I have a PHP-handler for sending applications in the mail, it is the element .@$_SERVER['HTTP_REFERER']. to specify the link from which the client came.
Part of this link is in Cyrillic (dynamic utm-tags). In this mail link comes the following: test.ru/?utm_source=%D0%A2%D0%95%D0%A1%D0%A2
Is it possible to do to get the email link displayed in Cyrillic or "on the fly" converted into transliteration?