Is it possible to instruct the browser to clear its cache programmatically in PHP?

When a website updates its resources, such as CSS or JavaScript files, users may still see the old versions due to browser caching. To address this issue, you can instruct the browser to clear its cache programmatically by setting cache-control headers in the HTTP response. This tells the browser not to cache the resources or to revalidate them before using the cached versions. 

<?php
header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Pragma: no-cache"); // HTTP/1.0
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past

// Your PHP code here
?>

Keywords

PHP browser cache clear cache HTTP headers caching mechanisms

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