我想使用php从cassandraapachenosql下载数据，作为我正在进行的项目的一部分。但我对php还不熟悉。我想登录并从nosqldb中提取json数据。我相信下面的代码实际上是登录的，因为它生成了一个输出“[]”。没有别的，没有成功的信息。我要传递以下参数
networkhierarchyid=3，metertypeid=2
我期望得到以下结果。任何人都可以教我怎么做。
[

{
    "MeterLookup_TblRefID": 237,
    "NetworkLookup_TblRefID": 3,
    "Network_Name": "SS-43 SEWA SCADA (Command Center)",
    "Longitude": 57.403547,
    "Latitude": 27.366666,
    "OnOFfStatus": true
},

{
    "MeterLookup_TblRefID": 277,
    "NetworkLookup_TblRefID": 4,
    "Network_Name": "SS-8 MaySaloon",
    "Longitude": 57.406274,
    "Latitude": 27.360654,
    "OnOFfStatus": true
},
{
    "MeterLookup_TblRefID": 798,
    "NetworkLookup_TblRefID": 5,
    "Network_Name": "SS-1 Al Nasserya Driving School",
    "Longitude": 57.404669,
    "Latitude": 27.367591,
    "OnOFfStatus": true
}

]
这是我的密码：

<?php

        $url = 'http://127.0.0.2:9003/TimApp/api/NxtMbl/getdtrloadconsumptiondetails';

        //Your username.
        $username = 'ApiUser';

        //Your password.
        $password = 'ApiPass';

        //Initiate cURL.
        $ch = curl_init($url);

        //Specify the username and password using the CURLOPT_USERPWD option.
        curl_setopt($ch, CURLOPT_USERPWD, $username . ":" . $password);  

        //Tell cURL to return the output as a string instead
        //of dumping it to the browser.
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        //Execute the cURL request.
        $response = curl_exec($ch);

        //Check for errors.
        if(curl_errno($ch)){
            //If an error occured, throw an Exception.
            throw new Exception(curl_error($ch));
        }

        //Print out the response.
        echo $response;

    ?>