如何在PHP中获取多维数组的maxium Levels

Question

我有一个这样的数组

 <?php 
    array( 
        'CHILDRENS' =>  array(
        array( 
            'CHILDRENS' =>  array(
                array( 
                    'CHILDRENS' =>  array(
                        array( 
                            'CHILDRENS' =>  array(
                            )
                        )
                    )
               )
           )
        )
    ),
    array( 
        'CHILDRENS' =>  array(
            array( 
                'CHILDRENS' =>  array(
                )
            )
        )
    ),
    array( 
        'CHILDRENS' =>  array(
            array( 
                'CHILDRENS' =>  array(
                    array( 
                        'CHILDRENS' =>  array(
                            array( 
                                'CHILDRENS' =>  array(
                                    array( 
                                        'CHILDRENS' =>  array(
                                            array( 
                                                'CHILDRENS' =>  array(
                                                    array( 
                                                        'CHILDRENS' =>  array(
                                                        )
                                                    )
                                                )
                                            )
                                        )
                                    )
                                )
                            )
                        )
                    )
                )
            )
        )
    )
)

我想知道如何获得此数组的最大值。 我试过这个：

Array PHP. How to get deep of element in array

和

Is there a way to find out how "deep" a PHP array is?

最后一种情况，它只返回第一个数组深度

感谢您的帮助。