PHP Manual . ... PHP 4 >= 4.0.0) session_register -- Register one or more variables with the current session . bool session_register ( mixed name [, mixed ...]) . session_register() accepts a variable number of arguments, any of which can be either a string holding the name of a variable or an array consisting of variable names or other arrays. For each name, session_register() registers the global variable with that name in the current session. ... This registers a global variable. ...