基础贴index.php
 <?php 
session_start();
session_unset();
session_destroy();
session_register("pass");
$password=111;
$HTTP_SESSION_VARS["pass"]=$password;
echo $HTTP_SESSION_VARS["pass"];?> 
<a href="session.php">
请点击第二页面</a> 
session.php<?php
session_start();
$i=$_SESSION['pass'];
if(isset($i))
{
echo "成功";
echo $i;
}
else
{
echo "失败";

}?>