Autoloading classes when not in same directory as zend library

I've decided that rather than have a copy of the Zend Framework in each application's directory, I'd like to keep it on one location on the server, with the one copy 开发者_StackOverflow中文版used by all my websites. However, I'd like my app's custom classes to still be within the application folder. So a folder structure a bit like this:

webroot
 |...library
 |     |......Zend
 |
 |...app1
 |     |.....Library
 |              |.......App1
 |
 |...app2
       |.....Library
                |.......App2

How can I get Zend Loader to automatically find the classes in App1 and App2? (preferably by just changing something in application.ini or bootstrap.php)

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You can create a single library directory, with symlinks to the actual live shared code:

webroot/library/Zend -> /path/to/Zend/library/Zend
webroot/library/App1 -> /path/to/App1/library/App1
webroot/library/App2 -> /path/to/App2/library/App2

Then, you only need webroot/library in your path.

To handle version updates, you can simply change the symlink to point to a new install:

webroot/library/Zend -> /path/to/Zend-test/library/Zend

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The Zend Loader will use your php include_path to find files to load.

Simply add webroot/library to your include_path (which you can either do in php.ini or in your bootstrap) and the autoloader should be able to find the framework.

If you are keen to have a shared version of Zend you may as well just use pear (http://pear.zfcampus.org/) to install it and then as long as you have your include_path set to look in your pear dir ( /usr/share/php on my machine ) then you are good to go.

I would advise only to do this for dev machines though, as others have said it's a good idea to be able to control the versions of zend for each app when in production.