php 这样一个数组 如何做到 按月份归总并能分页

项目中,需要把用户发布的图片做一个相册,用户发布的图片是多图,没有单独图片表,放在一个字段里,目前把用户的图片都获取出来了,但是想要做到按月份归总并能分页,却找不到解决方法,求大神指教
打印数组结构如下:
$picss =
Array
(
[0] => Array
(
[type] => 0
[pics] => pic/2017/11/23/OWNEUWVDALQUVZMBWZRFLESBVXXYRSOU.jpg
[date] => 2017-11
)

[1] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/ApYq7D6nWqwtsTNgQKv4arATrIj2xoMF.jpg
        [date] => 2017-11
    )

[2] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/pf1EqEW8ocrmaIX7rgJyclStMTWJGdoZ.png
        [date] => 2017-11
    )

[3] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/VnVWiu2OuuvMiPgkcuU215opgseXVXP4.jpg
        [date] => 2017-10
    )

[4] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/izgRpo2JjTdZ2iOmaq67i07ThXsuRCVC.png
        [date] => 2017-10
    )

[5] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/xV6J6aStkoVwdPul1jxebzXdEA8xEELg.png
        [date] => 2017-10
    )

[6] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/Lnp9t5ebX9X4q9TnOgNyyii3weWeB9m7.png
        [date] => 2017-10
    )

[7] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/iUzTp9X39Ihy9ZEwdIVIpdtljCfcx2Eo.png
        [date] => 2017-10
    )

[8] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/iHt9hyU7C5b6wtXcH5JZiNnuBsPVmDLZ.png
        [date] => 2017-10
    )

[9] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/JWiX2W7DrqHKaTLSM8b62EwkZo4tqhwx.png
        [date] => 2017-09
    )

[10] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/EELOkLPrCBgww0NoVug9ObIMiISOHraS.png
        [date] => 2017-09
    )

[11] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/X52H3yrkyWtmO21hRGVOpQlLWka9zO9Y.png
        [date] => 2017-09
    )

[12] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/BdiJ83LoY6eob4vGuCWED9tZv8BAd4dI.jpg
        [date] => 2017-09
    )

[13] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/OdIhFUJqZoryG0XY4HPwsrK6Fz8hG9OY.png
        [date] => 2017-08
    )

[14] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/NUiO9UGFbxfJfayf1gykkQNSADhJJctl.png
        [date] => 2017-08
    )

[15] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/ncxBu2ia4wGzBnNTqOO3qmAw9kIv63vw.png
        [date] => 2017-08
    )

[16] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/ilr5DAAmHNxQREkgEQmmB1vBVb4oTotn.png
        [date] => 2017-08
    )

[17] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/bMX3l42GBS4NqOXXCXCqaXrrmNYBftIV.png
        [date] => 2017-08
    )

[18] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/0XjRTQBR47GSr5XlEpQAUQW5Is6nHcKI.png
        [date] => 2017-07
    )

[19] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/vAxPID53e9wG4400HvHb0mFLcTWCCfb8.png
        [date] => 2017-07
    )

[20] => Array
    (
        [type] => 0
        [pics] => pic/2017/11/20/MWilnyhpmffZY99A4TSTPjCs2vdvKVv0.png
        [date] => 2017-07
    )

)

刚开始打算是按月份来获取内容 但是不能做分页 按月份获取的内容打印结构如下:

Array
(
[0] => Array
(
[date] => 2017-08
[pic] => Array
(
[0] => Array
(
[type] => 0
[pics] => pic/2017/08/28/9A1mnONPlhXZg58uTbwFko98h4vYivvk.jpg
)

                [1] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/08/28/HX7tabHQ9nQsT18j6zJsD3BigEQLUidQ.jpg
                    )

                [2] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/08/28/y2KIuxkobJao0Wo8wgSFIgYriVgT6vZD.jpg
                    )


            )
    )

[1] => Array
    (
        [date] => 2017-09
        [pic] => Array
            (
                [0] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/09/30/ZXMIFQMZXVRTVHNCWFKWCWQKAOEPYOUG.jpg
                    )

                [1] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/09/29/ZCYEEBRPXUWRJVMDREHQFROLMGIKEJTR.jpg
                    )

                [2] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/09/29/FYLOWEHJPYNKRCFRTCCNCYTQWMQKBYPD.jpg
                    )


            )

    )

[2] => Array
    (
        [date] => 2017-10
        [pic] => Array
            (
                [0] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/10/31/GRMLICNZVSHJQFWRPIZVHHZZLRYODZHS.jpg
                    )

                [1] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/10/31/JMLBVVJZUWCLVMLGVLYSHMYQKAMUNTBE.jpg
                    )

                [2] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/10/31/QGOEXSJZYSVDNQBCMLHGOBAKZVNJWKYT.jpg
                    )

                [3] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/10/31/NILPNUHORWKPDNCHMATMGFTAIHIOSUEN.jpg
                    )

                [4] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/10/31/JCLTAJVGLMMWZMPOMFZDCFCLUATILHTB.jpg
                    )

                [5] => Array
                    (
                        [type] => 0
                        [pics] => pic/2017/10/31/PXBNRPJAULYSLZZYUZHCVDZGTDTMUBJD.jpg
                    )

            )

    )

[3] => Array
    (
        [date] => 2017-11
        [pic] => Array
            (
                [0] => Array
                    (
                        [type] => 0
                        [pics] =>OWNEUWVDALQUVZMBWZRFLESBVXXYRSOU.jpg
                    )

                [1] => Array
                    (
                        [type] => 0
                        [pics] => ApYq7D6nWqwtsTNgQKv4arATrIj2xoMF.jpg
                    )

                [2] => Array
                    (
                        [type] => 0
                        [pics] => pf1EqEW8ocrmaIX7rgJyclStMTWJGdoZ.png
                    )

                [3] => Array
                    (
                        [type] => 0
                        [pics] => VnVWiu2OuuvMiPgkcuU215opgseXVXP4.jpg
                    )
            )

    )

)

尝试使用 array_slice 函数,但是达不到效果

foreach($picss as $v){
$list[$v['date']][]=$v;
}

没明白你什么意思,不知道这样能不能帮到你!