TP5开发微信公众号时，access_token存储和刷新问题

TP5开发微信公众号时，access_token存储和刷新问题

主要利用tp5的缓存机制

public function getWxAccessToken($appId,$appSecret){
    $access_token = Cache::get('wx_access_token:'.$appId);
    if($access_token){
        return createResult(200,'success',$access_token);
    }else{
        //1.请求url地址
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appId."&secret=".$appSecret;
        $res = $this->http_curl($url);
        if(isset($res['errcode']) && $res['errcode']!=0){
            return createResult($res['errcode'],$res['errmsg']);
        }
        $access_token = $res['access_token'];
Cache::tag('AToken')->set('wx_access_token:'.$appId,$access_token,3600);
        return createResult(200,'success',$access_token);
    }
}