derby_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'],
);
$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:$key:$last_changed";
}
$cache_data = wp_cache_get_multiple( array_values( $cache_keys ), 'comment-queries' );
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:$key:$last_changed";
$data[ $cache_key ] = $children;
}
wp_cache_set_multiple( $data, 'comment-queries' );
}
++$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';
}
}
}
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