: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
$fields = "{$wpdb->blogs}.blog_id";
// Parse site IDs for an IN clause.
$site_id = absint( $this->query_vars['ID'] );
if ( ! empty( $site_id ) ) {
$this->sql_clauses['where']['ID'] = $wpdb->prepare( "{$wpdb->blogs}.blog_id = %d", $site_id );
// Parse site IDs for an IN clause.
if ( ! empty( $this->query_vars['site__in'] ) ) {
$this->sql_clauses['where']['site__in'] = "{$wpdb->blogs}.blog_id IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['site__in'] ) ) . ' )';
// Parse site IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['site__not_in'] ) ) {
$this->sql_clauses['where']['site__not_in'] = "{$wpdb->blogs}.blog_id NOT IN ( " . implode( ',', wp_parse_id_list( $this->query_vars['site__not_in'] ) ) . ' )';
$network_id = absint( $this->query_vars['network_id'] );
if ( ! empty( $network_id ) ) {
$this->sql_clauses['where']['network_id'] = $wpdb->prepare( 'site_id = %d', $network_id );
// Parse site network IDs for an IN clause.
if ( ! empty( $this->query_vars['network__in'] ) ) {
$this->sql_clauses['where']['network__in'] = 'site_id IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['network__in'] ) ) . ' )';
// Parse site network IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['network__not_in'] ) ) {
$this->sql_clauses['where']['network__not_in'] = 'site_id NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['network__not_in'] ) ) . ' )';
if ( ! empty( $this->query_vars['domain'] ) ) {
$this->sql_clauses['where']['domain'] = $wpdb->prepare( 'domain = %s', $this->query_vars['domain'] );
// Parse site domain for an IN clause.
if ( is_array( $this->query_vars['domain__in'] ) ) {
$this->sql_clauses['where']['domain__in'] = "domain IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__in'] ) ) . "' )";
// Parse site domain for a NOT IN clause.
if ( is_array( $this->query_vars['domain__not_in'] ) ) {
$this->sql_clauses['where']['domain__not_in'] = "domain NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['domain__not_in'] ) ) . "' )";
if ( ! empty( $this->query_vars['path'] ) ) {
$this->sql_clauses['where']['path'] = $wpdb->prepare( 'path = %s', $this->query_vars['path'] );
// Parse site path for an IN clause.
if ( is_array( $this->query_vars['path__in'] ) ) {
$this->sql_clauses['where']['path__in'] = "path IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__in'] ) ) . "' )";
// Parse site path for a NOT IN clause.
if ( is_array( $this->query_vars['path__not_in'] ) ) {
$this->sql_clauses['where']['path__not_in'] = "path NOT IN ( '" . implode( "', '", $wpdb->_escape( $this->query_vars['path__not_in'] ) ) . "' )";
if ( is_numeric( $this->query_vars['archived'] ) ) {
$archived = absint( $this->query_vars['archived'] );
$this->sql_clauses['where']['archived'] = $wpdb->prepare( 'archived = %s ', absint( $archived ) );
if ( is_numeric( $this->query_vars['mature'] ) ) {
$mature = absint( $this->query_vars['mature'] );
$this->sql_clauses['where']['mature'] = $wpdb->prepare( 'mature = %d ', $mature );
if ( is_numeric( $this->query_vars['spam'] ) ) {
$spam = absint( $this->query_vars['spam'] );
$this->sql_clauses['where']['spam'] = $wpdb->prepare( 'spam = %d ', $spam );
if ( is_numeric( $this->query_vars['deleted'] ) ) {
$deleted = absint( $this->query_vars['deleted'] );
$this->sql_clauses['where']['deleted'] = $wpdb->prepare( 'deleted = %d ', $deleted );
if ( is_numeric( $this->query_vars['public'] ) ) {
$public = absint( $this->query_vars['public'] );
$this->sql_clauses['where']['public'] = $wpdb->prepare( 'public = %d ', $public );
if ( is_numeric( $this->query_vars['lang_id'] ) ) {
$lang_id = absint( $this->query_vars['lang_id'] );
$this->sql_clauses['where']['lang_id'] = $wpdb->prepare( 'lang_id = %d ', $lang_id );
// Parse site language IDs for an IN clause.
if ( ! empty( $this->query_vars['lang__in'] ) ) {
$this->sql_clauses['where']['lang__in'] = 'lang_id IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['lang__in'] ) ) . ' )';
// Parse site language IDs for a NOT IN clause.
if ( ! empty( $this->query_vars['lang__not_in'] ) ) {
$this->sql_clauses['where']['lang__not_in'] = 'lang_id NOT IN ( ' . implode( ',', wp_parse_id_list( $this->query_vars['lang__not_in'] ) ) . ' )';
// Falsey search strings are ignored.
if ( strlen( $this->query_vars['search'] ) ) {
$search_columns = array();
if ( $this->query_vars['search_columns'] ) {
$search_columns = array_intersect( $this->query_vars['search_columns'], array( 'domain', 'path' ) );
if ( ! $search_columns ) {
$search_columns = array( 'domain', 'path' );
* Filters the columns to search in a WP_Site_Query search.
