nx@localhost ~/data/prog/php/tests/tree $ php test.tree.php 
tree Object
(
    [tree] => Array
        (
            [value] => Racine
            [children] => Array
                (
                    [Premier fils de racine] => tree Object
                        (
                            [tree] => Array
                                (
                                    [children] => Array
                                        (
                                            [Fils du fils : petit-fils !] => tree Object
                                                (
                                                    [tree] => Array
                                                        (
                                                        )

                                                )

                                        )

                                )

                        )

                    [Deuxieme fils de racine] => tree Object
                        (
                            [tree] => Array
                                (
                                    [children] => Array
                                        (
                                            [Deuxieme petit-fils] => tree Object
                                                (
                                                    [tree] => Array
                                                        (
                                                        )

                                                )

                                            [Troisieme petit-fils et frere du deuxi�me petit-fils] => tree Object
                                                (
                                                    [tree] => Array
                                                        (
                                                        )

                                                )

                                        )

                                )

                        )

                )

        )

)