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Website Programming in PHP / MYSQL
session_is_registered
(PHP 4, PHP 5)
session_is_registered — Find out whether a global variable is registered in a session
Description
bool session_is_registered
( string $name
)
Finds out whether a global variable is registered in a session.
Parameters
- name
-
The variable name.
Return Values
session_is_registered() returns TRUE if there is a global variable with the name name registered in the current session, FALSE otherwise.
Notes
Note: If $_SESSION (or $HTTP_SESSION_VARS for PHP 4.0.6 or less) is used, use isset() to check a variable is registered in $_SESSION.
Caution
If you are using $_SESSION (or $HTTP_SESSION_VARS), do not use session_register(), session_is_registered() and session_unregister().
