Are there any existing PHP scripts or libraries that can help achieve the desired menu functionality for displaying folder directories as images with links?

To achieve the desired menu functionality of displaying folder directories as images with links, you can use the PHP library "scandir" to scan the directory and retrieve the list of files. Then, you can loop through the files, filter out any non-image files, and display them as clickable images with links.

<?php
// Directory to scan
$directory = 'path/to/your/directory';

// Scan the directory and retrieve the list of files
$files = scandir($directory);

// Loop through the files
foreach($files as $file){
    // Check if the file is an image
    if(in_array(pathinfo($file, PATHINFO_EXTENSION), array('jpg', 'jpeg', 'png', 'gif'))){
        // Display the image with a link
        echo '<a href="'.$directory.'/'.$file.'"><img src="'.$directory.'/'.$file.'" alt="'.$file.'"></a>';
    }
}
?>