note 74339 added to ref.xml

I have a website where i use the XML but the php code apeare in the page, i dont know why? Please try to help me! link http://www.univ-k.rnu.tn/ar/index.php ---- Server IP: 69.147.83.197 Probable Submitter: 196.203.190.194 (proxied: 192.168.1.202, 196.203.190.194) ---- Manual Page -- http://www.php.net/manual/en/ref.xml.php Edit -- https://master.php.net/note/edit/74339 Del: integrated -- https://master.php.net/note/delete/74339/integrated Del: useless -- https://master.php.net/note/delete/74339/useless Del: bad code -- https://master.php.net/note/delete/74339/bad+code Del: spam -- https://master.php.net/note/delete/74339/spam Del: non-english -- https://master.php.net/note/delete/74339/non-english Del: in docs -- https://master.php.net/note/delete/74339/in+docs Del: other reasons-- https://master.php.net/note/delete/74339 Reject -- https://master.php.net/note/reject/74339 Search -- https://master.php.net/manage/user-notes.php