如何使用PHP对数组的对象属性求和 [英] How can I sum objects property of an array using PHP

问题描述

我有一个对象数组，我想对一个属性的值求和.这里是一张图片，它将显示数组的结构.

I have an array of objects, and i want to sum value of one of the property.Here is a picture which will show the structre of array.

这是我的代码，不起作用.

print_r($res);//this appear the structure of array,which i will show.   
$sum = 0;   
foreach($res as $key=>$value){ 
   if(isset($value->sent))   
        $sum += $value->sent;
   }   
echo $sum;

推荐答案

$sum = 0;
$result=$res->intervalStats;
foreach($result as $key=>$value){

if(isset($value->spent))   
    $sum += $value->spent;
}
echo $sum;

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