while loop question

[JackM]

I am processing a form submission using POST method. Since some of the
fields are going to be blank and I want to eliminate getting those in
the email sent to me, I have put this code together that seems to work
okay and not throw any errors:

<?php
error_reporting (E_ALL);
while(list($key , $val) = each($_POST)){
if(is_array($va l)){

foreach($val as $element)
$mesg .= "$key: $element\n";
}
if($val == "") {
unset($key,$val );
}
else
$mesg .= "$key: $val\n\n";
}

$to = 'foo@foo.com';
$subject = 'Info Submission';
$header = "From: $_POST[email]\r\n";

mail( $to,
$subject,
$mesg,
$header
);
?>

But what puzzles me is that when I echo the results of $mesg to the
page, it's fine. But when it sends to me in an email, I get an extra
period (.) about five or six lines down on every submission and I can't
find out why.

I know it's not exactly an earth-shaking problem but I'm curious as to
what I may have done wrong so I can correct it and make sure I don't
repeat it in the future.

Thanks for any help.