php多维数组按类型和日期出现的次数

I have the following array:

我有以下数组：

Array
(
[0] => Array
    (
        [0] => 2015-07-18
        [1] => 22 SSH
    )

[1] => Array
    (
        [0] => 2015-07-18
        [1] => 80 HTTP
    )

[2] => Array
    (
        [0] => 2015-07-18
        [1] => 3389 Remote Desktop
    )

[3] => Array
    (
        [0] => 2015-07-19
        [1] => 3389 Remote Desktop
    )

[4] => Array
    (
        [0] => 2015-07-19
        [1] => 3389 Remote Desktop
    )
)
Array
(