lister un dossier avec php

function getFiles($directory) {
    // Try to open the directory
    if($dir = opendir($directory)) {
        // Create an array for all files found
        $tmp = Array();
        // Add the files
        while($file = readdir($dir)) {
            // Make sure the file exists
            if($file != "." && $file != ".." && $file[0] != '.') {
                // If it's a directory, list all files within it
                if(is_dir($directory . "/" . $file)) {
                    $tmp2 = getFiles($directory . "/" . $file);
                    if(is_array($tmp2)) {
                        $tmp = array_merge($tmp, $tmp2);
                    }
                } else {
                    array_push($tmp, $directory . "/" . $file);
                }
            }
        }
        // Finish off the function
        closedir($dir);
        return $tmp;
    }
}