session_reset

(PHP 5 >= 5.6.0, PHP 7, PHP 8)

session_reset — Re-initialize session array with original values

说明

session_reset ( ) : bool

session_reset() reinitializes a session with original values stored in session storage. This function requires an active session and discards changes in $_SESSION.

参数

此函数没有参数。

返回值

成功时返回 true，或者在失败时返回 false。

更新日志

版本	说明
7.2.0	The return type of this function is bool now. Formerly, it has been void.

参见

$_SESSION
The session.auto_start configuration directive
session_start() - 启动新会话或者重用现有会话
session_abort() - Discard session array changes and finish session
session_commit() - session_write_close 的别名

User Contributed Notes

parsa dot mhn at outlook dot com 02-Sep-2015 08:14


First of all you should execute this code :

<?php

    session_start();

    $_SESSION["A"] = "Some Value";

?>



then you should execute this one : 



<?php

    start_session();

    $_SESSION["A"] = "Some New Value";  // set new value



    session_reset();  // old session value restored

    echo $_SESSION["A"];



    //Output: Some Value

?>



That is because session_reset() is rolling back changes to the last saved session data, which is their values right after the session_start().

vijay dot mits at gmail dot com 21-Apr-2015 09:12


first create a session variable



<?php

    session_start();

    $_SESSION["A"] = "Some Value";

    echo $_SESSION["A"];



    //Output: Some Value



    //if you need to rollback the session values after seting new value to session variables use session_reset()



    $_SESSION["A"] = "Some New Value";  // set new value

    

    session_reset();  // old session value restored

    echo $_SESSION["A"];



    //Output: Some Value

?>