排序前
Array
(
[0] => Array
(
[name] => 龙
[age] => 2017-02-28
)
[1] => Array
(
[name] => 龙2
[age] => 2017-03-14
)
[2] => Array
(
[name] => 小3
[age] => 2017-05-09
)
[3] => Array
(
[name] => 龙4
[age] => 2017-02-03
)
[4] => Array
(
[name] => 龙5
[age] => 2017-03-23
)
[5] => Array
(
[name] => 龙6
[age] => 21
)
)
array_multisort(array_column($arr,'age'),SORT_DESC,$arr);
print_r($arr);
排序后
Array
(
[0] => Array
(
[name] => 龙6
[age] => 21
)
[1] => Array
(
[name] => 小3
[age] => 2017-05-09
)
[2] => Array
(
[name] => 龙5
[age] => 2017-03-23
)
[3] => Array
(
[name] => 龙2
[age] => 2017-03-14
)
[4] => Array
(
[name] => 龙
[age] => 2017-02-28
)
[5] => Array
(
[name] => 龙4
[age] => 2017-02-03
)
)
其中 array_column(数组,数组中的某个键值) 从多维数组中取出某个键值的一列 返回一个一维数组；
array_multisort(数组(一维数组),排序方式(SOTR_ASC,SOTR_DESC),其他数组(可以是二维的))
总结
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