What are the best practices for efficiently selecting and displaying random images from a directory in PHP?

When selecting and displaying random images from a directory in PHP, it is important to efficiently handle the file selection process and ensure that each image is displayed only once. One way to achieve this is by using an array to store the file names, shuffling the array to randomize the order, and then displaying each image one by one.

<?php
// Define the directory containing the images
$directory = 'path/to/directory/';

// Get an array of all image files in the directory
$files = glob($directory . '*.{jpg,jpeg,png,gif}', GLOB_BRACE);

// Shuffle the array to randomize the order
shuffle($files);

// Loop through the array and display each image
foreach ($files as $file) {
    echo '<img src="' . $file . '" alt="Random Image">';
}
?>