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Edit File: class-wp-comment-query.php
<?php /** * Comment API: WP_Comment_Query class * * @package WordPress * @subpackage Comments * @since 4.4.0 */ /** * Core class used for querying comments. * * @since 3.1.0 * * @see WP_Comment_Query::__construct() for accepted arguments. */ #[AllowDynamicProperties] class WP_Comment_Query { /** * SQL for database query. * * @since 4.0.1 * @var string */ public $request; /** * Metadata query container * * @since 3.5.0 * @var WP_Meta_Query A meta query instance. */ public $meta_query = false; /** * Metadata query clauses. * * @since 4.4.0 * @var array */ protected $meta_query_clauses; /** * SQL query clauses. * * @since 4.4.0 * @var array */ protected $sql_clauses = array( 'select' => '', 'from' => '', 'where' => array(), 'groupby' => '', 'orderby' => '', 'limits' => '', ); /** * SQL WHERE clause. * * Stored after the {@see 'comments_clauses'} filter is run on the compiled WHERE sub-clauses. * * @since 4.4.2 * @var string */ protected $filtered_where_clause; /** * Date query container * * @since 3.7.0 * @var WP_Date_Query A date query instance. */ public $date_query = false; /** * Query vars set by the user. * * @since 3.1.0 * @var array */ public $query_vars; /** * Default values for query vars. * * @since 4.2.0 * @var array */ public $query_var_defaults; /** * List of comments located by the query. * * @since 4.0.0 * @var int[]|WP_Comment[] */ public $comments; /** * The amount of found comments for the current query. * * @since 4.4.0 * @var int */ public $found_comments = 0; /** * The number of pages. * * @since 4.4.0 * @var int */ public $max_num_pages = 0; /** * Make private/protected methods readable for backward compatibility. * * @since 4.0.0 * * @param string $name Method to call. * @param array $arguments Arguments to pass when calling. * @return mixed|false Return value of the callback, false otherwise. */ public function __call( $name, $arguments ) { if ( 'get_search_sql' === $name ) { return $this->get_search_sql( ...$arguments ); } return false; } /** * Constructor. * * Sets up the comment query, based on the query vars passed. * * @since 4.2.0 * @since 4.4.0 `$parent__in` and `$parent__not_in` were added. * @since 4.4.0 Order by `comment__in` was added. `$update_comment_meta_cache`, `$no_found_rows`, * `$hierarchical`, and `$update_comment_post_cache` were added. * @since 4.5.0 Introduced the `$author_url` argument. * @since 4.6.0 Introduced the `$cache_domain` argument. * @since 4.9.0 Introduced the `$paged` argument. * @since 5.1.0 Introduced the `$meta_compare_key` argument. * @since 5.3.0 Introduced the `$meta_type_key` argument. * * @param string|array $query { * Optional. Array or query string of comment query parameters. Default empty. * * @type string $author_email Comment author email address. Default empty. * @type string $author_url Comment author URL. Default empty. * @type int[] $author__in Array of author IDs to include comments for. Default empty. * @type int[] $author__not_in Array of author IDs to exclude comments for. Default empty. * @type int[] $comment__in Array of comment IDs to include. Default empty. * @type int[] $comment__not_in Array of comment IDs to exclude. Default empty. * @type bool $count Whether to return a comment count (true) or array of * comment objects (false). Default false. * @type array $date_query Date query clauses to limit comments by. See WP_Date_Query. * Default null. * @type string $fields Comment fields to return. Accepts 'ids' for comment IDs * only or empty for all fields. Default empty. * @type array $include_unapproved Array of IDs or email addresses of users whose unapproved * comments will be returned by the query regardless of * `$status`. Default empty. * @type int $karma Karma score to retrieve matching comments for. * Default empty. * @type string|string[] $meta_key Meta key or keys to filter by. * @type string|string[] $meta_value Meta value or values to filter by. * @type string $meta_compare MySQL operator used for comparing the meta value. * See WP_Meta_Query::__construct() for accepted values and default value. * @type string $meta_compare_key MySQL operator used for comparing the meta key. * See WP_Meta_Query::__construct() for accepted values and default value. * @type string $meta_type MySQL data type that the meta_value column will be CAST to for comparisons. * See WP_Meta_Query::__construct() for accepted values and default value. * @type string $meta_type_key MySQL data type that the meta_key column will be CAST to for comparisons. * See WP_Meta_Query::__construct() for accepted values and default value. * @type array $meta_query An associative array of WP_Meta_Query arguments. * See WP_Meta_Query::__construct() for accepted values. * @type int $number Maximum number of comments to retrieve. * Default