如何获取 JSON 格式的多维数组上的特定数据

Question

我有这个JSON格式的多维数组。

{
"CUSTOMER_ORDER": 
[
{
"customer_number": "51",
"table_no": "7",
"menu_name": "Fried Chicken",
"menu_quatity": "5",
"menu_price": "200",
"order_total_price": "1000"
},
{
"customer_number": "51",
"table_no": "7",
"menu_name": "Fries",
"menu_quatity": "5",
"menu_price": "200",
"order_total_price": "1000"
}
]
}

我的问题是，如何获取索引 0 的特定数据CUSTOMER_ORDER？

例如，我想得到menu_nameFried Chicken，谢谢。

更新

解码 JSON 数据后我遇到问题，我得到的是：

json_decode() expects parameter 1 to be string, array given

当我使用它时：

$json_data = $this->post('CUSTOMER_ORDER');
$json_decoded = json_decode($json_data);
$customer_nickname = $json_decoded->CUSTOMER_ORDER[0]->customer_nickname;

当我尝试这个时：

Undefined index: CUSTOMER_ORDER
$json_decoded = json_decode($json_data,true);
or
$json_decoded = json_decode(json_encode($json_data),true);
$customer_nickname = $json_decoded['CUSTOMER_ORDER'][0]['customer_nickname'];

顺便说一下，我正在使用CodeIgniter 3。我希望有人帮助我。谢谢。

Answer 1

我希望它有所帮助。

$json = '{
"CUSTOMER_ORDER": 
[
{
"customer_number": "51",
"table_no": "7",
"menu_name": "Fried Chicken",
"menu_quatity": "5",
"menu_price": "200",
"order_total_price": "1000"
},
{
"customer_number": "51",
"table_no": "7",
"menu_name": "Fries",
"menu_quatity": "5",
"menu_price": "200",
"order_total_price": "1000"
}
]
}';
$jsonDecodedArray = json_decode($json);
print_r($jsonDecodedArray->CUSTOMER_ORDER[0]->customer_number);
// OUTPUT 51