session_unregister

(PHP 4, PHP 5 < 5.4.0)

session_unregister — Unregister a global variable from the current session

说明

bool session_unregister ( string $name )

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

Warning

This function has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0.

参数

name: The variable name.

返回值

成功时返回 TRUE，或者在失败时返回 FALSE.

注释

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().

add a note User Contributed Notes session_unregister

dylan82 AT xs4all DOT nl 09-Dec-2004 01:13


If globals is on, you'll have to unset the $_SESSION[varname] as well as the $varname.



Like:



unset($_SESSION[varname]);

unset($varname);

jsmith at uncommoner dot com 26-Nov-2004 10:55


as a side note you must have session_start() set inorder to actually unregister the session varibles.

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