PHP二维数组按某个键值排序的实例讲解

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))

© 版权声明
THE END
喜欢就支持一下吧
点赞12 分享
评论 抢沙发

请登录后发表评论