empty (no limit). * @type int $paged When used with `$number`, defines the page of results to return. * When used with `$offset`, `$offset` takes precedence. Default 1. * @type int $offset Number of comments to offset the query. Used to build * LIMIT clause. Default 0. * @type bool $no_found_rows Whether to disable the `SQL_CALC_FOUND_ROWS` query. * Default: true. * @type string|array $orderby Comment status or array of statuses. To use 'meta_value' * or 'meta_value_num', `$meta_key` must also be defined. * To sort by a specific `$meta_query` clause, use that * clause's array key. Accepts: * - 'comment_agent' * - 'comment_approved' * - 'comment_author' * - 'comment_author_email' * - 'comment_author_IP' * - 'comment_author_url' * - 'comment_content' * - 'comment_date' * - 'comment_date_gmt' * - 'comment_ID' * - 'comment_karma' * - 'comment_parent' * - 'comment_post_ID' * - 'comment_type' * - 'user_id' * - 'comment__in' * - 'meta_value' * - 'meta_value_num' * - The value of `$meta_key` * - The array keys of `$meta_query` * - false, an empty array, or 'none' to disable `ORDER BY` clause. * Default: 'comment_date_gmt'. * @type string $order How to order retrieved comments. Accepts 'ASC', 'DESC'. * Default: 'DESC'. * @type int $parent Parent ID of comment to retrieve children of. * Default empty. * @type int[] $parent__in Array of parent IDs of comments to retrieve children for. * Default empty. * @type int[] $parent__not_in Array of parent IDs of comments *not* to retrieve * children for. Default empty. * @type int[] $post_author__in Array of author IDs to retrieve comments for. * Default empty. * @type int[] $post_author__not_in Array of author IDs *not* to retrieve comments for. * Default empty. * @type int $post_id Limit results to those affiliated with a given post ID. * Default 0. * @type int[] $post__in Array of post IDs to include affiliated comments for. * Default empty. * @type int[] $post__not_in Array of post IDs to exclude affiliated comments for. * Default empty. * @type int $post_author Post author ID to limit results by. Default empty. * @type string|string[] $post_status Post status or array of post statuses to retrieve * affiliated comments for. Pass 'any' to match any value. * Default empty. * @type string|string[] $post_type Post type or array of post types to retrieve affiliated * comments for. Pass 'any' to match any value. Default empty. * @type string $post_name Post name to retrieve affiliated comments for. * Default empty. * @type int $post_parent Post parent ID to retrieve affiliated comments for. * Default empty. * @type string $search Search term(s) to retrieve matching comments for. * Default empty. * @type string|array $status Comment statuses to limit results by. Accepts an array * or space/comma-separated list of 'hold' (`comment_status=0`), * 'approve' (`comment_status=1`), 'all', or a custom * comment status. Default 'all'. * @type string|string[] $type Include comments of a given type, or array of types. * Accepts 'comment', 'pings' (includes 'pingback' and * 'trackback'), or any custom type string. Default empty. * @type string[] $type__in Include comments from a given array of comment types. * Default empty. * @type string[] $type__not_in Exclude comments from a given array of comment types. * Default empty. * @type int $user_id Include comments for a specific user ID. Default empty. * @type bool|string $hierarchical Whether to include comment descendants in the results. * - 'threaded' returns a tree, with each comment's children * stored in a `children` property on the `WP_Comment` object. * - 'flat' returns a flat array of found comments plus * their children. * - Boolean `false` leaves out descendants. * The parameter is ignored (forced to `false`) when * `$fields` is 'ids' or 'counts'. Accepts 'threaded', * 'flat', or false. Default: false. * @type string $cache_domain Unique cache key to be produced when this query is stored in * an object cache. Default is 'core'. * @type bool $update_comment_meta_cache Whether to prime the metadata cache for found comments. * Default true. * @type bool $update_comment_post_cache Whether to prime the cache for comment posts. * Default false. * } */ public function __construct( $query = '' ) { $this->query_var_defaults = array( 'author_email' => '', 'author_url' => '', 'author__in' => '', 'author__not_in' => '', 'include_unapproved' => '', 'fields' => '', 'ID' => '', 'comment__in' => '', 'comment__not_in' => '', 'karma' => '', 'number' => '', 'offset' => '', 'no_found_rows' => true, 'orderby' => '', 'order' => 'DESC', 'paged' => 1, 'parent' => '', 'parent__in' => '', 'parent__not_in' => '', 'post_author__in' => '', 'post_author__not_in' => '', 'post_ID' => '', 'post_id' => 0, 'post__in' => '', 'post__not_in' => '', 'post_author' => '', 'post_name' => '', 'post_parent' => '', 'post_status' => '', 'post_type' => '', 'status' => 'all', 'type' => '', 'type__in' => '', 'type__not_in' => '', 'user_id' => '', 'search' => '', 'count' => false, 'meta_key' => '', 'meta_value' => '', 'meta_query' => '', 'date_query' => null, // See WP_Date_Query. 