dpkg -l | grep apache
ii  apache2                                2.2.22-1ubuntu1                         Apache HTTP Server metapackage
ii  apache2-mpm-prefork                    2.2.22-1ubuntu1                         Apache HTTP Server - traditional non-threaded model
ii  apache2-utils                          2.2.22-1ubuntu1                         utility programs for webservers
ii  apache2.2-bin                          2.2.22-1ubuntu1                         Apache HTTP Server common binary files
ii  apache2.2-common                       2.2.22-1ubuntu1                         Apache HTTP Server common files
ii  libapache2-mod-php5                    5.3.10-1ubuntu3.1                       server-side, HTML-embedded scripting language (Apache 2 module)