session_start();//开始会话
session_destroy();//终止会话.
$_SESSION['aaa'] = $aaa;//将$aaa的值注册到SESSION;
$me = $_SESSION['aaa'];//将$_SESSION['aaa']的值赋给$me如果你的$name是用session_register('name')注册的.
直接用$username = $name
session_destroy();//终止会话.
$_SESSION['aaa'] = $aaa;//将$aaa的值注册到SESSION;
$me = $_SESSION['aaa'];//将$_SESSION['aaa']的值赋给$me如果你的$name是用session_register('name')注册的.
直接用$username = $name
然后就可以用你定义的session变量了。