'hierarchical' => false, 'cache_domain' => 'core', 'update_comment_meta_cache' => true, 'update_comment_post_cache' => false, ); if ( ! empty( $query ) ) { $this->query( $query ); } } /** * Parse arguments passed to the comment query with default query parameters. * * @since 4.2.0 Extracted from WP_Comment_Query::query(). * * @param string|array $query WP_Comment_Query arguments. See WP_Comment_Query::__construct() for accepted arguments. */ public function parse_query( $query = '' ) { if ( empty( $query ) ) { $query = $this->query_vars; } $this->query_vars = wp_parse_args( $query, $this->query_var_defaults ); /** * Fires after the comment query vars have been parsed. * * @since 4.2.0 * * @param WP_Comment_Query $query The WP_Comment_Query instance (passed by reference). */ do_action_ref_array( 'parse_comment_query', array( &$this ) ); } /** * Sets up the WordPress query for retrieving comments. * * @since 3.1.0 * @since 4.1.0 Introduced 'comment__in', 'comment__not_in', 'post_author__in', * 'post_author__not_in', 'author__in', 'author__not_in', 'post__in', * 'post__not_in', 'include_unapproved', 'type__in', and 'type__not_in' * arguments to $query_vars. * @since 4.2.0 Moved parsing to WP_Comment_Query::parse_query(). * * @param string|array $query Array or URL query string of parameters. * @return array|int List of comments, or number of comments when 'count' is passed as a query var. */ public function query( $query ) { $this->query_vars = wp_parse_args( $query ); return $this->get_comments(); } /** * Get a list of comments matching the query vars. * * @since 4.2.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @return int|int[]|WP_Comment[] List of comments or number of found comments if `$count` argument is true. */ public function get_comments() { global $wpdb; $this->parse_query(); // Parse meta query. $this->meta_query = new WP_Meta_Query(); $this->meta_query->parse_query_vars( $this->query_vars ); /** * Fires before comments are retrieved. * * @since 3.1.0 * * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). */ do_action_ref_array( 'pre_get_comments', array( &$this ) ); // Reparse query vars, in case they were modified in a 'pre_get_comments' callback. $this->meta_query->parse_query_vars( $this->query_vars ); if ( ! empty( $this->meta_query->queries ) ) { $this->meta_query_clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this ); } $comment_data = null; /** * Filters the comments data before the query takes place. * * Return a non-null value to bypass WordPress' default comment queries. * * The expected return type from this filter depends on the value passed * in the request query vars: * - When `$this->query_vars['count']` is set, the filter should return * the comment count as an integer. * - When `'ids' === $this->query_vars['fields']`, the filter should return * an array of comment IDs. * - Otherwise the filter should return an array of WP_Comment objects. * * Note that if the filter returns an array of comment data, it will be assigned * to the `comments` property of the current WP_Comment_Query instance. * * Filtering functions that require pagination information are encouraged to set * the `found_comments` and `max_num_pages` properties of the WP_Comment_Query object, * passed to the filter by reference. If WP_Comment_Query does not perform a database * query, it will not have enough information to generate these values itself. * * @since 5.3.0 * @since 5.6.0 The returned array of comment data is assigned to the `comments` property * of the current WP_Comment_Query instance. * * @param array|int|null $comment_data Return an array of comment data to short-circuit WP's comment query, * the comment count as an integer if `$this->query_vars['count']` is set, * or null to allow WP to run its normal queries. * @param WP_Comment_Query $query The WP_Comment_Query instance, passed by reference. */ $comment_data = apply_filters_ref_array( 'comments_pre_query', array( $comment_data, &$this ) ); if ( null !