小写文件和目录改成大写文件和目录的程序

<?php
/**
 *
 * @filename template.php
 * @version 0.0.1
 * @author Mirror.Wu
 * @update 2008-7-12
 * @comment XXXXXXXXXXXXX
 */

$test_path = '/web/newg';

function rename_dir($path,$logfile)
{
    $files = scandir($path);
// unset($files[0]);

// unset($files[1]);

    foreach ($files as $key => $value)
    {
        if ($value != '.' && $value != '..')
        {
            $old_path = $path . '/' . $value;
            $upper_value = strtoupper($value);
            $new_path = $path . '/' . $upper_value;
            rename($old_path, $new_path);
            $inf = $new_path."\r\n";
            fwrite($logfile, $inf);
            echo $inf;
            if (!is_file($new_path))
            {
                rename_dir($new_path,$logfile);
            }
        }
    }
}

$handle = fopen('/web/log.txt', 'a+');
rename_dir($test_path,$handle);
fclose($handle);