(PHP ActiveX) Get Size of File on Web Server

Demonstrates how to send a HEAD request to fetch information about a file on a web server, which hopefully includes the Content-Length in the response header.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http = new COM("Chilkat.Http");

// resp is a Chilkat.HttpResponse
$resp = $http->GetHead('https://nodejs.org/dist/v10.16.1/node-v10.16.1-win-x64.zip');
if ($http->LastMethodSuccess == 0) {
    print $http->LastErrorText . "\n";
    exit;
}

// Examine the response header.
print $resp->Header . "\n";

// Here is a sample response header:

// Date: Thu, 01 Aug 2019 12:47:27 GMT
// Content-Type: application/zip
// Content-Length: 17457922
// Connection: keep-alive
// Set-Cookie: __cfduid=da5b78dcdd8171683c5a578eb9c9f88c81564663647; expires=Fri, 31-Jul-20 12:47:27 GMT; path=/; domain=.nodejs.org; HttpOnly
// Last-Modified: Wed, 31 Jul 2019 18:21:57 GMT
// ETag: "5d41dc45-10a6302"
// Accept-Ranges: bytes
// Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
// Server: cloudflare
// CF-RAY: 4ff7ebb32ac4e1e2-ORD

// Get the Content-Length header.
$contentLengthStr = $resp->getHeaderField('Content-Length');
// If the header exists...
if ($resp->LastMethodSuccess == 1) {
    print 'Content-Length: ' . $contentLengthStr . "\n";
    // Your application can convert the contentLengthStr to an integer and then use it....
}


?>