars['user_id'] ) { 821 $this->sql_clauses['where']['user_id'] = $wpdb->prepare( 'user_id = %d', $this->query_vars['user_id'] ); 822 } 823 824 // Falsey search strings are ignored. 825 if ( isset( $this->query_vars['search'] ) && strlen( $this->query_vars['search'] ) ) { 826 $search_sql = $this->get_search_sql( 827 $this->query_vars['search'], 828 array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_content' ) 829 ); 830 831 // Strip leading 'AND'. 832 $this->sql_clauses['where']['search'] = preg_replace( '/^\s*AND\s*/', '', $search_sql ); 833 } 834 835 // If any post-related query vars are passed, join the posts table. 836 $join_posts_table = false; 837 $plucked = wp_array_slice_assoc( $this->query_vars, array( 'post_author', 'post_name', 'post_parent' ) ); 838 $post_fields = array_filter( $plucked ); 839 840 if ( ! empty( $post_fields ) ) { 841 $join_posts_table = true; 842 foreach ( $post_fields as $field_name => $field_value ) { 843 // $field_value may be an array. 844 $esses = array_fill( 0, count( (array) $field_value ), '%s' ); 845 846 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare 847 $this->sql_clauses['where'][ $field_name ] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $field_value ); 848 } 849 } 850 851 // 'post_status' and 'post_type' are handled separately, due to the specialized behavior of 'any'. 852 foreach ( array( 'post_status', 'post_type' ) as $field_name ) { 853 $q_values = array(); 854 if ( ! empty( $this->query_vars[ $field_name ] ) ) { 855 $q_values = $this->query_vars[ $field_name ]; 856 if ( ! is_array( $q_values ) ) { 857 $q_values = explode( ',', $q_values ); 858 } 859 860 // 'any' will cause the query var to be ignored. 861 if ( in_array( 'any', $q_values, true ) || empty( $q_values ) ) { 862 continue; 863 } 864 865 $join_posts_table = true; 866 867 $esses = array_fill( 0, count( $q_values ), '%s' ); 868 869 // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare 870 $this->sql_clauses['where'][ $field_name ] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $q_values ); 871 } 872 } 873 874 // Comment author IDs for an IN clause. 875 if ( ! empty( $this->query_vars['author__in'] ) ) { 876 $this->sql_clauses['where']['author__in'] = 'user_id IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__in'] ) ) . ' )'; 877 } 878 879 // Comment author IDs for a NOT IN clause. 880 if ( ! empty( $this->query_vars['author__not_in'] ) ) { 881 $this->sql_clauses['where']['author__not_in'] = 'user_id NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__not_in'] ) ) . ' )'; 882 } 883 884 // Post author IDs for an IN clause. 885 if ( ! empty( $this->query_vars['post_author__in'] ) ) { 886 $join_posts_table = true; 887 $this->sql_clauses['where']['post_author__in'] = 'post_author IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__in'] ) ) . ' )'; 888 } 889 890 // Post author IDs for a NOT IN clause. 891 if ( ! empty( $this->query_vars['post_author__not_in'] ) ) { 892 $join_posts_table = true; 893 $this->sql_clauses['where']['post_author__not_in'] = 'post_author NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__not_in'] ) ) . ' )'; 894 } 895 896 $join = ''; 897 $groupby = ''; 898 899 if ( $join_posts_table ) { 900 $join .= "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID"; 901 } 902 903 if ( ! empty( $this->meta_query_clauses ) ) { 904 $join .= $this->meta_query_clauses['join']; 905 906 // Strip leading 'AND'. 907 $this->sql_clauses['where']['meta_query'] = preg_replace( '/^\s*AND\s*/', '', $this->meta_query_clauses['where'] ); 908 909 if ( ! $this->query_vars['count'] ) { 910 $groupby = "{$wpdb->comments}.comment_ID"; 911 } 912 } 913 914 if ( ! empty( $this->query_vars['date_query'] ) && is_array( $this->query_vars['date_query'] ) ) { 915 $this->date_query = new WP_Date_Query( $this->query_vars['date_query'], 'comment_date' ); 916 917 // Strip leading 'AND'. 