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memcache缓存存储用户信息7000秒
<?phpfunction getAccessToken($appid,$appsecret) {$mem = new CacheMemcache();$acc = $mem->get("access_token_".$appid);if (!$acc) {$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$appsecret";$result = https_request($url);$jsoninfo = json_decode($result, true);$access_token = $jsoninfo["access_token"];if ($access_token) {$expire = time() + 7000;$mem = new CacheMemcache();$mem->set("access_token_".$appid,$access_token,$expire);}}else {$access_token = $acc;}return $access_token;}?>
文件存储access_token
 function getAccessToken() {// access_token 应该全局存储与更新,以下代码以写入到文件中做示例$data = json_decode(file_get_contents("access_token.json"));if ($data->expire_time < time()) { $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret"; $res = json_decode($this->httpGet($url)); $access_token = $res->access_token; if ($access_token) {$data->expire_time = time() + 7000;$data->access_token = $access_token;$fp = fopen("access_token.json", "w");fwrite($fp, json_encode($data));fclose($fp); }} else { $access_token = $data->access_token;}return $access_token; }
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