php - 如何知道访问 token 是否在 Google Api PHP 中过期

Question

我如何知道我的访问 token 是否已过期。

我正在使用 try and catch

try {
$result = file_get_contents('https://www.googleapis.com/calendar/v3/calendars/primary/events?access_token='.$accesstoken);
print_r($result);
}
catch(Exception $e){
echo "Get new token";
}

但它仍然从 file_get_contents 中得到错误，然后打印“获取新 token ”

如果我想使用curl

$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,'https://www.googleapis.com/calendar/v3/calendars/primary/events?access_token='.$accesstoken);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$result = curl_exec($ch);
curl_close($ch);

那我应该怎么做才能捕捉到这里的错误呢？

//if error because access token is invalid,
  do here

// my fixed solution

 $response= json_decode($result);
 if($response->error){ // if result has errors
   echo "Get new token";
 }

Answer 1

探测这个 url:

https://www.googleapis.com/oauth2/v1/tokeninfo?access_token={accessToken}

会给你:

{
  "audience":<your_client_id>,
  "user_id":<user_id_if_userinfo.profile_was_authorized>,
  "scope":"<authorized_scope_1> <authorized_scope_1>",
  "expires_in":<time_to_live>
}

或错误:

{"error":"invalid_token"}