How does session work in PHP?
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How does session work in PHP?
In PHP, a session provides a way to store web page visitor preferences on a web server in the form of variables that can be used across multiple pages. Unlike a cookie, variable information is not stored on the user’s computer.
How does $_ session work in PHP?
Sessions follow a simple workflow. When a session is started, PHP will either retrieve an existing session using the ID passed (usually from a session cookie) or if no session is passed it will create a new session. PHP will populate the $_SESSION superglobal with any session data after the session has started.
How long does a session last PHP?
Default php. ini sets the session expiration time to 30 minutes. As long as the browser have the cookie stored, it doesn’t matter if it is closed or is open.
How is PHP session data stored?
PHP Default Session Storage (File System): In PHP, by default session data is stored in files on the server. Each file is named after a cookie that is stored on the client computer. This session cookie (PHPSESSID) presumably survives on the client side until all windows of the browser are closed.
A session is a way to store information (in variables) to be used across multiple pages. Unlike a cookie, the information is not stored on the users computer.
What is PHP session start?
session_start() creates a session or resumes the current one based on a session identifier passed via a GET or POST request, or passed via a cookie. When session_start() is called or when a session auto starts, PHP will call the open and read session save handlers. When session.
Sessions in PHP normally do use cookies to function. But, PHP sessions can also work without cookies in case cookies are disabled or rejected by the browser that the PHP server is trying to communicate with.
Which is better session or cookie in PHP?
The main difference is security, because if you use cookies directly clients can see and/or edit them themselves, but for session the data is stored on the server side so client cannot access directly. So if the data only lasts for that session, I prefer using session.