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copied!<p>Regarding your update, about not wanting to wait for the full page to load - I think a HTTP <code>HEAD</code> request is what you're looking for..</p> <p><a href="http://nl3.php.net/get-headers" rel="nofollow noreferrer">get_headers</a> should do this - I think it only requests the headers, so will not be sent the full page content.</p> <p><a href="https://stackoverflow.com/questions/770179/php-curl-head-request-takes-a-long-time-on-some-sites">"PHP / Curl: HEAD Request takes a long time on some sites"</a> describes how to do a <code>HEAD</code> request using PHP/Curl</p> <p>If you want to trigger the request, and not hold up the script at all, there are a few ways, of varying complexities..</p> <ul> <li>Execute the HTTP request as a background process, <a href="https://stackoverflow.com/questions/45953/php-execute-a-background-process/45966">php execute a background process</a> - basically you would execute something like <code>"wget -O /dev/null $carefully_escaped_url"</code> - this will be platform specific, and you have to be <em>really</em> careful about escaping parameters to the command</li> <li><a href="http://www.welldonesoft.com/technology/articles/php/forking/" rel="nofollow noreferrer">Executing a PHP script in the background</a> - basically the same as the UNIX process method, but executing a PHP script rather than a shell command</li> <li>Have a "job queue", using a database (or something like <a href="http://xph.us/software/beanstalkd/" rel="nofollow noreferrer">beanstalkd</a> which is likely overkill). You add a URL to the queue, and a background process or cron-job routinely checks for new jobs and performs requests on the URL</li> </ul>

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