我正在使用PHP和MySQL处理管理员登录页面。我正在使用XAMPP控制面板v3.2.2和Chrome浏览器。
我在管理员登录页面中使用了session和cookie但我发现了以下错误
Notice: Undefined index: nam in C:\xampp\htdocs\online_voting\admin\index.php on line 3
Notice: Undefined index: pas in C:\xampp\htdocs\online_voting\admin\index.php on line 4
在我的index.php页面中。
我找不到此错误的原因。可能是什么问题？
这是我的MySQL数据库连接页面。
<?php
error_reporting(1);
mysql_connect('localhost', 'root', '') or die(mysql_error());
mysql_select_db('poll') or die(mysql_error());
?>
Email : admin@gmail.com
Password : admin
poll，表名为tbadministrators。-- Table structure for table `tbadministrators`
--
CREATE TABLE IF NOT EXISTS `tbadministrators` (
`admin_id` int(5) NOT NULL AUTO_INCREMENT,
`first_name` varchar(45) NOT NULL,
`last_name` varchar(45) NOT NULL,
`email` varchar(45) NOT NULL,
`password` varchar(45) NOT NULL,
PRIMARY KEY (`admin_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;
--
-- Dumping data for table `tbadministrators`
--
INSERT INTO `tbadministrators` (`admin_id`, `first_name`, `last_name`, `email`, `password`) VALUES
(1, 'Md. Rezwanul', 'Haque', 'admin@gmail.com', '21232f297a57a5a743894a0e4a801fc3');
-- --------------------------------------------------------
我使用以下页面进行管理员登录。
<?php
session_start();
$myusername = $_SESSION['nam'] ;
$mypassword = $_SESSION['pas'] ;
?>
<?php
if(isset($_COOKIE['$email']) && $_COOKIE['$pass']){
header("Location:admin.php");
exit;
}
?>
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title>Admin Login Form</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css">
<link rel='stylesheet prefetch' href='https://fonts.googleapis.com/css?family=Roboto:400,100,300,500,700,900|RobotoDraft:400,100,300,500,700,900'>
<link rel='stylesheet prefetch' href='https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css'>
<link rel="stylesheet" href="css/style.css">
<script language="JavaScript" src="js/admin.js">
</script>
</head>
<body style="background-image:url('images/demo/backgrounds/bCY7Scu.png');">
<div class="pen-title">
<h1>Admin Login Form</h1>
</div>
<div class="container" >
<div class="card"></div>
<div class="card">
<h1 class="title">Login</h1>
<form name="form1" action="checklogin.php" method="post" onsubmit="return loginValidate(this)">
<div class="input-container">
<input name="myusername" value="<?php echo $myusername ?>" type="text" required="required"/>
<label>Email</label>
<div class="bar"></div>
</div>
<div class="input-container">
<input name="mypassword" value="<?php echo $mypassword ?>" type="password" required="required"/>
<label>Password</label>
<div class="bar"></div>
</div>
<center><tr><td colspan="2" align="center"><input type="checkbox" name="remember" value="1"> <font color="blue">Remember Me</font></td></tr></center><br>
<div class="button-container">
<button name="Submit"><span>Login</span></button>
</div>
<br><br>
<center>Return to <a href="http://localhost/online_voting/index.php">Voter Panel</a></center>
</form>
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<body style="background-color:powderblue;">
<?php
//session_start();
ini_set ("display_errors", "1");
error_reporting(E_ALL);
ob_start();
session_start();
require('../connection.php');
$tbl_name="tbAdministrators"; // Table name
/*
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
$encrypted_mypassword=md5($mypassword);
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
*/
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
$encrypted_mypassword=md5($mypassword);
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE email='$myusername' and password='$encrypted_mypassword'" or die(mysql_error());
$result=mysql_query($sql) or die(mysql_error());
$count=mysql_num_rows($result);
if($count==1){
// If everything checks out, you will now be forwarded to admin.php
// $user = mysql_fetch_assoc($result);
// $_SESSION['admin_id'] = $user['admin_id'];
// header("location:admin.php");
if(isset($_POST['remember']))
{
setcookie('$email',$_POST['myusername'], time()+30*24*60*60);
setcookie('$pass', $_POST['mypassword'],time()+30*24*60*60);
$_SESSION['curname']=$myusername;
$_SESSION['curpass']=$mypassword;
$user = mysql_fetch_assoc($result);
$_SESSION['admin_id'] = $user['admin_id'];
header("Location:admin.php");
exit;
}
else
{
$log1=11;
$_SESSION['log1'] = $log1;
$_SESSION['curname']=$myusername;
$_SESSION['curpass']=$mypassword;
$user = mysql_fetch_assoc($result);
$_SESSION['admin_id'] = $user['admin_id'];
header("Location:admin.php");
exit;
}
}
//If the username or password is wrong, you will receive this message below.
else {
echo "<br> <br> <br> ";
echo "<center> <h3>Wrong Username or Password<br><br>Return to <a href=\"index.php\">login</a> </h3></center>";
}
ob_end_flush();
?>
</body>
</html>
<?php
session_start();
require('../connection.php');
$log1 = $_SESSION['log1'];
?>
<?php
if(isset($_COOKIE['$email']) && $_COOKIE['$pass']){
$curnam = $_SESSION['curname'];
$curpas = $_SESSION['curpass'];
}
else if($log1 == 11)
{
$curnam = $_SESSION['curname'];
$curpas = $_SESSION['curpass'];
}
else
{
echo '<img src="e1.jpg" width="100%" height="100%" />'; /* here goes the page when destroy the cookies */
exit;
}
?>
<!DOCTYPE html>
<html>
<head>
<title>online voting</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link href="layout/styles/layout.css" rel="stylesheet" type="text/css" media="all">
<script language="JavaScript" src="js/user.js">
</script>
</head>
<body id="top">
<div class="wrapper bgded overlay" style="background-image:url('images/demo/backgrounds/background1.jpg');">
<section id="testimonials" class="hoc container clear">
<h2 class="font-x3 uppercase btmspace-80 underlined"> Online <a href="#">Voting</a></h2>
<ul class="nospace group">
<li class="one_third">
<blockquote>In this page, Admin can set candidates for voting and view results.</blockquote>
</li>
</ul>
</section>
</div>
<!-- JAVASCRIPTS -->
<script src="layout/scripts/jquery.min.js"></script>
<script src="layout/scripts/jquery.backtotop.js"></script>
<script src="layout/scripts/jquery.mobilemenu.js"></script>
<!-- IE9 Placeholder Support -->
<script src="layout/scripts/jquery.placeholder.min.js"></script>
<!-- / IE9 Placeholder Support -->
</body>
</html>
<?php
session_start();
//session_destroy();
/*header("location: index.php");
exit;*/
if( isset($_COOKIE['$email']) and isset($_COOKIE['$pass'])){
setcookie('$email',' ',time()-30*24*60*60);
setcookie('$pass',' ',time()-30*24*60*60);
$nam=$_COOKIE['$email'];
$pas=$_COOKIE['$pass'];
$_SESSION['nam'] = $nam;
$_SESSION['pas'] = $pas;
header("location: index.php");
exit;
}
else
{
header("location: index.php");
exit;
}
?>
PHP: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset"
从他们的解决方案中无法帮助我。
答案 0 :(得分：1)
当您第一次访问该页面时，您的值未在会话中设置。因此，您必须首先检查是否设置了值，然后分配值。在 index.php ：
中更改以下内容conda install scrapy