使用PHP获取目录的层次结构

function get_directory_structure($directory) {
    $structure = array();
    $dir = opendir($directory);
    while (($file = readdir($dir)) !== false) {
        if ($file != '.' && $file != '..') {
            if (is_dir($directory . '/' . $file)) {
                $structure[$file] = get_directory_structure($directory . '/' . $file);
            } else {
                $structure[] = $file;
            }
        }
    }
    closedir($dir);
    return $structure;
}

$structure = get_directory_structure('/path/to/directory');
print_r($structure);