junk from my forms output

[hanson zhou <hmzhou@xxxxxxxxx>]

I have the following in a file called "hello.php" in my htdocs directory (Apache webroot). 

 

<form action="" method="post">
 <p>Your name: <input type="text" name="name" /></p>
 <p>Your age: <input type="text" name="age" /></p>
 <p><input type="submit" /></p>
</form>

 

as well as the following in a file "action.php", also in the same directory.

 

Hi <?php echo htmlspecialchars($_POST['name']); ?>.
You are <?php echo (int)$_POST['age']; ?> years old.

 

When I click on the submit button of the form in hello.php, it should say something like:

"Hi Hanson.  You are 33 years old."  But instead of just saying that it also appends a bunch of junk at the beginning like this:

 

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fcharset0 Arial;}} {\*\generator Msftedit 5.41.21.2509;}\viewkind4\uc1\pard\f0\fs20 Hi hanson .\par You are 33 years old.\par } �

 

Can someone help me with this?  Why does my forms reply from action.php contain so much junk?  I have a Windows installation of PHP and Apache. 

 

thanks,

-Hanson