What potential issues can arise when displaying images using PHP, especially in Safari or Chrome browsers?

Potential issues that can arise when displaying images using PHP in Safari or Chrome browsers include incorrect image rendering due to missing or incorrect image headers, caching issues that prevent the browser from displaying the updated image, or cross-origin resource sharing (CORS) restrictions that block the image from being displayed. To solve these issues, you can ensure that the correct image headers are set, clear the browser cache when updating images, and properly handle CORS restrictions by setting the appropriate headers in your PHP script.

<?php
// Set the correct image headers
header('Content-Type: image/jpeg');

// Clear browser cache
header('Cache-Control: no-cache, no-store, must-revalidate');
header('Pragma: no-cache');
header('Expires: 0');

// Handle CORS restrictions
header('Access-Control-Allow-Origin: *');

// Display the image
echo file_get_contents('image.jpg');
?>