== $comment_data ) { if ( is_array( $comment_data ) && ! $this->query_vars['count'] ) { $this->comments = $comment_data; } return $comment_data; } /* * Only use the args defined in the query_var_defaults to compute the key, * but ignore 'fields', 'update_comment_meta_cache', 'update_comment_post_cache' which does not affect query results. */ $_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ); unset( $_args['fields'], $_args['update_comment_meta_cache'], $_args['update_comment_post_cache'] ); $key = md5( serialize( $_args ) ); $last_changed = wp_cache_get_last_changed( 'comment' ); $cache_key = "get_comments:$key"; $cache_value = wp_cache_get_salted( $cache_key, 'comment-queries', $last_changed ); if ( false === $cache_value ) { $comment_ids = $this->get_comment_ids(); if ( $comment_ids ) { $this->set_found_comments(); } $cache_value = array( 'comment_ids' => $comment_ids, 'found_comments' => $this->found_comments, ); wp_cache_set_salted( $cache_key, $cache_value, 'comment-queries', $last_changed ); } else { $comment_ids = $cache_value['comment_ids']; $this->found_comments = $cache_value['found_comments']; } if ( $this->found_comments && $this->query_vars['number'] ) { $this->max_num_pages = (int) ceil( $this->found_comments / $this->query_vars['number'] ); } // If querying for a count only, there's nothing more to do. if ( $this->query_vars['count'] ) { // $comment_ids is actually a count in this case. return (int) $comment_ids; } $comment_ids = array_map( 'intval', $comment_ids ); if ( $this->query_vars['update_comment_meta_cache'] ) { wp_lazyload_comment_meta( $comment_ids ); } if ( 'ids' === $this->query_vars['fields'] ) { $this->comments = $comment_ids; return $this->comments; } _prime_comment_caches( $comment_ids, false ); // Fetch full comment objects from the primed cache. $_comments = array(); foreach ( $comment_ids as $comment_id ) { $_comment = get_comment( $comment_id ); if ( $_comment ) { $_comments[] = $_comment; } } // Prime comment post caches. if ( $this->query_vars['update_comment_post_cache'] ) { $comment_post_ids = array(); foreach ( $_comments as $_comment ) { $comment_post_ids[] = $_comment->comment_post_ID; } _prime_post_caches( $comment_post_ids, false, false ); } /** * Filters the comment query results. * * @since 3.1.0 * * @param WP_Comment[] $_comments An array of comments. * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). */ $_comments = apply_filters_ref_array( 'the_comments', array( $_comments, &$this ) ); // Convert to WP_Comment instances. $comments = array_map( 'get_comment', $_comments ); if ( $this->query_vars['hierarchical'] ) { $comments = $this->fill_descendants( $comments ); } $this->comments = $comments; return $this->comments; } /** * Used internally to get a list of comment IDs matching the query vars. * * @since 4.4.0 * @since 6.9.0 Excludes the 'note' comment type, unless 'all' or the 'note' types are requested. * * @global wpdb $wpdb WordPress database abstraction object. * * @return int|array A single count of comment IDs if a count query. An array of comment IDs if a full query. */ protected function get_comment_ids() { global $wpdb; // Assemble clauses related to 'comment_approved'. $approved_clauses = array(); // 'status' accepts an array or a comma-separated string. $status_clauses = array(); $statuses = wp_parse_list( $this->query_vars['status'] ); // Empty 'status' should be interpreted as 'all'. if ( empty( $statuses ) ) { $statuses = array( 'all' ); } // 'any' overrides other statuses. if ( ! in_array( 'any', $statuses, true ) ) { foreach ( $statuses as $status ) { switch ( $status ) { case 'hold': $status_clauses[] = "comment_approved = '0'"; break; case 'approve': $status_clauses[] = "comment_approved = '1'"; break; case 'all': case '': $status_clauses[] = "( comment_approved = '0' OR comment_approved = '1' )"; break; default: $status_clauses[] = $wpdb->prepare( 'comment_approved = %s', $status ); break; } } $approved_clauses[] = '( ' . implode( ' OR ', $status_clauses ) . ' )'; } // User IDs or emails whose unapproved comments are included, regardless of $status. if ( ! empty( $this->query_vars['include_unapproved'] ) ) { $include_unapproved = wp_parse_list( $this->query_vars['include_unapproved'] ); foreach ( $include_unapproved as $unapproved_identifier ) { // Numeric values are assumed to be user IDs. if ( is_numeric( $unapproved_identifier ) ) { $approved_clauses[] = $wpdb->prepare( "( user_id = %d AND comment_approved = '0' )", $unapproved_identifier ); } else { // Otherwise we match against email addresses. if ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) { // Only include requested comment. $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' AND {$wpdb->comments}.comment_ID = %d )", $unapproved_identifier, (int) $_GET['unapproved'] ); } else { // Include all of the author's unapproved comments. $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier ); } } } } // Collapse comment_approved clauses into a single OR-separated clause. if ( ! empty( $approved_clauses ) ) { if ( 1 === count( $approved_clauses ) ) { $this->sql_clauses['where']['approved'] = $approved_clauses[0]; } else { $this->sql_clauses['where']['approved'] = '( ' . implode( ' OR ', $approved_clauses ) . ' )'; } } $order = ( 'ASC' === strtoupper( $this->query_vars['order'] ) ) ? 