- unserialize: documentation ( source)
<?php
$t = '26%7CaU0qPfB4CCAOFIxzW9F5KA%3D%3D%7CAi6ivHQUFe9lwMc1a0tVmGJNHWFd%2BVafbvsRic5iL2LE3Bh72665IZ1vDTwdKEV3%7Cb6M4oPHIy8m4KwnoveOoiQqXbFgoGc3wX261BRuOwsk%3D';
$t2 = 'GFRUXjs%2FdlCVC7fX0FKz3ARh63NPN8YsKE95yFClSrmwx%2F6ougLXENYFHSEFnw0Ql1jyc0Y3We3Zwignc8Axpg%3D%3D';
echo unserialize($t2);