foo.php

<html>
<head>
<title>Hello </title>
</head>
<body>
<h1>Enter your name please</h1>
<h2>this form for entering your name</h2>
<form method = "post"
      action = "boo.php">
Enter your name here:
<input type ="text"
       name = "username"
       value = ""
<br>  
<input type = "submit">
</form>
</body>
</html>