'ASC' : 'DESC'; // Disable ORDER BY with 'none', an empty array, or boolean false. if ( in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) { $orderby = ''; } elseif ( ! empty( $this->query_vars['orderby'] ) ) { $ordersby = is_array( $this->query_vars['orderby'] ) ? $this->query_vars['orderby'] : preg_split( '/[,\s]/', $this->query_vars['orderby'] ); $orderby_array = array(); $found_orderby_comment_id = false; foreach ( $ordersby as $_key => $_value ) { if ( ! $_value ) { continue; } if ( is_int( $_key ) ) { $_orderby = $_value; $_order = $order; } else { $_orderby = $_key; $_order = $_value; } if ( ! $found_orderby_comment_id && in_array( $_orderby, array( 'comment_ID', 'comment__in' ), true ) ) { $found_orderby_comment_id = true; } $parsed = $this->parse_orderby( $_orderby ); if ( ! $parsed ) { continue; } if ( 'comment__in' === $_orderby ) { $orderby_array[] = $parsed; continue; } $orderby_array[] = $parsed . ' ' . $this->parse_order( $_order ); } // If no valid clauses were found, order by comment_date_gmt. if ( empty( $orderby_array ) ) { $orderby_array[] = "$wpdb->comments.comment_date_gmt $order"; } // To ensure determinate sorting, always include a comment_ID clause. if ( ! $found_orderby_comment_id ) { $comment_id_order = ''; // Inherit order from comment_date or comment_date_gmt, if available. foreach ( $orderby_array as $orderby_clause ) { if ( preg_match( '/comment_date(?:_gmt)*\ (ASC|DESC)/', $orderby_clause, $match ) ) { $comment_id_order = $match[1]; break; } } // If no date-related order is available, use the date from the first available clause. if ( ! $comment_id_order ) { foreach ( $orderby_array as $orderby_clause ) { if ( str_contains( 'ASC', $orderby_clause ) ) { $comment_id_order = 'ASC'; } else { $comment_id_order = 'DESC'; } break; } } // Default to DESC. if ( ! $comment_id_order ) { $comment_id_order = 'DESC'; } $orderby_array[] = "$wpdb->comments.comment_ID $comment_id_order"; } $orderby = implode( ', ', $orderby_array ); } else { $orderby = "$wpdb->comments.comment_date_gmt $order"; } $number = absint( $this->query_vars['number'] ); $offset = absint( $this->query_vars['offset'] ); $paged = absint( $this->query_vars['paged'] ); $limits = ''; if ( ! empty( $number ) ) { if ( $offset ) { $limits = 'LIMIT ' . $offset . ',' . $number; } else { $limits = 'LIMIT ' . ( $number * ( $paged - 1 ) ) . ',' . $number; } } if ( $this->query_vars['count'] ) { $fields = 'COUNT(*)'; } else { $fields = "$wpdb->comments.comment_ID"; } $post_id = absint( $this->query_vars['post_id'] ); if ( ! empty( $post_id ) ) { $this->sql_clauses['where']['post_id'] = $wpdb->prepare( 'comment_post_ID = %d', $post_id ); } // Parse comment IDs for an IN clause. if ( ! empty( $this->query_vars['comment__in'] ) ) { $this->sql_clauses['where']['comment__in'] = "$wpdb->comments.comment_ID IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['comment__in'] ) ) . ' )'; } // Parse comment IDs for a NOT IN clause. if ( ! empty( $this->query_vars['comment__not_in'] ) ) { $this->sql_clauses['where']['comment__not_in'] = "$wpdb->comments.comment_ID NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['comment__not_in'] ) ) . ' )'; } // Parse comment parent IDs for an IN clause. if ( ! empty( $this->query_vars['parent__in'] ) ) { $this->sql_clauses['where']['parent__in'] = 'comment_parent IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['parent__in'] ) ) . ' )'; } // Parse comment parent IDs for a NOT IN clause. if ( ! empty( $this->query_vars['parent__not_in'] ) ) { $this->sql_clauses['where']['parent__not_in'] = 'comment_parent NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['parent__not_in'] ) ) . ' )'; } // Parse comment post IDs for an IN clause. if ( ! empty( $this->query_vars['post__in'] ) ) { $this->sql_clauses['where']['post__in'] = 'comment_post_ID IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__in'] ) ) . ' )'; } // Parse comment post IDs for a NOT IN clause. if ( ! empty( $this->query_vars['post__not_in'] ) ) { $this->sql_clauses['where']['post__not_in'] = 'comment_post_ID NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post__not_in'] ) ) . ' )'; } if ( '' !== $this->query_vars['author_email'] ) { $this->sql_clauses['where']['author_email'] = $wpdb->prepare( 'comment_author_email = %s', $this->query_vars['author_email'] ); } if ( '' !== $this->query_vars['author_url'] ) { $this->sql_clauses['where']['author_url'] = $wpdb->prepare( 'comment_author_url = %s', $this->query_vars['author_url'] ); } if ( '' !