PHP 手冊
前一頁 |  | 下一頁

# session_destroy

(PHP 4 , PHP 5)

session_destroy -- Destroys all data registered to a session

## Description

bool session_destroy ( void )

session_destroy() destroys all of the data associated with the current session. It does not unset any of the global variables associated with the session, or unset the session cookie.

In order to kill the session altogether, like to log the user out, the session id must also be unset. If a cookie is used to propagate the session id (default behavior), then the session cookie must be deleted. setcookie() may be used for that.

成功回傳`TRUE`失敗回傳`FALSE`。

範例 1. Destroying a session with $_SESSION

`<?php
// Initialize the session.
// If you are using session_name("something"), don't forget it now!
session_start();
// Unset all of the session variables.
$_SESSION = array();
// If it's desired to kill the session, also delete the session cookie.
// Note: This will destroy the session, and not just the session data!
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/');
}
// Finally, destroy the session.
session_destroy();
?>`

> 注: Only use session_unset() for older deprecated code that does not use $_SESSION.

See also unset() and setcookie().

前一頁 | 內容 | 下一頁
session_decode | 上一層 | session_encode