* The default columns include 'domain' and 'path.
* @param string[] $search_columns Array of column names to be searched.
* @param string $search Text being searched.
* @param WP_Site_Query $query The current WP_Site_Query instance.
$search_columns = apply_filters( 'site_search_columns', $search_columns, $this->query_vars['search'], $this );
$this->sql_clauses['where']['search'] = $this->get_search_sql( $this->query_vars['search'], $search_columns );
$date_query = $this->query_vars['date_query'];
if ( ! empty( $date_query ) && is_array( $date_query ) ) {
$this->date_query = new WP_Date_Query( $date_query, 'registered' );
$this->sql_clauses['where']['date_query'] = preg_replace( '/^\s*AND\s*/', '', $this->date_query->get_sql() );
if ( ! empty( $this->meta_query_clauses ) ) {
$join .= $this->meta_query_clauses['join'];
$this->sql_clauses['where']['meta_query'] = preg_replace( '/^\s*AND\s*/', '', $this->meta_query_clauses['where'] );
if ( ! $this->query_vars['count'] ) {
$groupby = "{$wpdb->blogs}.blog_id";
$where = implode( ' AND ', $this->sql_clauses['where'] );
$pieces = array( 'fields', 'join', 'where', 'orderby', 'limits', 'groupby' );
* Filters the site query clauses.
* @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_Site_Query $query Current instance of WP_Site_Query (passed by reference).
$clauses = apply_filters_ref_array( 'sites_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'] : '';
$where = 'WHERE ' . $where;
$groupby = 'GROUP BY ' . $groupby;
$orderby = "ORDER BY $orderby";
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->blogs $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->sql_clauses['select']}
{$this->sql_clauses['from']}
{$this->sql_clauses['groupby']}
{$this->sql_clauses['orderby']}
{$this->sql_clauses['limits']}";
if ( $this->query_vars['count'] ) {
return (int) $wpdb->get_var( $this->request );
$site_ids = $wpdb->get_col( $this->request );
return array_map( 'intval', $site_ids );
* Populates found_sites and max_num_pages properties for the current query
* if the limit clause was used.
* @global wpdb $wpdb WordPress database abstraction object.
private function set_found_sites() {
if ( $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) {
* Filters the query used to retrieve found site count.
* @param string $found_sites_query SQL query. Default 'SELECT FOUND_ROWS()'.
* @param WP_Site_Query $site_query The `WP_Site_Query` instance.
$found_sites_query = apply_filters( 'found_sites_query', 'SELECT FOUND_ROWS()', $this );
$this->found_sites = (int) $wpdb->get_var( $found_sites_query );
* Used internally to generate an SQL string for searching across multiple columns.
* @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 ) {
if ( str_contains( $search, '*' ) ) {
$like = '%' . implode( '%', array_map( array( $wpdb, 'esc_like' ), explode( '*', $search ) ) ) . '%';
$like = '%' . $wpdb->esc_like( $search ) . '%';
foreach ( $columns as $column ) {
$searches[] = $wpdb->prepare( "$column LIKE %s", $like );
return '(' . implode( ' OR ', $searches ) . ')';
* Parses and sanitizes 'orderby' keys passed to the site query.
* @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 ) {
$site__in = implode( ',', array_map( 'absint', $this->query_vars['site__in'] ) );
$parsed = "FIELD( {$wpdb->blogs}.blog_id, $site__in )";
$network__in = implode( ',', array_map( 'absint', $this->query_vars['network__in'] ) );
$parsed = "FIELD( {$wpdb->blogs}.site_id, $network__in )";
$parsed = 'CHAR_LENGTH(domain)';
$parsed = 'CHAR_LENGTH(path)';
$parsed = "{$wpdb->blogs}.blog_id";
if ( ! empty( $parsed ) || empty( $this->meta_query_clauses ) ) {
$meta_clauses = $this->meta_query->get_clauses();
if ( empty( $meta_clauses ) ) {
$primary_meta_query = reset( $meta_clauses );
if ( ! empty( $primary_meta_query['key'] ) && $primary_meta_query['key'] === $orderby ) {
if ( ! empty( $primary_meta_query['type'] ) ) {
$parsed = "CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})";
$parsed = "{$primary_meta_query['alias']}.meta_value";
$parsed = "{$primary_meta_query['alias']}.meta_value+0";
if ( isset( $meta_clauses[ $orderby ] ) ) {
$meta_clause = $meta_clauses[ $orderby ];
$parsed = "CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})";
* Parses an 'order' query variable and cast it to 'ASC' or 'DESC' as necessary.
* @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 ) ) {
if ( 'ASC' === strtoupper( $order ) ) {