PFinal\Wechat\Api::getAccessToken PHP Метод

    public function getAccessToken($useCache = true)
    {
        //缓存key
        $cacheKey = md5(__FILE__ . __METHOD__ . $this->appId);
        //检查是否启用缓存
        if ($useCache) {
            if (empty($this->accessToken)) {
                $this->accessToken = Cache::get($cacheKey);
            }
            if (!empty($this->accessToken)) {
                return $this->accessToken;
            }
        } else {
            $this->accessToken = null;
            Cache::delete($cacheKey);
        }
        //获取accessToken
        $url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s';
        $response = Curl::get(sprintf($url, $this->appId, $this->appSecret));
        //返回格式 {"access_token":"ACCESS_TOKEN","expires_in":7200}
        //{"access_token":"43BKbLBjBnwH600H5TMSlx6AKT9TCZ3BRXjxvT0erRpzHTIaUuaJBDUoUykTqA","expires_in":7200}
        //每日调用超过次数，将提示
        //{"errcode":45009,"errmsg":"reach max api daily quota limit hint: [PuguNA0618vr22]"}
        $arr = Json::parseOrFail($response);
        $this->accessToken = $arr['access_token'];
        //默认时间是7200秒(120分钟)
        $expires = $arr['expires_in'] - 1200;
        if ($expires > 0) {
            Cache::set($cacheKey, $this->accessToken, $expires);
        }
        return $this->accessToken;
    }