918 $this->sql_clauses['where']['date_query'] = preg_replace( '/^\s*AND\s*/', '', $this->date_query->get_sql() ); 919 } 920 921 $where = implode( ' AND ', $this->sql_clauses['where'] ); 922 923 $pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' ); 924 925 /** 926 * Filters the comment query clauses. 927 * 928 * @since 3.1.0 929 * 930 * @param string[] $clauses An associative array of comment query clauses. 931 * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). 932 */ 933 $clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $pieces ), &$this ) ); 934 935 $fields = isset( $clauses['fields'] ) ? $clauses['fields'] : ''; 936 $join = isset( $clauses['join'] ) ? $clauses['join'] : ''; 937 $where = isset( $clauses['where'] ) ? $clauses['where'] : ''; 938 $orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : ''; 939 $limits = isset( $clauses['limits'] ) ? $clauses['limits'] : ''; 940 $groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : ''; 941 942 $this->filtered_where_clause = $where; 943 944 if ( $where ) { 945 $where = 'WHERE ' . $where; 946 } 947 948 if ( $groupby ) { 949 $groupby = 'GROUP BY ' . $groupby; 950 } 951 952 if ( $orderby ) { 953 $orderby = "ORDER BY $orderby"; 954 } 955 956 $found_rows = ''; 957 if ( ! $this->query_vars['no_found_rows'] ) { 958 $found_rows = 'SQL_CALC_FOUND_ROWS'; 959 } 960 961 $this->sql_clauses['select'] = "SELECT $found_rows $fields"; 962 $this->sql_clauses['from'] = "FROM $wpdb->comments $join"; 963 $this->sql_clauses['groupby'] = $groupby; 964 $this->sql_clauses['orderby'] = $orderby; 965 $this->sql_clauses['limits'] = $limits; 966 967 // Beginning of the string is on a new line to prevent leading whitespace. See https://core.trac.wordpress.org/ticket/56841. 968 $this->request = 969 "{$this->sql_clauses['select']} 970 {$this->sql_clauses['from']} 971 {$where} 972 {$this->sql_clauses['groupby']} 973 {$this->sql_clauses['orderby']} 974 {$this->sql_clauses['limits']}"; 975 976 if ( $this->query_vars['count'] ) { 977 return (int) $wpdb->get_var( $this->request ); 978 } else { 979 $comment_ids = $wpdb->get_col( $this->request ); 980 return array_map( 'intval', $comment_ids ); 981 } 982 } 983 984 /** 985 * Populates found_comments and max_num_pages properties for the current 986 * query if the limit clause was used. 987 * 988 * @since 4.6.0 989 * 990 * @global wpdb $wpdb WordPress database abstraction object. 991 */ 992 private function set_found_comments() { 993 global $wpdb; 994 995 if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) { 996 /** 997 * Filters the query used to retrieve found comment count. 998 * 999 * @since 4.4.0 1000 * 1001 * @param string $found_comments_query SQL query. Default 'SELECT FOUND_ROWS()'. 1002 * @param WP_Comment_Query $comment_query The `WP_Comment_Query` instance. 1003 */ 1004 $found_comments_query = apply_filters( 'found_comments_query', 'SELECT FOUND_ROWS()', $this ); 1005 1006 $this->found_comments = (int) $wpdb->get_var( $found_comments_query ); 1007 } 1008 } 1009 1010 /** 1011 * Fetch descendants for located comments. 1012 * 1013 * Instead of calling `get_children()` separately on each child comment, we do a single set of queries to fetch 1014 * the descendant trees for all matched top-level comments. 