What are the differences in behavior between Internet Explorer and Firefox when it comes to caching and loading images in PHP websites?

When it comes to caching and loading images in PHP websites, Internet Explorer and Firefox may handle the process differently. One common issue is that Internet Explorer may cache images more aggressively, leading to outdated images being displayed to users. To solve this issue, you can add cache-control headers to your PHP script to control how browsers cache images. 

<?php
// Set cache control headers to prevent aggressive caching by Internet Explorer
header("Cache-Control: no-cache, must-revalidate");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
?>

Keywords

Internet Explorer Firefox caching images PHP websites

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