从PHP日志文件中提取Json数据

我是php的新手， 这是我的json文件

{"hint_data":{"locations":["AXQDAP____8AAAAABwAAABEAAAAYAAAAIwIAAERwAgAAAAAADgyCAef7TAMCAAEB","bOsDAP____8AAAAAAwAAAAcAAADFAQAAFAAAAEJwAgAAAAAANQeCAdzdTAMFAAEB"],"checksum":326195011},"route_name":["",""],"via_indices":[0,15],"via_points":[[25.299982,55.376873],[25.29874,55.369179]],"found_alternative":false,"route_summary":{"end_point":"","start_point":"","total_time":101,"total_distance":871},"route_geometry":"{_ego@m}|rhBpBaBvHuC`EuArEUtEtAlDvEnD`MlDvMli@hsEfFzn@QlTgNhwCs@fKwBjF","status_message":"Found route between points","status":0}

---

我只需要从json中提取总时间，并将其打印到csv文件，有人能帮我吗

使用

json\u decode

您可以从json中获取总时间

使用

json\u decode

可以获得关联数组，使用索引可以访问总时间值，如下所示

---

首先，将JSON数据解码回PHP对象。然后可以访问对象的Total Time属性，如下所示：

    <?php
        $json       = '{"hint_data":{"locations":["AXQDAP____8AAAAABwAAABEAAAAYAAAAIwIAAERwAgAAAAAADgyCAef7TAMCAAEB","bOsDAP____8AAAAAAwAAAAcAAADFAQAAFAAAAEJwAgAAAAAANQeCAdzdTAMFAAEB"],"checksum":326195011},"route_name":["",""],"via_indices":[0,15],"via_points":[[25.299982,55.376873],[25.29874,55.369179]],"found_alternative":false,"route_summary":{"end_point":"","start_point":"","total_time":101,"total_distance":871},"route_geometry":"{_ego@m}|rhBpBaBvHuC`EuArEUtEtAlDvEnD`MlDvMli@hsEfFzn@QlTgNhwCs@fKwBjF","status_message":"Found route between points","status":0}';
        $data       = json_decode($json);
        $totalTime  = $data->route_summary->total_time;
        var_dump($totalTime);    // DUMPS     101

---

使用
json\u decode
和foreach loop您能写一个完整的代码吗？非常感谢，谢谢，弗雷恩，我会记下来的。如果有大约900个json数据，我应该将其存储在一个文件中并解析该文件吗？检查这里：您需要跟踪从
json\u decode
获得的数组。如果你能看到这一点，那么就不会像你想的那样产生混乱。使用json sting并查看数组。谢谢，还有Frayne，如果我需要在从json提取的总时间数据之后在我的文件标题“total_time”中添加一列，我该怎么办？
    <?php
        $json       = '{"hint_data":{"locations":["AXQDAP____8AAAAABwAAABEAAAAYAAAAIwIAAERwAgAAAAAADgyCAef7TAMCAAEB","bOsDAP____8AAAAAAwAAAAcAAADFAQAAFAAAAEJwAgAAAAAANQeCAdzdTAMFAAEB"],"checksum":326195011},"route_name":["",""],"via_indices":[0,15],"via_points":[[25.299982,55.376873],[25.29874,55.369179]],"found_alternative":false,"route_summary":{"end_point":"","start_point":"","total_time":101,"total_distance":871},"route_geometry":"{_ego@m}|rhBpBaBvHuC`EuArEUtEtAlDvEnD`MlDvMli@hsEfFzn@QlTgNhwCs@fKwBjF","status_message":"Found route between points","status":0}';
        $data       = json_decode($json);
        $totalTime  = $data->route_summary->total_time;
        var_dump($totalTime);    // DUMPS     101