- unserialize: documentation ( source)
<?php
$data = 'a:2:{i:0;O:8:"stdClass":2:{s:3:"aaa";a:2:{i:0;;s:4:"test";i:3;i:4;}s:3:"aaa";i:1;}s:3:"ccc";R:3;}';
$x = unserialize($data);
//var_dump($x);
if(in_array($x['ccc'], array('test')))
echo 'haha';
else
echo 'fuck';