会话寄存器因弃用而无法正常工作

Question

我有2个文件[a.php和b.php]

a.php代码

<?PHP
$msg= "Hello world";
session_register('msg');
header("Location: b.php ");
exit;
?>

和b.php代码

<?PHP echo  $msg ; session_unregister('msg')?>

但是

php手册说“This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged.”

所以我可以做出任何改变，以便再次运作？

Answer 1

<强> a.php只会

<?php
session_start();
$_SESSION['msg'] = 'Hello world';
header("Location: b.php ");
exit;
?>

<强> b.php

<?php
session_start();
echo $_SESSION['msg'];
unset($_SESSION['msg']);
?>