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<?php $encodedReg = base64_encode("MUI6181"); $retVal = mcrypt_decrypt("rijndael-128", "Key1Key2Key3Key4", base64_decode($encodedReg), "ecb"); echo $retVal; ?>
Output for 7.0.6 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function mcrypt_decrypt() in /in/Z5mbf:5 Stack trace: #0 {main} thrown in /in/Z5mbf on line 5
Process exited with code 255.
Output for 5.5.24 - 5.5.34, 5.6.8 - 5.6.20, 7.0.0 - 7.0.5
+Y�C�.��D�����
Output for 5.5.35, 5.6.21 - 5.6.28
Fatal error: Call to undefined function mcrypt_decrypt() in /in/Z5mbf on line 5
Process exited with code 255.

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