Untitled

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head> </head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<body>
<?php
if(isset($_POST['submit'])) { echo "good..."; }
?>
<form id="f" name="f" action="" method="post">
<input type='button' name='submit' id="submit" value='submit' />
</form>
</body>
</html>