$ apt-cache search php|grep gd php5-gd - GD module for php5 $ sudo apt-get install php5-gd $ apt-cache search php|grep zip libphp-pclzip - zip archive manager class for PHP $ sudo apt-get install libphp-pclzip $ sudo apt-get install libapache2-modxslt php-xml-htmlsax3 php-xml-parser php-xml-rss php-xml-serializer php-xml-util