Question

我在gridview中有这个：

[
    'value' => function ($data) {
        $summ = 0;
        $str = 0;
        foreach($data->itemsOrder as $request) {
            $str .= $request->order_items_quantity;
            $summ += $str;
        }

        return $summ;
    },
],

我得到类似的东西＆＃39; 123＆＃39;在列单元格中，但不是＆＃39; 6＆＃39;。我如何获得元素总和？

Answer 1

试试这个..

 gridview [
            'value' => function ($data) {
                $summ = 0;
                $str = 0;
                foreach($data->itemsOrder as $request) {
                    $summ +=$request->order_items_quantity;
                }

                return $summ;
            },

        ],

Answer 2

  gridview [
            'value' => function ($data) {
                $summ = 0;
                $str = 0;
                foreach($data->itemsOrder as $request) {
                    //$str .= $request->order_items_quantity; //this means you are concating string each time which you dont need to do
                    $str = $request->order_items_quantity;
                    $summ += $str;
                }

                return $summ;
            },

        ],

希望你在php

中得到.的含义

Answer 3

因为你是连接字符串而不是添加数字。

所以请替换$str .= $request->order_items_quantity;

与

$str += floatval($request->order_items_quantity);

或者order_items_quantity是一个整数

$str += intval($request->order_items_quantity);

foreach yii2中元素的总和

3 个答案: