页面不会跳转，也没有输入密码错误的提示
<?php
/**
* Created by PhpStorm.
* User: KEVIN
* Date: 2017-11-30
* Time: 17:00
*/
if(isset($_GET['action'])) {
if ($_GET['action'] == 'login') {
if ($_POST['name'] == 'admin' && $_POST['pwd'] == 123456) {
setcookie('userName', $_POST['name'], time() + 3600 * 24);
header('Location:index.php');
} else {
echo '<script>alert("用户名或密码不对！");</script>';
}
} elseif ($_GET['action'] == 'logout') {
setcookie('username', '', time() - 3600);//注销cookie
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>用户登陆</title>
</head>
<body>
<form action="<?php echo $_SERVER['PHP_SELF'];?>?action=login" methond="post">
<fieldset>
<legend>用户登陆</legend>
<lable for="name">用户名：</lable>
<input type="text" name="name" id="name">
<lable for="pwd">密码：</lable>
<input type="password" name="pwd" id="pwd">
<input type="submit" value="提交">
</fieldset>
</form>
</body>
</html>
#
