- var_dump: documentation ( source)
- urldecode: documentation ( source)
<?php
var_dump(urldecode("access_token=CAACQwvxMvOUBAOqxs3JsTPAB4XP0O6FOvMtYMT1fw5t6kDLPNxZB8s1dE9NZB8ZCoSm0EgrgGDnTsEsZAI3ADItH4Xpzpx7dXMWWbPADk3CTvYdmjoYYeghrV8Ol9Mct5G1hBQVZBVaj1BAEZBgbRzqQQ4NBdu7r3xMP2OWA5XMiaXJDwFk9JTSn0MGhLuHYMZD&expires=5176937"));