get_meta_sql │ filter-hook │ WP 3.1.0

Filters the meta query's generated SQL.

Usage

add_filter( 'get_meta_sql', 'wp_kama_get_meta_sql_filter' );

/**
 * Function for `get_meta_sql` filter-hook.
 * 
 * @param string[] $sql Array containing the query's JOIN and WHERE clauses.
 *
 * @return string[]
 */
function wp_kama_get_meta_sql_filter( $sql ){

	// filter...
	return $sql;
}

$sql(string[])

Array containing the query's JOIN and WHERE clauses.

Changelog

Where the hook is called

return apply_filters_ref_array( 'get_meta_sql', array( $sql, $this->queries, $type, $primary_table, $primary_id_column, $context ) );

Where the hook is used in WordPress