这里alertmes($mes,$url),照着敲 怎么会在不停的刷新？？

equire_once 'dir_func.php';

require_once 'file_func.php';

require_once 'common.func.php';

$path ="filenum";

$path =$_REQUEST['path']?$_REQUEST['path']:$path;

$filename=$_REQUEST['filename'];

$act =$_REQUEST['act'];

$info =readDirectory($path);

$redirect ="index.php?path={$path}";

if($act="createFile"){

//echo $path;

//echo $filename;

$msg = createFile($filename);

             alertmsg($msg,"index.php?path=$path");