php获取数组的数据大小。

Having this array:

在这个数组:

Array
(
    [_block1] => Array
        (
            [list] => Array
            (
                 [sub-list] => Array
                 (
                 )
            )
            [links] => Number
            [total] => Number
            ...
        )
    [_block2] => Array
        (
             [@attributes] => Array
             (
             )
             [title] => ...
             [data] => Array ()
             ...
        )
    [_block3] => Array
        (
             ..
        )
)
Array
(
    [_blo