== $this->query_vars['karma'] ) { $this->sql_clauses['where']['karma'] = $wpdb->prepare( 'comment_karma = %d', $this->query_vars['karma'] ); } // Filtering by comment_type: 'type', 'type__in', 'type__not_in'. $raw_types = array( 'IN' => array_merge( (array) $this->query_vars['type'], (array) $this->query_vars['type__in'] ), 'NOT IN' => (array) $this->query_vars['type__not_in'], ); // Exclude the 'note' comment type, unless 'all' types or the 'note' type explicitly are requested. if ( ! in_array( 'all', $raw_types['IN'], true ) && ! in_array( 'note', $raw_types['IN'], true ) && ! in_array( 'note', $raw_types['NOT IN'], true ) ) { $raw_types['NOT IN'][] = 'note'; } $comment_types = array(); foreach ( $raw_types as $operator => $_raw_types ) { $_raw_types = array_unique( $_raw_types ); foreach ( $_raw_types as $type ) { switch ( $type ) { // An empty translates to 'all', for backward compatibility. case '': case 'all': break; case 'comment': case 'comments': $comment_types[ $operator ][] = "''"; $comment_types[ $operator ][] = "'comment'"; break; case 'pings': $comment_types[ $operator ][] = "'pingback'"; $comment_types[ $operator ][] = "'trackback'"; break; default: $comment_types[ $operator ][] = $wpdb->prepare( '%s', $type ); break; } } if ( ! empty( $comment_types[ $operator ] ) ) { $types_sql = implode( ', ', $comment_types[ $operator ] ); $this->sql_clauses['where'][ 'comment_type__' . strtolower( str_replace( ' ', '_', $operator ) ) ] = "comment_type $operator ($types_sql)"; } } $parent = $this->query_vars['parent']; if ( $this->query_vars['hierarchical'] && ! $parent ) { $parent = 0; } if ( '' !== $parent ) { $this->sql_clauses['where']['parent'] = $wpdb->prepare( 'comment_parent = %d', $parent ); } if ( is_array( $this->query_vars['user_id'] ) ) { $this->sql_clauses['where']['user_id'] = 'user_id IN (' . implode( ',', array_map( 'absint', $this->query_vars['user_id'] ) ) . ')'; } elseif ( '' !== $this->query_vars['user_id'] ) { $this->sql_clauses['where']['user_id'] = $wpdb->prepare( 'user_id = %d', $this->query_vars['user_id'] ); } // Falsey search strings are ignored. if ( isset( $this->query_vars['search'] ) && strlen( $this->query_vars['search'] ) ) { $search_sql = $this->get_search_sql( $this->query_vars['search'], array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_content' ) ); // Strip leading 'AND'. $this->sql_clauses['where']['search'] = preg_replace( '/^\s*AND\s*/', '', $search_sql ); } // If any post-related query vars are passed, join the posts table. $join_posts_table = false; $plucked = wp_array_slice_assoc( $this->query_vars, array( 'post_author', 'post_name', 'post_parent' ) ); $post_fields = array_filter( $plucked ); if ( ! empty( $post_fields ) ) { $join_posts_table = true; foreach ( $post_fields as $field_name => $field_value ) { // $field_value may be an array. $esses = array_fill( 0, count( (array) $field_value ), '%s' ); // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare $this->sql_clauses['where'][ $field_name ] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $field_value ); } } // 'post_status' and 'post_type' are handled separately, due to the specialized behavior of 'any'. foreach ( array( 'post_status', 'post_type' ) as $field_name ) { $q_values = array(); if ( ! empty( $this->query_vars[ $field_name ] ) ) { $q_values = $this->query_vars[ $field_name ]; if ( ! is_array( $q_values ) ) { $q_values = explode( ',', $q_values ); } // 'any' will cause the query var to be ignored. if ( in_array( 'any', $q_values, true ) || empty( $q_values ) ) { continue; } $join_posts_table = true; $esses = array_fill( 0, count( $q_values ), '%s' ); // phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare $this->sql_clauses['where'][ $field_name ] = $wpdb->prepare( " {$wpdb->posts}.{$field_name} IN (" . implode( ',', $esses ) . ')', $q_values ); } } // Comment author IDs for an IN clause. if ( ! empty( $this->query_vars['author__in'] ) ) { $this->sql_clauses['where']['author__in'] = 'user_id IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__in'] ) ) . ' )'; } // Comment author IDs for a NOT IN clause. if ( ! empty( $this->query_vars['author__not_in'] ) ) { $this->sql_clauses['where']['author__not_in'] = 'user_id NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['author__not_in'] ) ) . ' )'; } // Post author IDs for an IN clause. if ( ! empty( $this->query_vars['post_author__in'] ) ) { $join_posts_table = true; $this->sql_clauses['where']['post_author__in'] = 'post_author IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__in'] ) ) . ' )'; } // Post author IDs for a NOT IN clause. if ( ! empty( $this->query_vars['post_author__not_in'] ) ) { $join_posts_table = true; $this->sql_clauses['where']['post_author__not_in'] = 'post_author NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['post_author__not_in'] ) ) . ' )'; } $join = ''; $groupby = ''; if ( $join_posts_table ) { $join .= "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID"; } if ( ! empty( $this->meta_query_clauses ) ) { $join .