微信保存access_token
function get_accessToken(){ $appid = '......'; $secret = '......'; $tokenFile = "./access_token.txt"; // 缓存文件名 $data = json_decode(file_get_contents($tokenFile)); //转换为json格式 if ($data->expire_time < time() or ! $data->expire_time) { //token过期的情况 $res = file_get_contents('https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=' . $appid . '&secret=' . $secret); $res = json_decode($res, true); // 对 JSON 格式的字符串进行编码 $access_token = $res['access_token']; if ($access_token) { $data->expire_time = time() + 7200; //保存2小时 $data->access_token = $access_token; $fp = fopen($tokenFile,