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PHP manages sessions by storing session variables in files on disk. The session ID is used as part of the filename. PHP allows user-defined handlers to be written that change how sessions are managed.  Start your PHP script with session_start() The session_start() function either creates a new session, if one does not exist, or it continues an existing session The session creates a temporary file that stores various session variables and their values The session ID is stored in a cookie within the user's browser The cookie is called PHPSESSID by default The session is destroyed when you... Show more

PHP manages sessions by storing session variables in files on disk. The session ID is used as part of the filename. PHP allows user-defined handlers to be written that change how sessions are managed. 
Start your PHP script with session_start()
The session_start() function either creates a new session, if one does not exist, or it continues an existing session
The session creates a temporary file that stores various session variables and their values
The session ID is stored in a cookie within the user's browser
The cookie is called PHPSESSID by default
The session is destroyed when you close the website
The file is available to all the pages of the website to access information about the user
You need to set the path for this file using the session.save_path setting from the php.ini file 

The SessionHandler class in PHP exposes the current internal PHP session save handler. 

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