PHP ActiveX

Fetch Web Pages from Local Cache

See more HTTP Examples

Demonstrates how to keep a local cache to avoid re-fetching web pages. PHP ActiveX

<?php

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

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

// Define a cache directory and set the number of levels based on the anticipated size of the cache.
$http->AddCacheRoot('c:/example/httpCache/');

// up to 256 sub-directories under the cache root will be created as needed to hold cached GET's.
$http->NumCacheLevels = 1;

// Tell the http object to fetch from the cache if possible.
$http->FetchFromCache = 1;

// Also tell the http object to update the cache with newly fetched pages.
$http->UpdateCache = 1;

// This HTTP GET should result in a cache file getting created.
$html = $http->quickGetStr('https://www.google.com/');
if ($http->LastMethodSuccess == 0) {
    print $http->LastErrorText . "\n";
    exit;
}

// The 1st GET was not from cache:
print 'Fetched from cache: ' . $http->LastFromCache . "\n";

// Fetching again will cause the page to be delivered from our local cache.
$html = $http->quickGetStr('https://www.google.com/');
if ($http->LastMethodSuccess == 0) {
    print $http->LastErrorText . "\n";
    exit;
}

// The 2nd GET is from cache:
print 'Fetched from cache: ' . $http->LastFromCache . "\n";

?>