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PHP 根據(jù)key 給二維數(shù)組分組

標簽： 發(fā)布日期：2016-12-09 00:00:00 302

我們經(jīng)常拿到一個二維數(shù)組出來，會發(fā)現(xiàn)結(jié)果和自己想要的有些偏差，可能需要根據(jù)二維數(shù)組里的某個字段對數(shù)組分組。

先來看以下數(shù)組，

Array
(
[0] => Array
(
[id] => 1
[wo_id] => 2
[evaluate_id] => 1
[type] => 分組1
[ctime] => 2016-12-02 11:39:34
)
[1] => Array
(
[id] => 2
[wo_id] => 31
[evaluate_id] => 2
[type] => 分組1
[ctime] => 2016-12-12 11:39:50
)
[2] => Array
(
[id] => 3
[wo_id] => 31
[evaluate_id] => 4
[type] => 分組2
[ctime] => 2016-12-02 11:40:01
)
[3] => Array
(
[id] => 4
[wo_id] => 2
[evaluate_id] => 5
[type] => 分組2
[ctime] => 2016-12-07 10:21:40
)
[4] => Array
(
[id] => 5
[wo_id] => 2
[evaluate_id] => 3
[type] => 分組2
[ctime] => 2016-12-07 10:21:51
)
[5] => Array
(
[id] => 6
[wo_id] => 2
[evaluate_id] => 2
[type] => 分組3
[ctime] => 2016-12-07 10:21:56
)
[6] => Array
(
[id] => 7
[wo_id] => 4
[evaluate_id] => 2
[type] => 分組3
[ctime] => 2016-12-07 10:22:10
)
)