dpkg -l |grep apache
ii  apache2                         2.4.7-1ubuntu4.1                     amd64        Apache HTTP Server
ii  apache2-bin                     2.4.7-1ubuntu4.1                     amd64        Apache HTTP Server (binary files and modules)
ii  apache2-data                    2.4.7-1ubuntu4.1                     all          Apache HTTP Server (common files)
ii  apache2-doc                     2.4.7-1ubuntu4.1                     all          Apache HTTP Server (on-site documentation)
ii  apache2-mpm-prefork             2.4.7-1ubuntu4.1                     amd64        transitional prefork MPM package for apache2
ii  apache2-utils                   2.4.7-1ubuntu4.1                     amd64        Apache HTTP Server (utility programs for web servers)
ii  libapache2-mod-passenger        4.0.37-2                             amd64        Rails and Rack support for Apache2
ii  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.5                amd64        server-side, HTML-embedded scripting language (Apache 2 module)