1015 * 1016 * @since 4.4.0 1017 * 1018 * @param WP_Comment[] $comments Array of top-level comments whose descendants should be filled in. 1019 * @return array 1020 */ 1021 protected function fill_descendants( $comments ) { 1022 $levels = array( 1023 0 => wp_list_pluck( $comments, 'comment_ID' ), 1024 ); 1025 1026 $key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) ); 1027 $last_changed = wp_cache_get_last_changed( 'comment' ); 1028 1029 // Fetch an entire level of the descendant tree at a time. 1030 $level = 0; 1031 $exclude_keys = array( 'parent', 'parent__in', 'parent__not_in' ); 1032 do { 1033 // Parent-child relationships may be cached. Only query for those that are not. 1034 $child_ids = array(); 1035 $uncached_parent_ids = array(); 1036 $_parent_ids = $levels[ $level ]; 1037 if ( $_parent_ids ) { 1038 $cache_keys = array(); 1039 foreach ( $_parent_ids as $parent_id ) { 1040 $cache_keys[ $parent_id ] = "get_comment_child_ids:$parent_id:$key:$last_changed"; 1041 } 1042 $cache_data = wp_cache_get_multiple( array_values( $cache_keys ), 'comment-queries' ); 1043 foreach ( $_parent_ids as $parent_id ) { 1044 $parent_child_ids = $cache_data[ $cache_keys[ $parent_id ] ]; 1045 if ( false !== $parent_child_ids ) { 1046 $child_ids = array_merge( $child_ids, $parent_child_ids ); 1047 } else { 1048 $uncached_parent_ids[] = $parent_id; 1049 } 1050 } 1051 } 1052 1053 if ( $uncached_parent_ids ) { 1054 // Fetch this level of comments. 1055 $parent_query_args = $this->query_vars; 1056 foreach ( $exclude_keys as $exclude_key ) { 1057 $parent_query_args[ $exclude_key ] = ''; 1058 } 1059 $parent_query_args['parent__in'] = $uncached_parent_ids; 1060 $parent_query_args['no_found_rows'] = true; 1061 $parent_query_args['hierarchical'] = false; 1062 $parent_query_args['offset'] = 0; 1063 $parent_query_args['number'] = 0; 1064 1065 $level_comments = get_comments( $parent_query_args ); 1066 1067 // Cache parent-child relationships. 1068 $parent_map = array_fill_keys( $uncached_parent_ids, array() ); 1069 foreach ( $level_comments as $level_comment ) { 1070 $parent_map[ $level_comment->comment_parent ][] = $level_comment->comment_ID; 1071 $child_ids[] = $level_comment->comment_ID; 1072 } 1073 1074 $data = array(); 1075 foreach ( $parent_map as $parent_id => $children ) { 1076 $cache_key = "get_comment_child_ids:$parent_id:$key:$last_changed"; 1077 $data[ $cache_key ] = $children; 1078 } 1079 wp_cache_set_multiple( $data, 'comment-queries' ); 1080 } 1081 1082 ++$level; 1083 $levels[ $level ] = $child_ids; 1084 } while ( $child_ids ); 1085 1086 // Prime comment caches for non-top-level comments. 1087 $descendant_ids = array(); 1088 for ( $i = 1, $c = count( $levels ); $i < $c; $i++ ) { 1089 $descendant_ids = array_merge( $descendant_ids, $levels[ $i ] ); 1090 } 1091 1092 _prime_comment_caches( $descendant_ids, $this->query_vars['update_comment_meta_cache'] ); 1093 1094 // Assemble a flat array of all comments + descendants. 1095 $all_comments = $comments; 1096 foreach ( $descendant_ids as $descendant_id ) { 1097 $all_comments[] = get_comment( $descendant_id ); 1098 } 1099 1100 // If a threaded representation was requested, build the tree. 1101 if ( 'threaded' === $this->query_vars['hierarchical'] ) { 1102 $threaded_comments = array(); 1103 $ref = array(); 1104 foreach ( $all_comments as $k => $c ) { 1105 $_c = get_comment( $c->comment_ID ); 1106 1107 // If the comment isn't in the reference array, it goes in the top level of the thread. 1108 if ( ! isset( $ref[ $c->comment_parent ] ) ) { 1109 $threaded_comments[ $_c->comment_ID ] = $_c; 1110 $ref[ $_c->comment_ID ] = $threaded_comments[ $_c->comment_ID ]; 1111 1112 // Otherwise, set it as a child of its parent. 