- var_dump: documentation ( source)
- md5: documentation ( source)
<?php
$cipher = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, md5('my-key'), 'Hello World', MCRYPT_MODE_CBC);
$plain = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, md5('not-my-key'), $cipher, MCRYPT_MODE_CBC);
var_dump($plain);