What are the potential pitfalls of using array_rand() to select a random element from an array of images?

Using array_rand() to select a random element from an array of images can potentially lead to selecting the same image multiple times in a row, as it does not guarantee unique results. To ensure that each image is selected only once until all images have been shown, you can shuffle the array of images first and then iterate through them in order.

// Shuffle the array of images
shuffle($images);

// Iterate through the shuffled array
foreach($images as $image) {
    // Display the image
    echo '<img src="' . $image . '" alt="Random Image">';
}