php - Isset 不适用于对象的内容

Question

当我打印它时，我有 $list 然后我得到以下输出

AWeberEntry Object
(
[_privateData:protected] => Array
    (
        [0] => resource_type_link
        [1] => http_etag
    )

[_localDiff:protected] => Array
    (
    )

[_collections:protected] => Array
    (
    )

[adapter] => OAuthApplication Object
    (
        [debug] => 
        [userAgent] => AWeber OAuth Consumer Application 1.0 - https://labs.aweber.com/
        [format] => 
        [requiresTokenSecret] => 1
        [signatureMethod] => HMAC-SHA1
        [version] => 1.0
        [curl] => CurlObject Object
            (
            )

        [user] => OAuthUser Object
            (
                [authorizedToken] => 
                [requestToken] => 
                [verifier] => 
                [tokenSecret] => BoPWmqWup6T1oAJAS0BJnKkN830iebnruCQ9I2FL
                [accessToken] => AgJbZty67Z4w1uByP728Ybsr
            )

        [consumerKey] => AkaXl8e3tPa3urnbNI4YvBYQ
        [consumerSecret] => kVGhArLuQT8iY4qMJ94dAk9nmWonKRuKHEBhpa2r
        [app] => AWeberServiceProvider Object
            (
                [baseUri] => https://api.aweber.com/1.0
                [accessTokenUrl] => https://auth.aweber.com/1.0/oauth/access_token
                [authorizeUrl] => https://auth.aweber.com/1.0/oauth/authorize
                [requestTokenUrl] => https://auth.aweber.com/1.0/oauth/request_token
            )

    )

[data] => Array
    (
        [total_unconfirmed_subscribers] => 0
        [total_subscribers_subscribed_yesterday] => 0
        [unique_list_id] => awlist3561167
        [http_etag] => "0f9b24fd3d578a7fa402bda6cf029732c2ae9dba-ca5feee2b7fbb6febfca8af5541541ea960aaedb"
        [web_form_split_tests_collection_link] => https://api.aweber.com/1.0/accounts/390249/lists/3561167/web_form_split_tests
        [subscribers_collection_link] => https://api.aweber.com/1.0/accounts/390249/lists/3561167/subscribers
        [total_subscribers_subscribed_today] => 0
        [id] => 3561167
        [total_subscribed_subscribers] => 519
        [total_unsubscribed_subscribers] => 22
        [campaigns_collection_link] => https://api.aweber.com/1.0/accounts/390249/lists/3561167/campaigns
        [custom_fields_collection_link] => https://api.aweber.com/1.0/accounts/390249/lists/3561167/custom_fields
        [self_link] => https://api.aweber.com/1.0/accounts/390249/lists/3561167
        [total_subscribers] => 541
        [resource_type_link] => https://api.aweber.com/1.0/#list
        [web_forms_collection_link] => https://api.aweber.com/1.0/accounts/390249/lists/3561167/web_forms
        [name] => 7affsubniche
    )

[_dynamicData] => Array
    (
    )

[url] => /accounts/390249/lists/3561167
)

现在当我使用

echo $list->unique_list_id;

然后它显示了正确的输出。但当我尝试时

if(isset($list->unique_list_id)) {

} else {
        echo 'check 1';
}

然后它总是以其他条件出现。虽然unique_list_id是在$list中设置的。我也尝试过使用 property_exists 但它也不起作用。

所以我的问题是如何将 isset 与对象数据一起使用。

Answer 1

我看到您的 unique_list_id 位于 data 属性中。所以你可以通过以下方式检查它们:

if(isset($list->data['unique_list_id'])) {
    // do something
} else {
    // do another one
}