   #PHP Manual Session handling functions session_start session_unset

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                              session_unregister

   (PHP 4 )
   session_unregister --  Unregister a global variable from the current
   session

Description

   bool session_unregister ( string name)

   session_unregister() unregisters the global variable named name from
   the current session.

   This function returns TRUE when the variable is successfully
   unregistered from the session.

     Note: If $_SESSION (or $HTTP_SESSION_VARS for PHP 4.0.6 or less) is
     used, use unset() to unregister a session variable. Do not unset()
     $_SESSION itself as this will disable the special function of the
     $_SESSION superglobal.

   Caution

   This function does not unset the corresponding global variable for
   name, it only prevents the variable from being saved as part of the
   session. You must call unset() to remove the corresponding global
   variable.

   Caution

   If you are using $_SESSION (or $HTTP_SESSION_VARS), do not use
   session_register(), session_is_registered() and session_unregister().
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