install ZendFramework on ubuntu

1. download and unzip the latest version of ZendFramework to /home/dan/
2. add the zend framework's library to PHP's include path:
    $cd /etc/php5/apache2
    $sudo emacs php.ini
    find the include_path in the php.ini file and edit it:
    include_path = "/home/dan/ZendFramework/library:.:/usr/share/php"
3. restart apache2: $sudo /etc/init.d/apache2 restart
4. create project:
    $zf.sh create project quickstart

Issue:
1. make sure the ZendFramework's library folder is not empty.

2. if install ZendFramework by: sudo apt-get zend-framework
    remove it by: sudo apt-get remove zend-framework
    it might tell you:
    The following packages were automatically installed and are no longer required:
    libzend-framework-php linux-headers-2.6.28-11-generic linux-headers-2.6.28-11
    Use 'apt-get autoremove' to remove them.
    then run: sudo apt-get autoremove