What are some best practices for preventing browser caching of specific elements in PHP?

Browser caching can sometimes cause issues with displaying updated content on a webpage. To prevent specific elements from being cached by the browser, you can add a unique query string to the URL of the element. This query string can be generated dynamically based on the content of the element, ensuring that the browser always fetches the latest version. 

<?php
$element_content = "Lorem ipsum dolor sit amet";
$cache_buster = md5($element_content);

echo '<img src="image.jpg?cache='.$cache_buster.'" alt="Image">';
?>

Keywords

PHP browser caching cache control headers cache busting

Related Questions