What you want is a lamp, not wamp

Here you go: http://tinyurl.com/9qdkz2

$str = "%20";
$str2 = urldecode($str);
echo $str2;

-


Note, some browsers may change - to %20 automatically as long as it's in a link, and there's nothing you can do about it, AFAIK.

While you can wrap at a certain amount of characters in plain text emails, I'm not certain about the ability to wrap at exactly 400 pixels.

What you can do is send and html email instead, and put...

Also, session variables can be exploited if you are in a shared hosted environment.

Someone with ssh access to the shared server can get a valid session id from where PHP stores them and pretend...