-/**
- * WordPress Comment Query class.
- *
- * @since 3.1.0
- */
-class WP_Comment_Query {
- /**
- * Metadata query container
- *
- * @since 3.5.0
- * @access public
- * @var object WP_Meta_Query
- */
- var $meta_query = false;
-
- /**
- * Date query container
- *
- * @since 3.7.0
- * @access public
- * @var object WP_Date_Query
- */
- var $date_query = false;
-
- /**
- * Execute the query
- *
- * @since 3.1.0
- *
- * @param string|array $query_vars
- * @return int|array
- */
- function query( $query_vars ) {
- global $wpdb;
-
- $defaults = array(
- 'author_email' => '',
- 'ID' => '',
- 'karma' => '',
- 'number' => '',
- 'offset' => '',
- 'orderby' => '',
- 'order' => 'DESC',
- 'parent' => '',
- 'post_ID' => '',
- 'post_id' => 0,
- 'post_author' => '',
- 'post_name' => '',
- 'post_parent' => '',
- 'post_status' => '',
- 'post_type' => '',
- 'status' => '',
- 'type' => '',
- 'user_id' => '',
- 'search' => '',
- 'count' => false,
- 'meta_key' => '',
- 'meta_value' => '',
- 'meta_query' => '',
- 'date_query' => null, // See WP_Date_Query
- );
-
- $groupby = '';
-
- $this->query_vars = wp_parse_args( $query_vars, $defaults );
-
- // Parse meta query
- $this->meta_query = new WP_Meta_Query();
- $this->meta_query->parse_query_vars( $this->query_vars );
-
- /**
- * Fires before comments are retrieved.
- *
- * @since 3.1.0
- *
- * @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference.
- */
- do_action_ref_array( 'pre_get_comments', array( &$this ) );
- extract( $this->query_vars, EXTR_SKIP );
-
- // $args can be whatever, only use the args defined in defaults to compute the key
- $key = md5( serialize( compact(array_keys($defaults)) ) );
- $last_changed = wp_cache_get( 'last_changed', 'comment' );
- if ( ! $last_changed ) {
- $last_changed = microtime();
- wp_cache_set( 'last_changed', $last_changed, 'comment' );
- }
- $cache_key = "get_comments:$key:$last_changed";
-
- if ( $cache = wp_cache_get( $cache_key, 'comment' ) )
- return $cache;
-
- $post_id = absint($post_id);
-
- if ( 'hold' == $status )
- $approved = "comment_approved = '0'";
- elseif ( 'approve' == $status )
- $approved = "comment_approved = '1'";
- elseif ( ! empty( $status ) && 'all' != $status )
- $approved = $wpdb->prepare( "comment_approved = %s", $status );
- else
- $approved = "( comment_approved = '0' OR comment_approved = '1' )";
-
- $order = ( 'ASC' == strtoupper($order) ) ? 'ASC' : 'DESC';
-
- if ( ! empty( $orderby ) ) {
- $ordersby = is_array($orderby) ? $orderby : preg_split('/[,\s]/', $orderby);
- $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';
- }
- $ordersby = array_intersect( $ordersby, $allowed_keys );
- foreach ( $ordersby as $key => $value ) {
- if ( $value == $this->query_vars['meta_key'] || $value == 'meta_value' ) {
- $ordersby[ $key ] = "$wpdb->commentmeta.meta_value";
- } elseif ( $value == 'meta_value_num' ) {
- $ordersby[ $key ] = "$wpdb->commentmeta.meta_value+0";
- }
- }
- $orderby = empty( $ordersby ) ? 'comment_date_gmt' : implode(', ', $ordersby);
- } else {
- $orderby = 'comment_date_gmt';
- }
-
- $number = absint($number);
- $offset = absint($offset);
-
- if ( !empty($number) ) {
- if ( $offset )
- $limits = 'LIMIT ' . $offset . ',' . $number;
- else
- $limits = 'LIMIT ' . $number;
- } else {
- $limits = '';
- }
-
- if ( $count )
- $fields = 'COUNT(*)';
- else
- $fields = '*';
-
- $join = '';
- $where = $approved;
