如何知道访问令牌是否在Google Api PHP中过期


How to know if Access Token expires in Google Api PHP

我如何知道我的访问令牌是否已过期。

我正在使用尝试捕获

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"获取新令牌"

如果我想使用卷曲

$ch = curl_init();
curl_setopt($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);

那么我该怎么做才能发现这里的错误呢?

//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";
 }

探测此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"}

捕获异常。检查HTTP错误代码是否为401(未经授权)。这意味着您的访问令牌已过期,此时是您刷新访问令牌的时间。