- unserialize: documentation ( source)
<?php
echo unserialize('product_name=asdfasdfasdfa+fasdf&price=55&date_order=3.9.2014&date_exp=27.9.2014&license_key=asdf&password=adsf+f&invoice_number=fdd¬e=&id_product=5&edit_product=1&4eee61279e038b161bafdf677733646f=1');