What are the potential pitfalls of browser caching when using PHP files?

Browser caching can lead to outdated content being displayed to users if changes are made to PHP files but the browser continues to serve cached versions. To prevent this, you can add cache-control headers to your PHP files to control how browsers cache them. By setting the cache-control header to no-cache, you can ensure that the browser always requests the latest version of the PHP file from the server. 

<?php
header("Cache-Control: no-cache, must-revalidate");
// Your PHP code here
?>

Keywords

browser caching PHP files cache control cache headers expiration time

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