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<?php $encrypt_result = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, "bite", "data", MCRYPT_MODE_ECB); var_dump($encrypt_result); $user_id = 4; $result = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, "bite", base64_decode($user_id), MCRYPT_MODE_ECB), "\0"); var_dump($result);
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_encrypt() in /in/3Tp3i:4 Stack trace: #0 {main} thrown in /in/3Tp3i on line 4
Process exited with code 255.
Output for 5.6.8 - 5.6.20, 7.0.0 - 7.0.5
Warning: mcrypt_encrypt(): Key of size 4 not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported in /in/3Tp3i on line 4 bool(false) Warning: mcrypt_decrypt(): Key of size 4 not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported in /in/3Tp3i on line 9 string(0) ""
Output for 5.5.35, 5.6.21 - 5.6.28
Fatal error: Call to undefined function mcrypt_encrypt() in /in/3Tp3i on line 4
Process exited with code 255.
Output for 5.5.24 - 5.5.34
string(32) "�\��3����W t|���_9u�����" string(32) "�[*(쎃�� >�~ d�3Ppu���ә�K����""

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