Method setPermissions

/**
 * Chmods files and directories recursively to given permissions.
 *
 * @param   string  $path        Root path to begin changing mode [without trailing slash].
 * @param   string  $filemode    Octal representation of the value to change file mode to [null = no change].
 * @param   string  $foldermode  Octal representation of the value to change folder mode to [null = no change].
 *
 * @return  boolean  True if successful [one fail means the whole operation failed].
 *
 * @since   1.7.0
 */
public static function setPermissions($path, $filemode = '0644', $foldermode = '0755')
{
    // Initialise return value
    $ret = true;
    if (is_dir($path)) {
        $dh = opendir($path);
        while ($file = readdir($dh)) {
            if ($file != '.' && $file != '..') {
                $fullpath = $path . '/' . $file;
                if (is_dir($fullpath)) {
                    if (!self::setPermissions($fullpath, $filemode, $foldermode)) {
                        $ret = false;
                    }
                } else {
                    if (isset($filemode)) {
                        if (!@chmod($fullpath, octdec($filemode))) {
                            $ret = false;
                        }
                    }
                }
            }
        }
        closedir($dh);
        if (isset($foldermode)) {
            if (!@chmod($path, octdec($foldermode))) {
                $ret = false;
            }
        }
    } else {
        if (isset($filemode)) {
            $ret = @chmod($path, octdec($filemode));
        }
    }
    return $ret;
}