1.access_token.json文件 用于存储access_token

{"access_token": "15_DUMf8LJODBpD7q8yTQpDFZ1kHEzs6o-pbSzPtMVIgahBJTuIWv4tsgB8Boq5uYAbM_YAb-0eg-A2DNUPOeih-XQHzH9uMfFZ7DU2MLuV9fT4oQxOPgCd47zlDGJhAFAGJM" "expires_time": 1543041788}

用于读取access_token和刷新access_token

 ($expires_time + 3600)){
        $url ="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wx43333b9fe558&secret=30518e99f338cb1f8ecac3469204dac5";
        $res =file_get_contents($url);
        $result = json_decode($res true);
        $access_token =$result["access_token"];
        $expires_time = time();
        file_put_contents('access_token.json''{"access_token": "'.$access_token.'" "expires_time": '.$expires_time.'}');
       
       echo '{"access_token":"'.$access_token.'""author":"wangsanqu"}';
    }else{
     
      echo '{"access_token":"'.$access_token.'""author":"wangsanqu"}';
     
    }
}
else{
     echo "403禁止调用api";exit();
}
?>

3.在需要调用的地方进行调用

$url ="https://********/token.php";
$res =file_get_contents($url);
$result = json_decode($res true);
$access_token =$result["access_token"];
$expires_time = time();