I'm trying to install Phalcon PHP on my VPS server running Ubuntu 12 LTS as per http://debrepo.frbit.com/ - which is a official repo. But I am getting php5-igbinary : Depends: phpapi-20100525 but it is not installable error. Please help. I already developed some application in Phalcon PHP on Windows. Now I want to deploy it into VPS server.