//==============COOKIE版本的简单登录================
if ($_GET[out]){
setcookie('id','');
setcookie('pw','');
echo "<script>location.href='index.php'</script>";
}
if ($_POST[name]&&$_POST[password]){
setcookie('id',$_POST[name],time()+3600);
setcookie('pw',$_POST[password],time()+3600);
echo "<script>location.href='index.php'</script>";
}
if ($_COOKIE[id]&&$_COOKIE[pw]){
echo "登录成功<br>用户名：".$_COOKIE[id]."<br>密码：".$_COOKIE[pw];
echo "<a href='index.php?out=out'>退出</a>";
}
?>
<form action="" method="post">
用户ID：<input type="text" name="name"><br><br>
密码：<input type="password" name="password"><br><br>
<input type="submit" value="登录">
</form>
//=========== SESSION 版本的简单登录=================
session_start(); //必须放在最上面，否则会出错
if ($_GET[out]){
unset($_SESSION[id]);
unset($_SESSION[pw]);
}
if ($_POST[name]&&$_POST[password]){
$_SESSION[id]=$_POST[name];
$_SESSION[pw]=$_POST[password];
}
if ($_SESSION[id]&&$_SESSION[pw]){
echo "登录成功<br>用户名：".$_SESSION[id]."<br>密码：".$_SESSION[pw];
echo "<a href='index.php?out=out'>退出</a>";
}
?>
<form action="" method="post">
用户ID：<input type="text" name="name"><br><br>
密码：<input type="password" name="password"><br><br>
<input type="submit" value="登录">
</form>
