clear_cache.php

<?
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");

BXClearCache(true, '/');

if(function_exists('opcache_reset')) {
    opcache_reset();
}

//require($_SERVER['DOCUMENT_ROOT'].'/bitrix/header.php');
echo 'ok';
//require($_SERVER['DOCUMENT_ROOT'].'/bitrix/footer.php');