<?php

/** d3B#g */

error_reporting(E_ALL ^ E_NOTICE);
ini_set('display_errors', TRUE);

set_time_limit(15);

/** meh codez is so fast I need to use sleep() to make it look like it's doing something */
# sleep(rand(0,5));

$url = $_GET['url'];

if ( ! filter_var($url, FILTER_VALIDATE_URL))
{
    exit(1);
}

/** dump var */

$output = NULL;

main($url, $output);

echo $output;

exit(1);

/** main function */

function main($url, &$output)
{

    $http = new HTTP();
    $response = $http->curl($url);
    $headers = $http->parse_headers($response);

    if(isset($headers['location']))
    {
        $output .= sprintf('HTTP: %s, Length: %s, Redirected to: %s ', $headers['http'], $headers['content-length'], $headers['location']);
        main($headers['location'], $output);
        return;
    }

    if (empty($response))
    {
        /** （╯°□°）╯︵ ┻━┻ */
        $output = 'HTTP Request Failed.';
        return;
    }

    $output .= sprintf('HTTP: %s, Length: %s', $headers['http'], $headers['content-length']);
}

/** HTTP mockup class */

class HTTP
{
    function curl($url, $headers = array())
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20100101 Firefox/14.0.1');
        curl_setopt($ch, CURLOPT_HEADER, TRUE);
        curl_setopt($ch, CURLOPT_NOBODY, TRUE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }

    function parse_headers($headers)
    {
        $headers = explode("\n", $headers);
        foreach($headers as $i => $header)
        {
            $value = explode(' ', $header);
            $key = $value[0];
            $key = strtolower(trim($key, ':'));
            if(strpos($key, 'http') !== false)
            {
                $key = 'http';

            }
            array_shift($value);
            $return[$key] = implode(' ', $value);
        }
        return $return;
    }
}