iFixit/php-saml — pull request #2 by danielbeardsley (2013-09-03 09:42:28+00:00)
Title: Redirect URL: support existing params

$url = "http://blah.com?x=y" . "?Z=" . $value;
will obviously not work because the query part of the url now has two ?s

Previously if your url already contained query params, the generated url
would be incorrect.