php 顯示第二層 jsonObject 問題？

Question

我可以用 $data->{'msg'} 印第一層的值，例如 msg但假設我要印第二層我要怎麼寫？比如說我要印 card_info 的 bin_code { "status": 0, "msg": "Success", "amount": 100, "acquirer": "xxx", "currency": "xxx", "rec_trade_id": "xxx", "bank_transaction_id": "xxx", "order_number": "", "auth_code": "xxx", "card_info": { "issuer": "JxxA", "funding": 0, "type": 1, "level": "", "country": "xx x", "last_four": "x", "bin_code": "x", "country_code": "x" }, "transaction_time_millis": 1531387581490, "bank_transaction_time": { "start_time_millis": "1531387581528", "end_time_millis": "1531387581528" }, "bank_result_code": "0", "bank_result_msg": "" } 他不是 array，所以我的方式完全不行＝＝

Answer 1

你这个是json结构，解析成数组结构，再去获取。

$array = json_decode($json, true);
$bin_code = $array['card_info']['bin_code'];