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<?php $key = 'FSHcT+sfRO/siok2ooweuA=='; $key = base64_decode($key); $message = 'I want to decode this'; $iv = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM); $iv = '0000000000000000'; print $iv.'<p>'; $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $message, MCRYPT_MODE_CBC, $iv); $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encrypted, MCRYPT_MODE_CBC, $iv); print base64_encode($encrypted); ?>
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_create_iv() in /in/t56OU:7 Stack trace: #0 {main} thrown in /in/t56OU on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.34, 5.6.7 - 5.6.20, 7.0.0 - 7.0.5
0000000000000000<p>VTilfRmCojTGXLF+LtP36x9cQ4Hawt7mWaLyqAvwOHc=
Output for 5.5.35, 5.6.21 - 5.6.28
Fatal error: Call to undefined function mcrypt_create_iv() in /in/t56OU on line 7
Process exited with code 255.

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