PHP实现数组根据某个字段进行水平合并，横向合并案例分析

本文实例讲述了PHP实现数组根据某个字段进行水平合并，横向合并。分享给大家供大家参考，具体如下：

PHP数组水平合并，横向合并，两条数据合并成一行

需求

将两个素组中日期相同的合并成一行

数组a

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Array (    [0] => Array      (        [ date ] => 2019-04-02        [today_pay_money] => 168.00        [today_pay_num] => 1        [yesterday_pay_money] => 999.00        [yesterday_pay_num] => 1      )    [1] => Array      (        [ date ] => 2019-04-09        [today_pay_money] => 0.01        [today_pay_num] => 1        [yesterday_pay_money] => 0.00        [yesterday_pay_num] => 0      )    [2] => Array      (        [ date ] => 2019-05-05        [today_pay_money] => 0.01        [today_pay_num] => 1        [yesterday_pay_money] => 2.00        [yesterday_pay_num] => 1      )    [3] => Array      (        [ date ] => 2019-05-11        [today_pay_money] => 0.00        [today_pay_num] => 0        [yesterday_pay_money] =>        [yesterday_pay_num] => 1      ) )

数组B

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Array (    [0] => Array      (        [ date ] => 2019-05-07        [today_pay_money1] => 0        [today_pay_num1] => 0        [yesterday_pay_money1] => 0        [yesterday_pay_num1] => 0      )    [1] => Array      (        [ date ] => 2019-05-11        [today_pay_money1] => 0        [today_pay_num1] => 0        [yesterday_pay_money1] => 1        [yesterday_pay_num1] => 1      ) )

需要格式

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Array (    [2019-04-02] => Array      (        [ date ] => 2019-04-02        [today_pay_money] => 168.00        [today_pay_num] => 1        [yesterday_pay_money] => 999.00        [yesterday_pay_num] => 1      )    [2019-04-09] => Array      (        [ date ] => 2019-04-09        [today_pay_money] => 0.01        [today_pay_num] => 1        [yesterday_pay_money] => 0.00        [yesterday_pay_num] => 0      )    [2019-05-05] => Array      (        [ date ] => 2019-05-05        [today_pay_money] => 0.01        [today_pay_num] => 1        [yesterday_pay_money] => 2.00        [yesterday_pay_num] => 1      )    [2019-05-11] => Array      (        [ date ] => 2019-05-11        [today_pay_money] => 0.00        [today_pay_num] => 0        [yesterday_pay_money] =>        [yesterday_pay_num] => 1        [today_pay_money1] => 0        [today_pay_num1] => 0        [yesterday_pay_money1] => 1        [yesterday_pay_num1] => 1      )    [2019-05-07] => Array      (        [ date ] => 2019-05-07        [today_pay_money1] => 0        [today_pay_num1] => 0        [yesterday_pay_money1] => 0        [yesterday_pay_num1] => 0      ) )

代码实现

先将a,b数组合并，判断当前日期下是否空，空的话直接赋值，不空的话，将已有素组和当前数组合并

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$total = array_merge ( $a , $b )); $res = array (); foreach ( $total as $k => $v ) {    if ( empty ( $res [ $v [ 'date' ]]))    $res [ $v [ 'date' ]] = $v ;    else    $res [ $v [ 'date' ]]= array_merge ( $res [ $v [ 'date' ]], $v ); }

希望本文所述对大家PHP程序设计有所帮助。

原文链接：https://blog.csdn.net/flysnownet/article/details/90111860