i have tried to use piwik in a zend framework project so i have copy the example on the [Calling the API From within PHP](http://dev.piwik.org/trac/wiki/API/CallingTechniques) page and paste it in a zf controller and got the error “cannot redeclare class Zend_Exception”

this happen very early in the process :

```
index.php l 45 : require_once “FrontController.php”;
```

i think the easiest way to solve it is to change the set_include_path argument with get_include_path() in first position so if zend lib is already used the files will be included from there but :
1) it will slow down every other inlusion adding folders to look in at the top of the stack

2) maybe some compatibility pb can happen between piwik version and the user version (users need to have up piwik version of zf or later to ensure full compat, except if major breaking changes are introduced into zf but that seems unlikely)

At first i tough about a config entry like ‘overwrite ZF Folder = my/folder/to/ZF’
but when the error occur there is no access to the config file yet …

PS : maybe same pb can happen with other third party librarys (smarty is used a lot too …)