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Uma instância da classe Usuário representa um usuário. As instâncias de usuário são exclusivas e comparáveis. Se duas instâncias são iguais, elas representam o mesmo usuário.
É possível usar a função UserService::getCurrentUser() independentemente da opção de autenticação usada pelo aplicativo.
Uma instância de User também pode ser criada com base em um endereço de e-mail:
$user = new User('Albert.Johnson@example.com');
Se o User::__construct() for chamado com um endereço de e-mail que não corresponde a uma Conta do Google válida, o objeto será criado, mas não corresponderá a uma Conta do Google real. Este será o caso mesmo se alguém criar uma conta do Google com o determinado endereço de e-mail depois que o objeto for armazenado. Um valor Usuário com um endereço de e-mail que não representa uma conta do Google no momento da sua criação nunca corresponderá a um valor Usuário que representa um usuário real.
O objeto User de um usuário válido pode fornecer um valor de ID exclusivo que permanece igual mesmo se o endereço de e-mail for alterado. O método getUserId() retorna esse ID, um valor string.
O objeto User tem a mesma forma, independentemente do método de autenticação usado pelo app.
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Difícil de entender","hardToUnderstand","thumb-down"],["Informações incorretas ou exemplo de código","incorrectInformationOrSampleCode","thumb-down"],["Não contém as informações/amostras de que eu preciso","missingTheInformationSamplesINeed","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-08-19 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eUser\u003c/code\u003e class represents a unique user, and two equal instances signify the same user.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eUserService::getCurrentUser()\u003c/code\u003e retrieves the \u003ccode\u003eUser\u003c/code\u003e instance for the current user, regardless of the authentication method.\u003c/p\u003e\n"],["\u003cp\u003eA \u003ccode\u003eUser\u003c/code\u003e instance can be created from an email address, but it may not correspond to a valid Google account.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003egetUserId()\u003c/code\u003e method of a \u003ccode\u003eUser\u003c/code\u003e object provides a unique ID that remains consistent even if the user's email changes.\u003c/p\u003e\n"],["\u003cp\u003eThis API is only for first-generation runtimes, and a migration guide is available for updates to PHP 7/8 runtimes.\u003c/p\u003e\n"]]],[],null,["# User Objects\n\nAn instance of the [User](/appengine/docs/legacy/standard/php/refdocs/classes/google.appengine.api.users.User) class represents a user. User instances are unique and comparable. If two instances are equal, then they represent the same user.\n| This page describes how to use the legacy bundled services and APIs. This API can only run in first-generation runtimes in the App Engine standard environment. If you are updating to the App Engine PHP 7/8 runtime, refer to the [migration guide](/appengine/migration-center/standard/migrate-to-second-gen/php-differences) to learn about your migration options for legacy bundled services.\n\nThe application can access the User instance for the current user by calling the [`UserService::getCurrentUser()`](/appengine/docs/legacy/standard/php/refdocs/classes/google.appengine.api.users.UserService#method_getCurrentUser) function. \n\n use google\\appengine\\api\\users\\UserService;\n\n $user = UserService::getCurrentUser();\n\n if (isset($user)) {\n return sprintf('Welcome, %s! (\u003ca href=\"%s\"\u003esign out\u003c/a\u003e)',\n $user-\u003egetNickname(),\n UserService::createLogoutUrl('/'));\n } else {\n return sprintf('\u003ca href=\"%s\"\u003eSign in or register\u003c/a\u003e',\n UserService::createLoginUrl('/'));\n }\n\nYou can use the `UserService::getCurrentUser()` function no matter which authentication option your app uses.\n\nA User instance can be also constructed from an email address: \n\n $user = new User('Albert.Johnson@example.com');\n\nIf the [`User::__construct()`](/appengine/docs/legacy/standard/php/refdocs/classes/google.appengine.api.users.User#method___construct) is called with an email address that does not correspond with a valid Google account, the object will be created but it will not correspond with a real Google account. This will be the case even if someone creates a Google account with the given email address after the object is stored. A User value with an email address that does not represent a Google account at the time it is created will never match a User value that represents a real user.\n\nThe User object for a valid user can provide a unique ID value for the user that stays the same even if the user changes her email address. The [`getUserId()`](/appengine/docs/legacy/standard/php/refdocs/classes/google.appengine.api.users.User#method_getUserId) method returns this ID, a `string` value.\n\nThe User object has the same form no matter which method of authentication your app uses."]]