php 微信授权

//微信授权

/*
 * 微信授权
 *  @param  code  前端获取的授权code 有效期只有一次    
 * */
public function wxlogin()
{
    $code  = $this->request->param('code');
    $param = $this->request->param();
    if ($code){
        $config = config('wechat.');
        $appid=$config['app_id'];
        $app_secret = $config['app_secret'];
        $token  = json_decode($this->getCurl("https://api.weixin.qq.com/sns/jscode2session?appid={$appid}&secret={$app_secret}&js_code={$code}&grant_type=authorization_code"), true);//调用微信api接口
        
        $openid = $token['openid'];//openid 微信用户的唯一标识对每个公众平台都不一样
        
       //下面为操作业务
        if ($openid) {

            $data =['avatar'=>$param['avatar'],'nickname'=>$param['nickname'],'open_id'=>$openid,'create_time'=>time()];

            $id = Db::name('user')->insertGetId($data);

            return success($id);

        }else{
            return error('openid获取失败');
        }
    }else{
        return error('code为空');
    }
}


//发请求方法
public function getCurl($url)
{
    $ch=curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
    curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
    $result = curl_exec($ch);
    return $result;
}