PHP中用curl请求接口

<?php
    $url="http://api.xxxx.com/api/articles/1138121/comments?strategy=hot";
     $headers=array(
         'common-info:{"device_platform": "web","language":"tr","auth_type":1,"user_id":'.3589775676782.', "version_code": 55}'
     );
    $curl=curl_init();//初始话一个curl句柄
    curl_setopt($curl,CURLOPT_URL,$url);//设置请求接口地址
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_NOBODY, FALSE);//设置只返回数据body
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);//设置header的参数
    $result=curl_exec($curl);
    curl_close($curl);
    echo $result;
?>