首先是登入页面
<form action="" method="post"> <input type="text" name="uname"><br /> <input type="password" name="psw"><br /> <input type="submit" name="btn" value="登录"> </form> <?php if(isset($_POST['btn'])){ $uname=$_POST['uname']; $psw=$_POST['psw']; if($uname=="tom" && $psw==123){ echo "登录成功,2秒后跳转到首页…………"; setcookie('uname',$uname); header("refresh:2;url=index.php"); }else{ echo "<script>alert('用户名密码错误!')</script>"; } } ?>
然后是主页面
<?php if(!isset($_COOKIE['uname'])){ echo "<script>alert('当前用户未登录!');window.location='login.php'</script>"; exit; } echo sizeof(); echo "您是".$_COOKIE['uname']."欢迎访问!"; ?> <a href="quit.php">退出</a>
退出页面控制
<?php setcookie('uname','',time()-10); header("location:login.php");