PHP 매뉴얼
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# session_unset

(PHP 4 , PHP 5)

session_unset -- Free all session variables

## Description

void session_unset ( void )

The session_unset() function frees all session variables currently registered.

> 참고: If `$_SESSION` (or `$HTTP_SESSION_VARS` for PHP 4.0.6 or less) is used, use unset() to unregister a session variable, i.e. `unset ($_SESSION['varname']);`.

경고
Do NOT unset the whole `$_SESSION` with `unset($_SESSION)` as this will disable the registering of session variables through the `$_SESSION` superglobal.

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session_unregister | 위로 | session_write_close