PHP从文件夹中提取随机图像

<?php
$folder = '/path/to/images';
$images = scandir($folder);
$random_image = $images[array\_rand($images)];
$image_contents = file\_get\_contents($folder . '/' . $random_image);
?>

<img src=" <?php echo $folder ?>/<?php echo $random_image; ?>" alt="Random Image" />