How can browser caching impact the display of images on a PHP forum, and what can be done to prevent this issue?

Browser caching can impact the display of images on a PHP forum by causing outdated images to be displayed instead of the latest ones. To prevent this issue, you can add cache-control headers to the image responses to control how long the browser caches the images. 

// Set cache control headers to prevent browser caching of images
header("Cache-Control: no-cache, must-revalidate");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");

Keywords

browser caching images PHP forum prevent display

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