curl调用第三方接口

 //调用接口curl post方式请求
    function curl_post($url, $postdata = null)
    {
        $curl = curl_init();
        $this_header = array("content-type: application/json;charset=UTF-8");
        curl_setopt($curl, CURLOPT_HTTPHEADER, $this_header);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_POST, true);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $postdata);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($curl);
        return $result;
    }
    
    public function demo(){
        $codejson['avgstr'] = '参数';
        $healthUrl = '地址';
        $codejson = json_encode($codejson);
        $codes = $this->curl_post($healthUrl,$codejson);
        return $codes;
    }