PHP 怎么能把数组 根据分类 组成多个数组

Question

[{"id":"11","cate_id":"1","year":"2020","moon":"01","day":"11","hits":"1","first_time":"2020-01-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"12","cate_id":"1","year":"2020","moon":"01","day":"11","hits":"1","first_time":"2020-01-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"21","cate_id":"1","year":"2020","moon":"02","day":"11","hits":"1","first_time":"2020-02-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"22","cate_id":"1","year":"2020","moon":"02","day":"11","hits":"1","first_time":"2020-02-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"31","cate_id":"1","year":"2020","moon":"03","day":"11","hits":"1","first_time":"2020-03-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"32","cate_id":"1","year":"2020","moon":"03","day":"11","hits":"1","first_time":"2020-03-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"37","cate_id":"1","year":"2020","moon":"04","day":"11","hits":"2","first_time":"2020-04-11 08:02:34","name":"u5546u54c1u4e00"},{"id":"41","cate_id":"1","year":"2020","moon":"04","day":"11","hits":"2","first_time":"2020-04-11 08:10:56","name":"u5546u54c1u4e00"},{"id":"42","cate_id":"1","year":"2020","moon":"05","day":"11","hits":"1","first_time":"2020-05-11 08:11:46","name":"u5546u54c1u4e00"},{"id":"43","cate_id":"1","year":"2020","moon":"05","day":"11","hits":"2","first_time":"2020-05-11 08:15:49","name":"u5546u54c1u4e00"},{"id":"44","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"45","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"50","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"51","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"52","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"53","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"54","cate_id":"1","year":"2020","moon":"06","day":"11","hits":"1","first_time":"2020-06-11 07:51:14","name":"u5546u54c1u4e00"},{"id":"55","cate_id":"1","year":"2020","moon":"07","day":"01","hits":"1","first_time":"2020-07-01 07:51:14","name":"u5546u54c1u4e00"},{"id":"56","cate_id":"1","year":"2020","moon":"07","day":"01","hits":"1","first_time":"2020-07-01 07:51:14","name":"u5546u54c1u4e00"},{"id":"57","cate_id":"1","year":"2020","moon":"07","day":"01","hits":"1","first_time":"2020-07-01 07:51:14","name":"u5546u54c1u4e00"},{"id":"58","cate_id":"1","year":"2020","moon":"07","day":"01","hits":"1","first_time":"2020-07-01 07:51:14","name":"u5546u54c1u4e00"},{"id":"67","cate_id":"3","year":"2020","moon":"07","day":"01","hits":"1","first_time":"2020-07-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"70","cate_id":"3","year":"2020","moon":"08","day":"01","hits":"1","first_time":"2020-08-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"71","cate_id":"3","year":"2020","moon":"08","day":"01","hits":"1","first_time":"2020-08-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"72","cate_id":"3","year":"2020","moon":"08","day":"01","hits":"1","first_time":"2020-08-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"79","cate_id":"3","year":"2020","moon":"08","day":"01","hits":"1","first_time":"2020-08-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"82","cate_id":"3","year":"2020","moon":"09","day":"01","hits":"1","first_time":"2020-09-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"86","cate_id":"3","year":"2020","moon":"09","day":"01","hits":"1","first_time":"2020-09-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"87","cate_id":"3","year":"2020","moon":"09","day":"01","hits":"1","first_time":"2020-09-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"88","cate_id":"3","year":"2020","moon":"09","day":"01","hits":"1","first_time":"2020-09-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"89","cate_id":"3","year":"2020","moon":"10","day":"01","hits":"1","first_time":"2020-10-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"90","cate_id":"3","year":"2020","moon":"10","day":"01","hits":"1","first_time":"2020-10-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"91","cate_id":"3","year":"2020","moon":"10","day":"01","hits":"1","first_time":"2020-10-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"100","cate_id":"3","year":"2020","moon":"11","day":"01","hits":"1","first_time":"2020-11-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"105","cate_id":"3","year":"2020","moon":"11","day":"01","hits":"1","first_time":"2020-11-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"106","cate_id":"3","year":"2020","moon":"11","day":"01","hits":"1","first_time":"2020-11-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"107","cate_id":"3","year":"2020","moon":"12","day":"01","hits":"1","first_time":"2020-12-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"108","cate_id":"3","year":"2020","moon":"12","day":"01","hits":"1","first_time":"2020-12-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"109","cate_id":"3","year":"2020","moon":"12","day":"01","hits":"1","first_time":"2020-12-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"112","cate_id":"3","year":"2020","moon":"12","day":"01","hits":"1","first_time":"2020-12-01 07:51:14","name":"u5546u54c1u4e09"},{"id":"113","cate_id":"3","year":"2020","moon":"12","day":"01","hits":"1","first_time":"2020-12-01 07:51:14","name":"u5546u54c1u4e09"}]

我想做一个报表统计的，查询出来的数据如上。 希望得到这种结果。

按年份（year）输出 分类（cate_id）?12个月（moon）的 点击数量 hits 的值

2020 [{
            cate_id: '1',
            data: [10, 20, 30, 40, 50, 60, 70, 80, 70, 60, 50, 40]
        }, {
            cate_id: '2',
            data: [30, 40, 45, 50, 55, 40, 30, 28, 17, 55, 35, 22]
        }, {
            cate_id: '3',
            data: [29, 46, 56, 66, 46, 38, 28, 47, 53, 33, 17, 40]
        }, {
            cate_id: '4',
            data: [39, 42, 40, 55, 65, 45, 65, 70, 90, 103, 66, 48]
 }]
 2021 [{
            cate_id: '1',
            data: [10, 20, 30, 40, 50, 60, 70, 80, 70, 60, 50, 40]
        }, {
            cate_id: '2',
            data: [30, 40, 45, 50, 55, 40, 30, 28, 17, 55, 35, 22]
        }, {
            cate_id: '3',
            data: [29, 46, 56, 66, 46, 38, 28, 47, 53, 33, 17, 40]
        }, {
            cate_id: '4',
            data: [39, 42, 40, 55, 65, 45, 65, 70, 90, 103, 66, 48]
 }]

Answer 1

    function groupBy($array, $key)
    {
        $grouped = [];
        foreach ($array as $item) {
            $grouped[$item[$key]][] = $item;
        }

        return $grouped;
    }