php二維數組中子數組的某一鍵相等，其他鍵值求和

須要處理的數組

Array
(
    [0] => Array
        (
            [uid] => 1
            [price] => 85.00
            [earnings] => 40.00
        )

    [1] => Array
        (
            [uid] => 8
            [price] => 56.00
            [earnings] => 31.00
        )

    [2] => Array
        (
            [uid] => 15
            [price] => 56.00
            [earnings] => 31.00
        )

    [3] => Array
        (
            [uid] => 15
            [price] => 56.00
            [earnings] => 31.00
        )

    [4] => Array
        (
            [uid] => 21
            [price] => 180.00
            [earnings] => 85.00
        )

    [5] => Array
        (
            [uid] => 21
            [price] => 60.00
            [earnings] => 35.00
        )

    [6] => Array
        (
            [uid] => 231
            [price] => 60.00
            [earnings] => 35.00
        )

)

 

公共方法

/***************
 * @function                         二維數組中子數組的某一鍵相等，其他鍵值求和
 * @Param:
 *          $array :                 傳入參數
 *          $mainKey :               指定鍵
 *          $otherKey :              須要求和的鍵，一維數組
 *          $num :                   須要求和的鍵的數量
 * @Return:     $tempArr             返回結果數組
 ***************/
function array2_key_sum($array,$mainKey,$otherKey,$num){
    $item=array();
    foreach($array as $k=>$v){
        if(!isset($item[$v[$mainKey]])){
            $item[$v[$mainKey]]=$v;
        }else{
            for ($i = 0;$i < $num;$i++){
                $item[$v[$mainKey]][$otherKey[$i]]+=$v[$otherKey[$i]];
            }
        }
    }
    return $item;
}

調用公共方法

$orderTotal = array2_key_sum($orderTotal,'uid',array('price','earnings'),2);

處理後的數組

Array
(
    [1] => Array
        (
            [uid] => 1
            [price] => 85.00
            [earnings] => 40.00
        )

    [8] => Array
        (
            [uid] => 8
            [price] => 56.00
            [earnings] => 31.00
        )

    [15] => Array
        (
            [uid] => 15
            [price] => 168
            [earnings] => 62
        )

    [21] => Array
        (
            [uid] => 21
            [price] => 300
            [earnings] => 120
        )

    [231] => Array
        (
            [uid] => 231
            [price] => 60.00
            [earnings] => 35.00
        )

)

備註：

一、 若是須要處理的數組有空值，則用

$orderWeek = array_filter($orderWeek);

二、 若是想要給所得數組的鍵從0開始

$orderWeek = array_values($orderWeek);