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run code in 300+ PHP versions simultaneously
<?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..'; ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined array key "flag" in /in/ovn6h on line 6 Incorrect..
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: flag in /in/ovn6h on line 6 Incorrect..
Output for 7.3.32 - 7.3.33
Incorrect..

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245.03 ms | 402 KiB | 271 Q