I am having a serious problem with some php scripts I don't

I am having a serious problem with some php scripts I don't know what these people did although its not working on the site http://www.matchudate.com I have tried very hard to find out why this has code that's showing on the mobile login it is only doing this on iphone 4s as well as the Samsung galaxy 5s.
There is code that is showing on the login this has happened to me over the last few months when I noticed this I thought it was my phone then I started to see this on all phones.
They seem to think nothing is wrong can someone please verify I am not crazy here.

Regards Vinny