private function getAccessToken()
{
// access_token 应该全局存储与更新，以下代码以写入到文件中做示例
$redis = PtRedis::obj();
$data = $redis->get($this->access_path);
if ($data) {
$data = json_decode($data);
}
if (!$data || isset($data->expire_time) && $data->expire_time < time()) {
// 如果是企业号用以下URL获取access_token
// $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appId}&secret={$this->appSecret}";
$res = json_decode($this->httpGet($url));
$access_token = $res->access_token;
if ($access_token) {
$res->expire_time = time() + 7000;
$res->access_token = $access_token;
$redis->set($this->access_path, json_encode($res));
}
} else {
$access_token = $data->access_token;
}
return $access_token;
}
static function _redis($key = "default")
{
return PtRedis::obj($key);
}
