* Checks given files for correctness of SQL syntax. MySQL DDL will be converted to
* SQLite-compatible during processing.
* Will throw exceptions on SQL errors
- * @param $files
+ * @param array|string $files
* @throws MWException
- * @return mixed true if no error or error string in case of errors
+ * @return string|bool true if no error or error string in case of errors
*/
public static function checkSqlSyntax( $files ) {
if ( !Sqlite::isPresent() ) {