Recupérer les thèmes activés drupal

Pour récuperer la liste des thèmes activés sur votre site Drupal, il existe une function Drupal qui retourne les données de chacun dont voici le nom :

<?php system_theme_data(); ?>

Voici un extrait du retrour:

Array
(
    [minnelli] => stdClass Object
        (
            [filename] => themes/garland/minnelli/minnelli.info
            [basename] => minnelli.info
            [name] => minnelli
            [info] => Array
                (
                    [name] => Minnelli
                    [description] => Tableless, recolorable, multi-column, 
                                            fixed width theme.
                    [version] => 6.14
                    [core] => 6.x
                    [base theme] => garland
                    [stylesheets] => Array
                        (
                            [all] => Array
                                (
                                    [minnelli.css] => 
                                     themes/garland/minnelli/minnelli.css
                                )

                        )

                    [project] => drupal
                    [datestamp] => 1253130027
                    [regions] => Array
                        (
                            [left] => Left sidebar
                            [right] => Right sidebar
                            [content] => Content
                            [header] => Header
                            [footer] => Footer
                        )

                    [features] => Array
                        (
                            [0] => comment_user_picture
                            [1] => favicon
                            [2] => mission
                            [3] => logo
                            [4] => name
                            [5] => node_user_picture
                            [6] => search
                            [7] => slogan
                            [8] => primary_links
                            [9] => secondary_links
                        )

                    [scripts] => Array
                        (
                            [script.js] => themes/garland/minnelli/script.js
                        )

                    [screenshot] => themes/garland/minnelli/screenshot.png
                    
 => 4.3.5
                    [engine] => phptemplate
                )
 
            [base_themes] => Array
                (
                    [garland] => Garland
                )
 
            [owner] => themes/engines/phptemplate/phptemplate.engine
            [prefix] => phptemplate
            [type] => theme
            [status] => 0
            [throttle] => 0
            [schema_version] => -1
            [old_filename] => themes/garland/minnelli/minnelli.info
        )
)
</pre>