Authentication is the act of verifying who a user is, and is the basis of the login process. Typically, authentication uses the combination of an identifier--a username or email address--and a password. The user submits these values through a form, and the application then compares the submitted information against that previously stored (e.g., upon registration).
Authentication is the process of determining the identity of a user. It typically uses an identifier
(e.g. a username or an email address) and a secret token (e.g. a password or an access token) to judge
if the user is the one whom he claims as. Authentication is the basis of more complex security-related
features, such as login.
In Yii, this entire process is performed semi-automatically, leaving the developer to merely implement [[yii\web\IdentityInterface]], the most important class in the authentication system. Typically, implementation of `IdentityInterface` is accomplished using the `User` model.
In Yii, this entire process is performed semi-automatically, leaving the developer to merely implement
[[yii\web\IdentityInterface]], the most important class in the authentication system.
Typically, implementation of `IdentityInterface` is accomplished using the `User` model.
You can find a fully featured example of authentication in the
[advanced project template](https://github.com/yiisoft/yii2-app-advanced/blob/master/docs/guide/README.md). Below, only the interface methods are listed:
Qiang Xue
10 years ago