sudo apt-get remove libapache2-mod-php5
[sudo] password for kalu: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 php5 : Depends: libapache2-mod-php5 (>= 5.3.10-1ubuntu3.21) but it is not going to be installed or
                 libapache2-mod-php5filter (>= 5.3.10-1ubuntu3.21) but it is not going to be installed or
                 php5-cgi (>= 5.3.10-1ubuntu3.21) but it is not going to be installed or
                 php5-fpm (>= 5.3.10-1ubuntu3.21) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).