如何使用 php 从 JSON 中获取特定值

Question

我已经运行了下面的代码$api_key = 'XXXXXXXXX';$api_url = "http://sms.eduapp.com:8381/app/miscapi/".$api_key."/getBalance/true/";$credit_balance = file_get_contents( $api_url);echo $credit_balance;并得到输出   [{"ROUTE_ID":"101057","ROUTE":"SMSWAY_TRANS","BALANCE":"13700"}]从上面的输出中，我只想在 php 变量中获取值 13700。提前致谢 ：）

Answer 1

$credit_balance = file_get_contents($api_url);

$balance = json_decode($credit_balance, true);

echo $balance[0]['BALANCE'];

或者：

$credit_balance = file_get_contents($api_url);

$balance = json_decode($credit_balance);

echo $balance[0]->BALANCE

Answer 2

该网站返回给你一个数组试试这个

$api_key = 'XXXXXXXXX';

$api_url = "http://sms.eduapp.com:8381/app/miscapi/".$api_key."/getBalance/true/";

$credit = file_get_contents( $api_url);

// sorry im forgot to decode th json

$credit_balance = json_decode($credit, true);

echo $credit_balance['BALANCE'];