How can PHP be used to prevent caching in browsers and web servers?

To prevent caching in browsers and web servers, you can use PHP to send headers that instruct the browser not to cache the content. This can be achieved by setting the "Cache-Control" and "Expires" headers to specific values that prevent caching. 

<?php
// Prevent caching in browsers and web servers
header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP 1.1.
header("Pragma: no-cache"); // HTTP 1.0.
header("Expires: 0"); // Proxies.
?>

Keywords

PHP caching browsers web servers prevent

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