.extensions.php

<?php
/***
 *	Copyright (c) 2018-2020, FreeCollective. All rigths reserved
 *
 *	This product is licensed under the GNU GPLv3.
 *	Use, distribution, and modification of this source code is
 *	restricted to non-commercial enhancements to products from
 *	FreeCollective. All other use, distribution, or modification is
 *	prohibited without written permission from FreeCollective.
 *
 ***/
// extensions
if (isset($extensions)) {
	$extensions = explode(' ', $extensions);
	foreach ($extensions as $value) {
		switch ($value) {
			case "randomad":
				//only for php7
				if ($randadenabled) {
					$randad = mt_rand(0, $randadmax); 
					$ads_image = "$serverurl/ad$randad.png";
				}
				break;
			case "useragent":
				if ($uaenabled && $_SERVER['HTTP_USER_AGENT'] != $ua["ua"]) {
					die($ua["uamsg"]);
				}
				break;
			case "ua":
				if (geoip_country_name_by_name($_SERVER['REMOTE_ADDR']) == "Ukraine") {
					$apiurl = "http://vk-api-proxy.xtrafrancyz.net";
				}
				break;
		}
	}
}