Get download speed of your webserver

Do you ever wanted to know the exact download speed of your webserver (or any other?) If yes, you’ll love that code. You just have to initialize the $url variable with any resources from the webserver (images, pdf, etc), place the file on your server and point your browser to it. The output will be a full report of download speed.

<?php error_reporting(E_ALL | E_STRICT);

// Initialize cURL with given url
$url = 'http://download.bethere.co.uk/images/61859740_3c0c5dbc30_o.jpg';
$ch = curl_init($url);

curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, 'Sitepoint Examples (thread 581410; http://www.sitepoint.com/forums/showthread.php?t=581410)');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 2);
curl_setopt($ch, CURLOPT_TIMEOUT, 60);

set_time_limit(65);

$execute = curl_exec($ch);
$info = curl_getinfo($ch);

// Time spent downloading, I think
$time = $info['total_time']
      - $info['namelookup_time']
      - $info['connect_time']
      - $info['pretransfer_time']
      - $info['starttransfer_time']
      - $info['redirect_time'];

// Echo friendly messages
header('Content-Type: text/plain');
printf("Downloaded %d bytes in %0.4f seconds.\n", $info['size_download'], $time);
printf("Which is %0.4f mbps\n", $info['size_download'] * 8 / $time / 1024 / 1024);
printf("CURL said %0.4f mbps\n", $info['speed_download'] * 8 / 1024 / 1024);

echo "\n\ncurl_getinfo() said:\n", str_repeat('-', 31 + strlen($url)), "\n";
foreach ($info as $label => $value)
{
    printf("%-30s %s\n", $label, $value);
}
?>