This is what you've got right?
which is equivalent to this:
But what I think you're wanting is this:
of course URL encoding the message if there is any chance there is a special character in there at all. URLEncode is a system expression. So you'll probably finish with this:
But then you need to make sure you decode within the php script so the variable assignment lines will look more like:
if (isset($_GET['user'])) {$user = urldecode($_GET['user']);} else {$user = urldecode($_POST["name"]);}
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