How can browser caching be controlled or prevented in PHP to ensure up-to-date data is displayed?

Browser caching can be controlled or prevented in PHP by sending appropriate HTTP headers to instruct the browser not to cache certain resources. One way to achieve this is by setting the "Cache-Control" header to "no-cache" or "max-age=0". This ensures that the browser always requests the latest version of the resource from the server, rather than using a cached version. 

<?php
header("Cache-Control: no-cache, must-revalidate");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
?>

Keywords

PHP browser caching cache control HTTP headers data freshness

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