Untitled

<?php
if(isset($_POST["bus"]))
{
	$validUser=$_POST["username"]=="admin" && $_POST["password"]=="password";

}
?>
<html>
<head>
	<title>My Web App</title>
</head>
<body>
<form method="post" action="hello.php">
<center>
<h1>Welcome To My Php App</h1><br>
Username : <input type="textbox" name="username"><br>
Password : <input type="password" name="password"><br>
<input type="button" value="Submit" name="submit">
  <input type="button" value="cancel" name="cancel">
</center>
</form>
</body>
</html>