如何在PHP中使用scandir只获取图像？

<?php
$directory = "path/to/your/images/directory";
$images = array();
$allFiles = scandir($directory);

foreach ($allFiles as $file) {
    $fileExtension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
    if (in_array($fileExtension, array('jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp'))) {
        $images[] = $file;
    }
}

print_r($images);
?>