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When access is no longer needed, the user can log out, log off, sign out or sign off. Procedure Finger print login, a recent banking security application.
In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g. a web browser) to provide a user name and password when making a request. In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic <credentials>, where <credentials> is the Base64 encoding of ID ...
Logout function. A logout function is useful as it allows users to indicate that a session should not allow further requests. Thus attacks can only be effective while a session is active. Note that the following code performs no Cross-site request forgery checks, potentially allowing an attacker to force users to log out of the web application.
If you decide to log on using a public computer, remember to log out when done. Be careful when running user scripts. Some scripts can be programmed to steal cookies and thus compromise accounts. Consider committing to your identity by adding a cryptographic hash to your user page to prove that you are really the person behind your username.
PHP is a general-purpose scripting language that is especially suited to server-side web development, in which case PHP generally runs on a web server. Any PHP code in a requested file is executed by the PHP runtime, usually to create dynamic web page content or dynamic images used on websites or elsewhere. [282]
PHP generally follows C syntax, with exceptions and enhancements for its main use in web development, which makes heavy use of string manipulation. PHP variables must be prefixed by " $ ". This allows PHP to perform string interpolation in double quoted strings, where backslash is supported as an escape character.
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Login session. In computing, a login session is the period of activity between a user logging in and logging out of a (multi-user) system . On Unix and Unix-like operating systems, a login session takes one of two main forms: When a textual user interface is used, a login session is represented as a kernel session — a collection of process ...