一. Session的配置与应用

?

1.?bool session_start( void ); ? ? ? ? ?--?Initialize session data

2. $_SESSION[name] = value; ? ? ? ? ? ? -- Config session data

3. echo $_SESSION[name]; ? ? ? ? ? ? ? ?-- Use session

4. isset($_SESSION[name]); ? ? ? ? ? ? ?-- 判断session是否已配置

5. unset($_SESSION[name]); ? ? ? ? ? ? ?-- 删除session变量

6.?bool session_destroy( void ); ? ? ? ?-- 删除所有session

?

* session_register，session_unregister, session_is_registered在PHP5中不再使用.

? ? 简单示例：

<?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();
?>

?