- var_dump: documentation ( source)
- urldecode: documentation ( source)
- unserialize: documentation ( source)
<?php
$data["A"]="AAAA";
$pass="B";
unserialize(urldecode('%73%3a%31%3a%22%70%61%73%73%22%3b%73%3a%34%3a%22%41%41%41%41%22%3b'));
var_dump($data["A"] == $pass);
//echo urlencode(serialize($data));