php数组组合的问题

问题描述

问 题

下面的如何有效的使用php实现

数组1:

Array
(
    [0] => Array
        (
            [day] => 2017-03-28
            [reg_count] => 14
        )

    [1] => Array
        (
            [day] => 2017-03-27
            [reg_count] => 53
        )
        
)

数组2:

Array
(
    [0] => Array
        (
            [day] => 2017-03-29
            [pay_count] => 2
        )

    [1] => Array
        (
            [day] => 2017-03-28
            [pay_count] => 12
        )
}

根据day字段,组合成一个新数组

Array
(
    [0] => Array
        (
            [day] => 2017-03-29
            [pay_count] => 2
            [reg_count] => 0
        )

    [1] => Array
        (
            [day] => 2017-03-28
            [pay_count] => 12
            [reg_count] => 14
        )
        
    [2] => Array
        (
            [day] => 2017-03-27
            [pay_count] => 53
            [reg_count] => 0
        )
)

解决方案

$a,$b分别是两个数组
$c =array_merge($a,$b);
$res = array();
foreach($c as $v){
    $res[$v['day']]['day'] =$v['day'];
    if(isset($v['reg_count'])){
        $res[$v['day']]['reg_count'] =$v['reg_count'];
    }
    if(isset($v['pay_count'])){
        $res[$v['day']]['pay_count'] =$v['pay_count'];
    }
}
$res = array_values($res);
var_dump($res);die;

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