Thread: Zend_Application & Zend_Translate - How to use the array adapter ?

I (think I) configured Zend_Applicate's translate resource to use arrays :
[PHP]
resources.translate.adapter = "array"
resources.translate.data.fileExt = ".php"
resources.translate.data.directory = APPLICATION_PATH "/translations/"
resources.translate.options.scan = "directory"
resources.translate.options.disableNotices = true
resources.translate.options.logUntranslated = true[/PHP]

I wrote 2 translation files :
[PHP]
$ ls -l application/translations/
total 16
-rw-r--r-- 1 pmuller staff 2153 Jul 16 02:47 en.php
-rw-r--r-- 1 pmuller staff 2269 Jul 16 02:47 fr.php[/PHP]

Each file contains a "return array()", like this excerpt from fr.php :
[PHP]
<?php
return array(
// Errors
'Page not found' => 'La page que vous avez demandé est introuvable',
'An error occurred' => 'Une erreur est survenue',
'Application error' => 'Erreur interne',
// Home page
'Read more' => 'Suite',
);[/PHP]

I think I missed something, because nothing is being translated.

To troubleshoot further, I enabled Zend_Translate logging feature. The logs confirm that nothing can be translated :
[PHP]
Untranslated message within 'fr': Page not found
Untranslated message within 'fr': An error occurred
Untranslated message within 'fr': Help[/PHP]
(it's the same for 'en')

I tried to rename fr.php to fr_FR.php and en.php to en_US.php, but I got no improvement.
I want Zend_Translate to translate fr_* using fr.php and en_* using en.php.

I hope someone knows what I missed.. Thanks!