(PHP 4 >= 4.2.0, PHP 5 <= 5.1.2) Find all sessions with name and value

(PHP 4 >= 4.2.0, PHP 5 <= 5.1.2) Get unique id

(PHP 4, PHP 5, PHP 7) Sets user-level session storage functions

(PHP 5 >= 5.6.0, PHP 7) Re-initialize session array with original values

(PHP 4, PHP 5, PHP 7) Free all session variables

(PHP 4, PHP 5, PHP 7) Start new or resume existing session

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

(PHP 4 >= 4.2.0, PHP 5 <= 5.1.2) Get value from session

(PHP 4 >= 4.2.0, PHP 5 <= 5.1.2) Get array of msession variables

(PHP 4 >= 4.2.0, PHP 5 <= 5.1.2) Increment value in session