= $this->meta_query_clauses['join']; // Strip leading 'AND'. $this->sql_clauses['where']['meta_query'] = preg_replace( '/^\s*AND\s*/', '', $this->meta_query_clauses['where'] ); if ( ! $this->query_vars['count'] ) { $groupby = "{$wpdb->comments}.comment_ID"; } } if ( ! empty( $this->query_vars['date_query'] ) && is_array( $this->query_vars['date_query'] ) ) { $this->date_query = new WP_Date_Query( $this->query_vars['date_query'], 'comment_date' ); // Strip leading 'AND'. $this->sql_clauses['where']['date_query'] = preg_replace( '/^\s*AND\s*/', '', $this->date_query->get_sql() ); } $where = implode( ' AND ', $this->sql_clauses['where'] ); $pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' ); /** * Filters the comment query clauses. * * @since 3.1.0 * * @param string[] $clauses { * Associative array of the clauses for the query. * * @type string $fields The SELECT clause of the query. * @type string $join The JOIN clause of the query. * @type string $where The WHERE clause of the query. * @type string $orderby The ORDER BY clause of the query. * @type string $limits The LIMIT clause of the query. * @type string $groupby The GROUP BY clause of the query. * } * @param WP_Comment_Query $query Current instance of WP_Comment_Query (passed by reference). */ $clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $pieces ), &$this ) ); $fields = isset( $clauses['fields'] ) ? $clauses['fields'] : ''; $join = isset( $clauses['join'] ) ? $clauses['join'] : ''; $where = isset( $clauses['where'] ) ? $clauses['where'] : ''; $orderby = isset( $clauses['orderby'] ) ? $clauses['orderby'] : ''; $limits = isset( $clauses['limits'] ) ? $clauses['limits'] : ''; $groupby = isset( $clauses['groupby'] ) ? $clauses['groupby'] : ''; $this->filtered_where_clause = $where; if ( $where ) { $where = 'WHERE ' . $where; } if ( $groupby ) { $groupby = 'GROUP BY ' . $groupby; } if ( $orderby ) { $orderby = "ORDER BY $orderby"; } $found_rows = ''; if ( ! $this->query_vars['no_found_rows'] ) { $found_rows = 'SQL_CALC_FOUND_ROWS'; } $this->sql_clauses['select'] = "SELECT $found_rows $fields"; $this->sql_clauses['from'] = "FROM $wpdb->comments $join"; $this->sql_clauses['groupby'] = $groupby; $this->sql_clauses['orderby'] = $orderby; $this->sql_clauses['limits'] = $limits; // Beginning of the string is on a new line to prevent leading whitespace. See https://core.trac.wordpress.org/ticket/56841. $this->request = "{$this->sql_clauses['select']} {$this->sql_clauses['from']} {$where} {$this->sql_clauses['groupby']} {$this->sql_clauses['orderby']} {$this->sql_clauses['limits']}"; if ( $this->query_vars['count'] ) { return (int) $wpdb->get_var( $this->request ); } else { $comment_ids = $wpdb->get_col( $this->request ); return array_map( 'intval', $comment_ids ); } } /** * Populates found_comments and max_num_pages properties for the current * query if the limit clause was used. * * @since 4.6.0 * * @global wpdb $wpdb WordPress database abstraction object. */ private function set_found_comments() { global $wpdb; if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) { /** * Filters the query used to retrieve found comment count. * * @since 4.4.0 * * @param string $found_comments_query SQL query. Default 'SELECT FOUND_ROWS()'. * @param WP_Comment_Query $comment_query The `WP_Comment_Query` instance. */ $found_comments_query = apply_filters( 'found_comments_query', 'SELECT FOUND_ROWS()', $this ); $this->found_comments = (int) $wpdb->get_var( $found_comments_query ); } } /** * Fetch descendants for located comments. * * Instead of calling `get_children()` separately on each child comment, we do a single set of queries to fetch * the descendant trees for all matched top-level comments. * * @since 4.4.0 * * @param WP_Comment[] $comments Array of top-level comments whose descendants should be filled in. * @return array */ protected function fill_descendants( $comments ) { $levels = array( 0 => wp_list_pluck( $comments, 'comment_ID' ), ); $key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) ); $last_changed = wp_cache_get_last_changed( 'comment' ); // Fetch an entire level of the descendant tree at a time. $level = 0; $exclude_keys = array( 'parent', 'parent__in', 'parent__not_in' ); do { // Parent-child relationships may be cached. Only query for those that are not. $child_ids = array(); $uncached_parent_ids = array(); $_parent_ids = $levels[ $level ]; if ( $_parent_ids ) { $cache_keys = array(); foreach ( $_parent_ids as $parent_id ) { $cache_keys[ $parent_id ] = "get_comment_child_ids:$parent_id:$key"; } $cache_data = wp_cache_get_multiple_salted( array_values( $cache_keys ), 'comment-queries', $last_changed ); foreach ( $_parent_ids as $parent_id ) { $parent_child_ids = $cache_data[ $cache_keys[ $parent_id ] ]; if ( false !