What are the potential issues or challenges when randomly selecting and displaying images on a webpage using PHP?

One potential issue when randomly selecting and displaying images on a webpage using PHP is that the same image may be displayed multiple times in a row, leading to a poor user experience. To solve this, you can store the list of displayed images in a session variable and check against this list before displaying a new image. 

session_start();

$images = ['image1.jpg', 'image2.jpg', 'image3.jpg', 'image4.jpg'];
$displayedImages = $_SESSION['displayed_images'] ?? [];

do {
    $randomImage = $images[array_rand($images)];
} while (in_array($randomImage, $displayedImages));

array_push($displayedImages, $randomImage);
$_SESSION['displayed_images'] = $displayedImages;

echo '<img src="' . $randomImage . '" alt="Random Image">';

Keywords

random selection image display webpage PHP challenges

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