Online PHP editor | output for UYr2W

<?php define("ENCKEY", "w+2#)1FP&LIPTL2<8I2"); class CRYPT { public function encrypt($Str,$Key=ENCKEY) { srand(); $Str=str_pad($Str, 32-strlen($Str)); $IVSize=mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC); $IV=mcrypt_create_iv($IVSize, MCRYPT_RAND); $CryptStr=mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $Key, $Str, MCRYPT_MODE_CBC, $IV); return base64_encode($IV.$CryptStr); } public function decrypt($CryptStr,$Key=ENCKEY) { if ($CryptStr!='') { $IV=substr(base64_decode($CryptStr),0,16); $CryptStr=substr(base64_decode($CryptStr),16); return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $Key, $CryptStr, MCRYPT_MODE_CBC,$IV)); } else { return ''; } } } // class ENCRYPT() $s = "FGykgbMFQiTpVIRhO9HWL%2FwXYevfsd7ozE99pbDWge%2F2Fs8fQb1iqeaw3yAe%2BkLsmTgPUz7mo%2FsTfEsvEfldWEx9XU51gsM6T1othRV6rshB9ThE3BOOUKKnhqt%2FgYyUP6POu5HSr7Rem7TIJIEAPh4w1cTQNN2ZCXyYS4Y%2BC%2F8%3D"; $enc = new CRYPT; echo $enc->decrypt($s);