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run code in 200+ php & hhvm versions
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<?php define('__FLAG__','3xZG{dgznclXAwFVCUHPMWFViZ½SsltxKdrvûVYHSr1}'); if(__FLAG__ === stypr_crypt(stypr_crypt(stypr_crypt($_GET['flag'])))) echo 'Correct!'; else echo 'Incorrect..'; ?>
based on d1v12
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function stypr_crypt() in /in/ek3nA:6 Stack trace: #0 {main} thrown in /in/ek3nA on line 6
Process exited with code 255.
Output for 5.3.21 - 5.6.28
Fatal error: Call to undefined function stypr_crypt() in /in/ek3nA on line 6
Process exited with code 255.