Used internally to generate an SQL string for searching across multiple columns.

$search string Required

Search string.

$columns string[] Required

Array of columns to search.

string Search SQL.

File: wp-includes/class-wp-site-query.php. View all references

protected function get_search_sql( $search, $columns ) {
	global $wpdb;

	if ( false !== strpos( $search, '*' ) ) {
		$like = '%' . implode( '%', array_map( array( $wpdb, 'esc_like' ), explode( '*', $search ) ) ) . '%';
	} else {
		$like = '%' . $wpdb->esc_like( $search ) . '%';
	}

	$searches = array();
	foreach ( $columns as $column ) {
		$searches[] = $wpdb->prepare( "$column LIKE %s", $like );
	}

	return '(' . implode( ' OR ', $searches ) . ')';
}