Can PHP automatically clear its own cache for images or is manual intervention required?

When serving images in PHP, the browser may cache the images, leading to outdated images being displayed even after they have been updated on the server. To ensure that the latest version of the images is always displayed, you can add a cache-busting query parameter to the image URLs. This parameter can be a timestamp or a version number that is updated whenever the image changes, forcing the browser to fetch the new image.

<img src="image.jpg?<?php echo filemtime('image.jpg'); ?>" alt="Image">