Check File Size using HEAD Request

Demonstrates how to quickly check the size of an HTTP download by using the HEAD request.

Download Chilkat HTTP ActiveX

<?php

$http = new COM("Chilkat.Http");

//  Any string unlocks the component for the 1st 30-days.
$success = $http->UnlockComponent('Anything for 30-day trial');
if ($success != true) {
    print $http->lastErrorText() . "\n";
    exit;
}

//  Send a HEAD request to get the response header:

// response is a Chilkat.HttpResponse
$response = $http->GetHead('http://www.chilkatsoft.com/download/ChilkatDotNet2.msi');

if (is_null($response)) {
    print $http->lastErrorText() . "\n";
}
else {

    //  The ContentLength property of the HTTP response is
    //  the size of the remote file:
    print 'Size of download = ' . $response->ContentLength . "\n";

}

?>