== $parent_child_ids ) { $child_ids = array_merge( $child_ids, $parent_child_ids ); } else { $uncached_parent_ids[] = $parent_id; } } } if ( $uncached_parent_ids ) { // Fetch this level of comments. $parent_query_args = $this->query_vars; foreach ( $exclude_keys as $exclude_key ) { $parent_query_args[ $exclude_key ] = ''; } $parent_query_args['parent__in'] = $uncached_parent_ids; $parent_query_args['no_found_rows'] = true; $parent_query_args['hierarchical'] = false; $parent_query_args['offset'] = 0; $parent_query_args['number'] = 0; $level_comments = get_comments( $parent_query_args ); // Cache parent-child relationships. $parent_map = array_fill_keys( $uncached_parent_ids, array() ); foreach ( $level_comments as $level_comment ) { $parent_map[ $level_comment->comment_parent ][] = $level_comment->comment_ID; $child_ids[] = $level_comment->comment_ID; } $data = array(); foreach ( $parent_map as $parent_id => $children ) { $cache_key = "get_comment_child_ids:$parent_id:$key"; $data[ $cache_key ] = $children; } wp_cache_set_multiple_salted( $data, 'comment-queries', $last_changed ); } ++$level; $levels[ $level ] = $child_ids; } while ( $child_ids ); // Prime comment caches for non-top-level comments. $descendant_ids = array(); for ( $i = 1, $c = count( $levels ); $i < $c; $i++ ) { $descendant_ids = array_merge( $descendant_ids, $levels[ $i ] ); } _prime_comment_caches( $descendant_ids, $this->query_vars['update_comment_meta_cache'] ); // Assemble a flat array of all comments + descendants. $all_comments = $comments; foreach ( $descendant_ids as $descendant_id ) { $all_comments[] = get_comment( $descendant_id ); } // If a threaded representation was requested, build the tree. if ( 'threaded' === $this->query_vars['hierarchical'] ) { $threaded_comments = array(); $ref = array(); foreach ( $all_comments as $k => $c ) { $_c = get_comment( $c->comment_ID ); // If the comment isn't in the reference array, it goes in the top level of the thread. if ( ! isset( $ref[ $c->comment_parent ] ) ) { $threaded_comments[ $_c->comment_ID ] = $_c; $ref[ $_c->comment_ID ] = $threaded_comments[ $_c->comment_ID ]; // Otherwise, set it as a child of its parent. } else { $ref[ $_c->comment_parent ]->add_child( $_c ); $ref[ $_c->comment_ID ] = $ref[ $_c->comment_parent ]->get_child( $_c->comment_ID ); } } // Set the 'populated_children' flag, to ensure additional database queries aren't run. foreach ( $ref as $_ref ) { $_ref->populated_children( true ); } $comments = $threaded_comments; } else { $comments = $all_comments; } return $comments; } /** * Used internally to generate an SQL string for searching across multiple columns. * * @since 3.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $search Search string. * @param string[] $columns Array of columns to search. * @return string Search SQL. */ protected function get_search_sql( $search, $columns ) { global $wpdb; $like = '%' . $wpdb->esc_like( $search ) . '%'; $searches = array(); foreach ( $columns as $column ) { $searches[] = $wpdb->prepare( "$column LIKE %s", $like ); } return ' AND (' . implode( ' OR ', $searches ) . ')'; } /** * Parse and sanitize 'orderby' keys passed to the comment query. * * @since 4.2.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $orderby Alias for the field to order by. * @return string|false Value to used in the ORDER clause. False otherwise. */ protected function parse_orderby( $orderby ) { global $wpdb; $allowed_keys = array( 'comment_agent', 'comment_approved', 'comment_author', 'comment_author_email', 'comment_author_IP', 'comment_author_url', 'comment_content', 'comment_date', 'comment_date_gmt', 'comment_ID', 'comment_karma', 'comment_parent', 'comment_post_ID', 'comment_type', 'user_id', ); if ( ! empty( $this->query_vars['meta_key'] ) ) { $allowed_keys[] = $this->query_vars['meta_key']; $allowed_keys[] = 'meta_value'; $allowed_keys[] = 'meta_value_num'; } $meta_query_clauses = $this->meta_query->get_clauses(); if ( $meta_query_clauses ) { $allowed_keys = array_merge( $allowed_keys, array_keys( $meta_query_clauses ) ); } $parsed = false; if ( $this->query_vars['meta_key'] === $orderby || 'meta_value' === $orderby ) { $parsed = "$wpdb->commentmeta.meta_value"; } elseif ( 'meta_value_num' === $orderby ) { $parsed = "$wpdb->commentmeta.meta_value+0"; } elseif ( 'comment__in' === $orderby ) { $comment__in = implode( ',', array_map( 'absint', $this->query_vars['comment__in'] ) ); $parsed = "FIELD( {$wpdb->comments}.comment_ID, $comment__in )"; } elseif ( in_array( $orderby, $allowed_keys, true ) ) { if ( isset( $meta_query_clauses[ $orderby ] ) ) { $meta_clause = $meta_query_clauses[ $orderby ]; $parsed = sprintf( 'CAST(%s.meta_value AS %s)', esc_sql( $meta_clause['alias'] ), esc_sql( $meta_clause['cast'] ) ); } else { $parsed = "$wpdb->comments.$orderby"; } } return $parsed; } /** * Parse an 'order' query variable and cast it to ASC or DESC as necessary. * * @since 4.2.0 * * @param string $order The 'order' query variable. * @return string The sanitized 'order' query variable. */ protected function parse_order( $order ) { if ( ! is_string( $order ) || empty( $order ) ) { return 'DESC'; } if ( 'ASC' === strtoupper( $order ) ) { return 'ASC'; } else { return 'DESC'; } } }