Question

我在PHP中具有以下多维数组。

对于每个array（），本示例都有3条信息。 IRL，我有20多名。

Array
(
      [0] => Array
      (
            [date] => 2019-04-23
            [room] => 101
            [rate] => 10
      )
      [1] => Array
      (
            [date] => 2019-04-25
            [room] => 101
            [rate] => 10
      )
      [2] => Array
      (
            [date] => 2019-04-26
            [room] => 101
            [rate] => 10
      )
      [3] => Array
      (
            [date] => 2019-04-25
            [room] => 102
            [rate] => 12
      )
      [4] => Array
      (
            [date] => 2019-04-26
            [room] => 102
            [rate] => 12
      )
)

仅当room和rate相似时，才可以对来自该数组的数据进行分组吗？

例如，上一个数组的期望输出如下：

Array
(
      [0] => Array
      (
            [room] => 101,
            [rate] => 10,
            [dates] => Array
            (
                [0] => 2019-04-23,
                [1] => 2019-04-25,
                [2] => 2019-04-26
            )              
      )
      [2] => Array
      (
            [room] => 102,
            [rate] => 12,
            [dates] => Array
            (
                [0] => 2019-04-25,
                [1] => 2019-04-26
            )
      )
)

Answer 1

您可以使用Array.reduce

Sandbox example

代码

<?php

$res  = array_reduce($you_array,function($acc,$val){
        $room = array_search($val['room'],array_column($acc,'room'));
        $rate = array_search($val['rate'],array_column($acc,'rate'));
    if($rate == $room && $room > -1){
        array_push($acc[$room]['date'],$val['date']);
    }else{
        $new_arr=$val;
        $new_arr['date']=[$val['date']];
        array_push($acc,$new_arr);
    }
    return $acc;
},[]);


print_r($res);
?>

如果PHP中的键值相等，则将数组中的项目分组

1 个答案: