Question

解决方案

要从json中的循环中获取总价，我们需要在下面的代码中使用$tot += +$data['price'].",";

$arr = '[{
    "id": 1,
    "name": "A green door",
    "price": 11,
    "tags": ["home", "green"]
},
{
    "id": 2,
    "name": "A green door",
    "price": 15,
    "tags": ["home", "green"]
},
{
    "id": 3,
    "name": "A green door",
    "price": 10,
    "tags": ["home", "green"]
}]';

//print_r($arr);

$arr = json_decode($arr,TRUE);

foreach ($arr as $data)
{
  $tot += +$data['price'].",";
}

echo "Total = ".rtrim($tot,',');

Answer 1

使用此，

$arr = json_decode($arr,TRUE);
echo "Total = ".array_sum(array_column($arr,"price"));

array_sum - 计算数组中值的总和

array_column - 返回输入数组中单个列的值

试一试，这样可行。

Answer 2

$ arr = json_decode（$ arr，TRUE）;

foreach ($arr as $data)
{
  $tot[] =$data['price'];
}

echo "Total=".array_sum($tot);

如何从json获得总价

2 个答案: