PHP URL Recursive Redirect Checker

<?php

    function get_curl_data($url, &$curl_data = array(), $redirect_count = 0) {

        $url = url_path_encode(trim($url));

        $timeout = 500;
        $conn_timeout = 500;
        $max_redirect = 10;

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_HEADER, true);
        curl_setopt($ch, CURLOPT_NOBODY, TRUE);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (X11; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0");
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $conn_timeout);
        $data = curl_exec($ch);

        $curl_data[$url]['header'] = curl_getinfo($ch);
        curl_close($ch);

        // Check if Redirection codes between 301 - 308 is returned
        if ( substr($curl_data[$url]['header']['http_code'], 0, 2) === '30' ) {

            $curl_data[$url]['redirect_count'] = ++$redirect_count;
            $redirect_url = &$curl_data[$url]['header']['redirect_url'];

            // Check for max redirects
            if ($redirect_count == $max_redirect) {
                $redirect_url = "{$redirect_url} ... [max redirection reached]";
                return $curl_data;
            }

            // Check for infinite loop
            if (isset($curl_data[$redirect_url])) {
                $redirect_url = "{$redirect_url} ... [infinite loop detected]";
                return $curl_data;
            }

            $curl_data = get_curl_data($redirect_url, $curl_data, $redirect_count);
        }

        return $curl_data;
    }

    // Check url recursive redirects
    $url = 'http://www.domain.com/redirect1';
    $curl_data = get_curl_data($url);

?>