PHP遍历文件夹下的所有文件和文件夹

\n";
    while ($file = $mydir->read()) {
        if (is_dir("$dir/$file") AND $file != "." AND $file != "..") {
            echo "
$file
";
            tree("$dir/$file");
        } else {
            echo "
$file
\n";
        }
    }
    echo "\n";
    $mydir->close();
}

echo "
目录为粉红色
\n";
tree("e:/www");

function tree($dir)
{
    if (is_dir($dir)) {
        if ($dh = opendir($dir)) {
            while (($file = readdir($dh)) !== false) {
                if ((is_dir($dir . "/" . $file)) && $file != "." && $file != "..") {
                    echo "文件名：", $file, "
";
                    tree($dir . "/" . $file . "/");
                } else {
                    if ($file != "." && $file != "..") {
                        echo $file . "
";
                    }
                }
            }
            closedir($dh);
        }
    }
}