1113 } else { 1114 1115 $ref[ $_c->comment_parent ]->add_child( $_c ); 1116 $ref[ $_c->comment_ID ] = $ref[ $_c->comment_parent ]->get_child( $_c->comment_ID ); 1117 } 1118 } 1119 1120 // Set the 'populated_children' flag, to ensure additional database queries aren't run. 1121 foreach ( $ref as $_ref ) { 1122 $_ref->populated_children( true ); 1123 } 1124 1125 $comments = $threaded_comments; 1126 } else { 1127 $comments = $all_comments; 1128 } 1129 1130 return $comments; 1131 } 1132 1133 /** 1134 * Used internally to generate an SQL string for searching across multiple columns. 1135 * 1136 * @since 3.1.0 1137 * 1138 * @global wpdb $wpdb WordPress database abstraction object. 1139 * 1140 * @param string $search Search string. 1141 * @param string[] $columns Array of columns to search. 1142 * @return string Search SQL. 1143 */ 1144 protected function get_search_sql( $search, $columns ) { 1145 global $wpdb; 1146 1147 $like = '%' . $wpdb->esc_like( $search ) . '%'; 1148 1149 $searches = array(); 1150 foreach ( $columns as $column ) { 1151 $searches[] = $wpdb->prepare( "$column LIKE %s", $like ); 1152 } 1153 1154 return ' AND (' . implode( ' OR ', $searches ) . ')'; 1155 } 1156 1157 /** 1158 * Parse and sanitize 'orderby' keys passed to the comment query. 1159 * 1160 * @since 4.2.0 1161 * 1162 * @global wpdb $wpdb WordPress database abstraction object. 1163 * 1164 * @param string $orderby Alias for the field to order by. 1165 * @return string|false Value to used in the ORDER clause. False otherwise. 1166 */ 1167 protected function parse_orderby( $orderby ) { 1168 global $wpdb; 1169 1170 $allowed_keys = array( 1171 'comment_agent', 1172 'comment_approved', 1173 'comment_author', 1174 'comment_author_email', 1175 'comment_author_IP', 1176 'comment_author_url', 1177 'comment_content', 1178 'comment_date', 1179 'comment_date_gmt', 1180 'comment_ID', 1181 'comment_karma', 1182 'comment_parent', 1183 'comment_post_ID', 1184 'comment_type', 1185 'user_id', 1186 ); 1187 1188 if ( ! empty( $this->query_vars['meta_key'] ) ) { 1189 $allowed_keys[] = $this->query_vars['meta_key']; 1190 $allowed_keys[] = 'meta_value'; 1191 $allowed_keys[] = 'meta_value_num'; 1192 } 1193 1194 $meta_query_clauses = $this->meta_query->get_clauses(); 1195 if ( $meta_query_clauses ) { 1196 $allowed_keys = array_merge( $allowed_keys, array_keys( $meta_query_clauses ) ); 1197 } 1198 1199 $parsed = false; 1200 if ( $this->query_vars['meta_key'] === $orderby || 'meta_value' === $orderby ) { 1201 $parsed = "$wpdb->commentmeta.meta_value"; 1202 } elseif ( 'meta_value_num' === $orderby ) { 1203 $parsed = "$wpdb->commentmeta.meta_value+0"; 1204 } elseif ( 'comment__in' === $orderby ) { 1205 $comment__in = implode( ',', array_map( 'absint', $this->query_vars['comment__in'] ) ); 1206 $parsed = "FIELD( {$wpdb->comments}.comment_ID, $comment__in )"; 1207 } elseif ( in_array( $orderby, $allowed_keys, true ) ) { 1208 1209 if ( isset( $meta_query_clauses[ $orderby ] ) ) { 1210 $meta_clause = $meta_query_clauses[ $orderby ]; 1211 $parsed = sprintf( 'CAST(%s.meta_value AS %s)', esc_sql( $meta_clause['alias'] ), esc_sql( $meta_clause['cast'] ) ); 1212 } else { 1213 $parsed = "$wpdb->comments.$orderby"; 1214 } 1215 } 1216 1217 return $parsed; 1218 } 1219 1220 /** 1221 * Parse an 'order' query variable and cast it to ASC or DESC as necessary. 1222 * 1223 * @since 4.2.0 1224 * 1225 * @param string $order The 'order' query variable. 1226 * @return string The sanitized 'order' query variable. 1227 */ 1228 protected function parse_order( $order ) { 1229 if ( ! is_string( $order ) || empty( $order ) ) { 1230 return 'DESC'; 1231 } 1232 1233 if ( 'ASC' === strtoupper( $order ) ) { 1234 return 'ASC'; 1235 } else { 1236 return 'DESC'; 1237 } 1238 } 1239 }
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| Generated : Sat Apr 27 08:20:02 2024 | Cross-referenced by PHPXref |