What is wrong with my php?

I’m sorry for this but I am new to php and I have used the tutorials to get a mail to form to work in flash, the flash part is working but when I view the php file in a browser it keeps telling me there are errors in line 3, what am I doing wrong?

$to = “[email protected]…co.uk”;
$msg =_"$email

$msg .=_”$subject

$msg .=_”$message

mail ($to ,_ $subject ,_ $msg ,_ "For:Mail Us