php读取目录下的所有文件

function list_files($dir){if(is_dir($dir)){if($handle = opendir($dir)){while(($file = readdir($handle)) !== false){if($file != "." && $file != ".." && $file != "Thumbs.db"){echo '<a target="_blank" href="'.$dir.$file.'" mce_href="'.$dir.$file.'">'.$file.'</a><br>'."/n";}}closedir($handle);}}}