My website doesn’t work in I.E. (but does in chrome and firefox)

You will never get IE to attempt to perform like the other far more modern browsers without a proper doctype. You are in quirks mode without one. Add this to your first line: <!DOCTYPE html> . Then let’s see where things are.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)