php session_destroy()和session_unset()区别
本文章简单的介绍一下关于session_destroy(),session_unset()区别说明，有需要的朋友可以参考一下。
session_unset()
PHP代码如下:
<?php function session_clean1( $logout =false) { $v = array (); foreach ( $_SESSION as $x => $y ) if ( $x != "redirector" &&( $x != "user" || $logout )) $v []= $x ; foreach ( $v as $x ) unset( $_SESSION [ $x ]); return ; } function session_clean2( $logout =false) { foreach ( $_SESSION as $x => $y ) if ( $x != "redirector" &&( $x != "user" || $logout )) unset( $_SESSION [ $x ]); return ; } function session_clean3( $logout =false) { $s =( $logout ||!isset( $_SESSION [ "user" ]))? array (): array ( "user" => $_SESSION [ "user" ]); if (isset( $_SESSION [ "redirector" ])) $s [ "redirector" ]= $_SESSION [ "redirector" ]; $_SESSION = $s ; } ?>释放当前在内存中已经创建的所有$_SESSION变量,但不删除session文件以及不释放对应的session id
session_destroy()
删除当前用户对应的session文件以及释放session id,内存中的$_SESSION变量内容依然保留,因此,释放用户的session所有资源,需要顺序执行如下代码:
PHP代码如下:
<?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 ( ini_get ( "session.use_cookies" )) { $params = session_get_cookie_params(); setcookie(session_name(), '' , time() - 42000, $params [ "path" ], $params [ "domain" ], $params [ "secure" ], $params [ "httponly" ] ); } // Finally, destroy the session. session_destroy(); ?>查看更多关于php session_destroy()和session_unset()区别 - php函数的详细内容...
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