<?php
$url = 'http://s...content-available-to-author-only...e.com/?test=Что это';
PD9waHAKCiR1cmwgPSAnaHR0cDovL3MuLi5jb250ZW50LWF2YWlsYWJsZS10by1hdXRob3Itb25seS4uLmUuY29tLz90ZXN0PdCn0YLQviDRjdGC0L4nOwpwYXJzZV9zdHIoJHVybCwgJHIpOwplY2hvIGFycmF5X2tleV9maXJzdCgkcikgLiAnPScgLiB1cmxlbmNvZGUoY3VycmVudCgkcikpOw==