(PHP 5 >= 5.4.0, PHP 7) Write session data

(PHP 5 >= 5.4.0, PHP 7) Read session data

(PHP 4, PHP 5 < 5.4.0) Find out whether a global variable is registered in a session

(PHP 4, PHP 5, PHP 7) Get and/or set the current session name

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Write session data and end session

(PHP 5 >= 5.4.0, PHP 7) Close the session

(PHP 5 >= 5.5.1, PHP 7) Return a new session ID

(PHP 4, PHP 5 < 5.4.0) Register one or more global variables with the current session

(PECL session_pgsql SVN) Get current save handler status

(PHP 4 >= 4.2.0, PHP 5 <= 5.1.2) Call an escape function within the msession personality plugin