Online PHP editor | refs for ovn6h

<?php define('__FLAG__','3xZG{dgznclXAwFVCUHPMWFViZBDSsltxKdrvFBVYHSr1}'); function stypr_crypt($_0){$_1 = $_2 = $_3 = array(); $_4 =array('?','(','@', ';', '$','#', ']', '&', '*'); $_4 = array_merge($_4,range('a','z'),range('0','9'),range('A','Z')); $_4 = array_merge($_4,array('!', ')', '_', '+', '|', '%', '/', '[', '.', ' ')); $_5=9; $_6=0; for($_5=9,$_6=0;$_6 < $_5;$_6++){ } } if(__FLAG__ === stypr_crypt(stypr_crypt(stypr_crypt($_GET['flag'])))) echo 'Correct!'; else echo 'Incorrect..'; ?>