What are the potential issues with displaying PNG images in Internet Explorer when using PHP?

When displaying PNG images in Internet Explorer using PHP, the issue may arise due to the lack of proper Content-Type headers being set. To solve this problem, you can explicitly set the Content-Type header to "image/png" before outputting the image data.

<?php
// Set the Content-Type header to "image/png"
header('Content-Type: image/png');

// Output the PNG image data
echo file_get_contents('image.png');
?>