-
- if ( ! empty($post_id) )
- $where .= $wpdb->prepare( ' AND comment_post_ID = %d', $post_id );
- if ( '' !== $author_email )
- $where .= $wpdb->prepare( ' AND comment_author_email = %s', $author_email );
- if ( '' !== $karma )
- $where .= $wpdb->prepare( ' AND comment_karma = %d', $karma );
- if ( 'comment' == $type ) {
- $where .= " AND comment_type = ''";
- } elseif( 'pings' == $type ) {
- $where .= ' AND comment_type IN ("pingback", "trackback")';
- } elseif ( ! empty( $type ) ) {
- $where .= $wpdb->prepare( ' AND comment_type = %s', $type );
- }
- if ( '' !== $parent )
- $where .= $wpdb->prepare( ' AND comment_parent = %d', $parent );
-
- if ( is_array( $user_id ) ) {
- $where .= ' AND user_id IN (' . implode( ',', array_map( 'absint', $user_id ) ) . ')';
- } elseif ( '' !== $user_id ) {
- $where .= $wpdb->prepare( ' AND user_id = %d', $user_id );
- }
-
- if ( '' !== $search )
- $where .= $this->get_search_sql( $search, array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_content' ) );
-
- $post_fields = array_filter( compact( array( 'post_author', 'post_name', 'post_parent', 'post_status', 'post_type', ) ) );
- if ( ! empty( $post_fields ) ) {
- $join = "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID";
- foreach( $post_fields as $field_name => $field_value )
- $where .= $wpdb->prepare( " AND {$wpdb->posts}.{$field_name} = %s", $field_value );
- }
-
- if ( ! empty( $this->meta_query->queries ) ) {
- $clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this );
- $join .= $clauses['join'];
- $where .= $clauses['where'];
- $groupby = "{$wpdb->comments}.comment_ID";
- }
-
- if ( ! empty( $date_query ) && is_array( $date_query ) ) {
- $date_query_object = new WP_Date_Query( $date_query, 'comment_date' );
- $where .= $date_query_object->get_sql();
- }
-
- $pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits', 'groupby' );
- /**
- * Filter the comment query clauses.
- *
- * @since 3.1.0
- *
- * @param array $pieces A compacted array of comment query clauses.
- * @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference.
- */
- $clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $pieces ), &$this ) );
- foreach ( $pieces as $piece )
- $$piece = isset( $clauses[ $piece ] ) ? $clauses[ $piece ] : '';
-
- if ( $groupby )
- $groupby = 'GROUP BY ' . $groupby;
-
- $query = "SELECT $fields FROM $wpdb->comments $join WHERE $where $groupby ORDER BY $orderby $order $limits";
-
- if ( $count )
- return $wpdb->get_var( $query );
-
- $comments = $wpdb->get_results( $query );
- /**
- * Filter the comment query results.
- *
- * @since 3.1.0
- *
- * @param array $comments An array of comments.
- * @param WP_Comment_Query &$this Current instance of WP_Comment_Query, passed by reference.
- */
- $comments = apply_filters_ref_array( 'the_comments', array( $comments, &$this ) );
-
- wp_cache_add( $cache_key, $comments, 'comment' );
-
- return $comments;
- }
-
- /**
- * Used internally to generate an SQL string for searching across multiple columns
- *
- * @access protected
- * @since 3.1.0
- *
- * @param string $string
- * @param array $cols
- * @return string
- */
- function get_search_sql( $string, $cols ) {
- $string = esc_sql( like_escape( $string ) );
-
- $searches = array();
- foreach ( $cols as $col )
- $searches[] = "$col LIKE '%$string%'";
-
- return ' AND (' . implode(' OR ', $searches) . ')';
- }
-}
-