wgs84 turn Baidu latitude and longitude coordinates

/**
 * wgs84 转百度地图坐标
 * @param $lng
 * @param $lat
 * @return array
 */
function toBaiduLocation($lng,$lat){
    $ak = 'nljzQ7WZULfz4GXA6biVFlbkGwvQvueN';
    $url = 'https://api.map.baidu.com/geoconv/v1/?coords='.$lng.','.$lat.'&from=1&to=5&ak='.$ak;
    $result =  httpGet($url);
    $json = json_decode($result,true);
    if($json['status'] == 0 && isset($json['result'][0])){
        $res = $json['result'][0];
        return ['lng'=>$res['x'],'lat'=>$res['y']];
    }
    return ['lng'=>$lng,'lat'=>$lat];
}

function httpGet($url)
{
    $curl = curl_init();
    curl_setopt ($ curl, CURLOPT_RETURNTRANSFER, to true);
    curl_setopt ($ curl, CURLOPT_TIMEOUT, 500); 
    // To ensure the security of data transmission between the server and the third party server WeChat, all micro-channel interface using https call mode, the following two lines of code must be used to open ssl security verification. 
    // code here if validation fails during deployment, please go http://curl.haxx.se/ca/cacert.pem download a new certificate identification documents. 
    curl_setopt ($ curl, CURLOPT_SSL_VERIFYPEER, to true); 
    curl_setopt ($ curl, CURLOPT_SSL_VERIFYHOST, to false); 
    curl_setopt ($ curl, CURLOPT_URL to, $ URL); 

    $ RES = the curl_exec ($ curl); 
    curl_close ($ curl); 
    return $ RES; 
} 

$ toBaiduLocation RES = (102.7449617,24.983720); 
print_r ($ RES);

　　1, using the interface conversion Baidu

　　Baidu document   http://lbsyun.baidu.com/index.php?title=webapi/guide/changeposition

　　ak own open application platform in Baidu

　　http://lbsyun.baidu.com/apiconsole/key