PHP programming forum. Ask questions or help people concerning PHP code. Don't understand a function? Need help implementing a class? Don't understand a class? Here is where to ask. Remember to do your homework!
May be your php has been compiled with --enable-trans-sid option. That will append the SID automatically to relative links. This eyplains why the parameter PHPSESSID is sent twice. <?=SID?> sends it and the auto-append, too