Zend\Diactoros\ServerRequestFactory::marshalRequestUri PHP Method

    public static function marshalRequestUri(array $server)
    {
        // IIS7 with URL Rewrite: make sure we get the unencoded url
        // (double slash problem).
        $iisUrlRewritten = self::get('IIS_WasUrlRewritten', $server);
        $unencodedUrl = self::get('UNENCODED_URL', $server, '');
        if ('1' == $iisUrlRewritten && !empty($unencodedUrl)) {
            return $unencodedUrl;
        }
        $requestUri = self::get('REQUEST_URI', $server);
        // Check this first so IIS will catch.
        $httpXRewriteUrl = self::get('HTTP_X_REWRITE_URL', $server);
        if ($httpXRewriteUrl !== null) {
            $requestUri = $httpXRewriteUrl;
        }
        // Check for IIS 7.0 or later with ISAPI_Rewrite
        $httpXOriginalUrl = self::get('HTTP_X_ORIGINAL_URL', $server);
        if ($httpXOriginalUrl !== null) {
            $requestUri = $httpXOriginalUrl;
        }
        if ($requestUri !== null) {
            return preg_replace('#^[^/:]+://[^/]+#', '', $requestUri);
        }
        $origPathInfo = self::get('ORIG_PATH_INFO', $server);
        if (empty($origPathInfo)) {
            return '/';
        }
        return $origPathInfo;
    }