What are the potential pitfalls of using the printf function to prevent image caching in browsers?

Using the printf function to prevent image caching in browsers can lead to potential pitfalls such as inconsistent behavior across different browsers or devices, as the caching mechanism may not be reliably bypassed. It is recommended to use proper HTTP headers or meta tags to control caching behavior for images. 

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

Keywords

printf image caching browsers PHP pitfalls

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