--TEST-- Test session_set_save_handler() : incorrect arguments for existing handler open --INI-- session.save_handler=files session.name=PHPSESSID session.gc_probability=0 --SKIPIF-- --FILE-- i; echo 'Open ', session_id(), "\n"; // This test was written for broken return value handling // Mimmick what was actually being tested by returning true here return (null === parent::open()); } public function read($key) { ++$this->i; echo 'Read ', session_id(), "\n"; return parent::read($key); } } $oldHandler = ini_get('session.save_handler'); $handler = new MySession; session_set_save_handler($handler); session_start(); var_dump(session_id(), $oldHandler, ini_get('session.save_handler'), $handler->i, $_SESSION); --EXPECTF-- *** Testing session_set_save_handler() : incorrect arguments for existing handler open *** Open Warning: SessionHandler::open() expects exactly 2 parameters, 0 given in %s on line %d Read %s Warning: SessionHandler::read(): Parent session handler is not open in %s on line %d string(%d) "%s" string(5) "files" string(4) "user" int(2) array(0) { } Warning: SessionHandler::write(): Parent session handler is not open in Unknown on line 0 Warning: session_write_close(): Failed to write session data %s in %s on line %d Warning: SessionHandler::close(): Parent session handler is not open in Unknown on line 0