create user dot php

<?php

session_start();
if($_SESSION['login'] !="OK")
{
header(Location:'login.php');
exit();
}
?>

<html>
<body>

<h1>Create a new user</hr>

<p>Please enter details for the new user:</p>
<form action="insert_user.php"method="post">
<table>
<tr>
<td align="right">Username:</td>
<td><input size="20" type="text" size="20" maxlength="15" name="new_username"></td>
</tr>
<tr>
<td align="right">Password:</td>
<td><input size="20" type="password" size="20" maxlength="15" name="new_password"></td>
</tr>
<tr>
<td> </td>
<td colspan="2" align="left"><input type="submit" value="Create user"></td>
</tr>
</table>
</form>
</body>
</html>