- hex2bin: documentation ( source)
- base64_decode: documentation ( source)
- strrev: documentation ( source)
<?php
$secret = "3d3d516343746d4d6d6c315669563362";
//print(hex2bin($secret));
//print(strrev(hex2bin($secret)));
print(base64_decode(strrev(hex2bin($secret))));
//print(hex2bin(strrev(base64_decode($secret))));
?>