Php Mailer Form Help!

helo everyone, just got a problem with my code. actually i got it here kirupa tutorial about PHP mailer form. it doest work on me. i dont know what the errors are. kindly pls check?

MY CODE:
<?PHP
$to = “webmaster@site.com”;
$subject = “Results from your Request Info form”;
$headers = “From: Form Mailer”;
$forward = 0;
$location = “”;
$date = date (“l, F jS, Y”);
$time = date (“h:i A”);

$msg = "Below is the result of your feedback form. It was submitted on $date at $time.

“;
if ($_SERVER[‘REQUEST_METHOD’] == “POST”) {
foreach ($_POST as $key => $value) {
$msg .= ucfirst ($key) .” : ". $value . "
“;
}
}
else {
foreach ($_GET as $key => $value) {
$msg .= ucfirst ($key) .” : ". $value . "
";
}
}
mail($to, $subject, $msg, $headers);
if ($forward == 1) {
header (“Location:$location”);
}
else {
echo “Thank you for submitting our form. We will get back to you as soon as possible.”;
}
?>

THIS IS THE ERROR:

it opens a pop up windows saying: do you want to download the file? the option buttons are: OPEN, SAVE, CANCEL.

its like downloading a file on the internet.

help please. thanks

thewishmaster.