Are there any specific PHP functions or techniques that can be used to control browser caching behavior for dynamically generated images?

When dynamically generating images in PHP, it is important to control browser caching behavior to ensure that updated images are displayed to users. One way to achieve this is by setting appropriate caching headers in the HTTP response. By setting the cache-control header to 'no-cache' or 'max-age=0', you can instruct the browser to always request the latest version of the image from the server. 

<?php
// Set caching headers to prevent browser caching of dynamically generated images
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 functions browser caching dynamically generated images cache control HTTP headers

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