title: Use library from other Zend Project
body: <p>I have two project in Zend Framework, so I have two librarys different, but I need to use some classes from the other project.</p>
  
  <p>Did you know how can I add those classes into my zend project whithout copy, because when i change one, I must have to change the other??
  bouth are in the same server</p>
  
  <p>/www/project1/library/rules/clasess.php</p>
  
  <p>/www/project2/   &lt;-- need the class in this project`  </p>