第一次来这里 我知道有人必须来这里遇到像我这样的问题，但请相信我，我已经在搜索这个网站上遇到了与我类似的问题，但实际上找不到我的问题。问题是我使用WAMP服务器，我的网站运行正常。
在WAMP上，我有index.php（具有登录表单），我有login.php（连接到数据库并验证登录详细信息），我有index2.php（我应该是重定向也），我也有注销，php（它会破坏会话），我有session.php
所有这一切都在我的WAMP服务器上完美运行，但当我将其上传到实时服务器时，我甚至无法登录，经过一些小小的调整，我可以登录但是我得到一个空白页面，因为我卡在登录。 php页面，我没有重定向到index2.php
在WAMP上，我使用（“localhost”，“root”，“”，“modem”） 但对于我的直播服务器，我使用（“localhost”，“alagbeco”，“a12345”，“alagbeco_modem”）
我的脚本
的index.php
<?php
include('login.php'); // Includes Login Script
if(isset($_SESSION['login_user'])){
header("location: index2.php");
}
?>
<html>
<head>
<title>SEAP Divisional Monthly Subscription Database</title>
<link href="style.css" rel="stylesheet" type="text/css">
</head>
<body bgcolor="#E6E6FA">
<br>
<div>
<div style="float: left; margin-left: 340px;>
<a href="index.html"><img src="image/banner.png" alt="" align=""/></a>
</div>
<br><br><br><br><br><br><br><br>
<div style="float:left; border:2px solid #ccc; padding:10px 40px 25px; border-radius:10px; margin-left:500px; width:250px; margin-top:0px;">
<h3>Login Here</h3>
<form action="" method="post">
<label>Username :</label>
<input id="name" name="username" placeholder="username" type="text">
<label>Password :</label>
<input id="password" name="password" type="password">
<br><br><br>
<input name="submit" type="submit" value=" Login ">
<span><?php echo $error; ?></span>
</form>
<a href="reset.php">Change password</a>
</div>
<br><br>
</body>
</html>
index2.php
<?php
include('session.php');
?>
<head>
<style type="text/css">
ul{
padding-left: 0px;
list-style: none;
}
ul li{
float: left;
width: 200px;
text-align: center;
}
ul li a{
display: block;
padding: 5px 10px;
color: #FFF;
background: #0101DF;
text-decoration: none;
}
ul li a:hover{
color: #000000;
background: #F7FE2E;
}
ul li ul{
display: none;
}
ul li:hover ul{
display: block; /* display the dropdown */
}
</style>
</head>
<body bgcolor="#E6E6FA">
<br>
<div>
<div style="float: left; margin-left: 340px;>
<a href="index.html"><img src="image/banner.png" alt="" align=""/></a>
</div>
<br><br><br><br><br><br>
<div style="float: left; margin-left: 1100px; margin-top: 0px;">
<a href="logout.php">Log out</a>
</div>
<br><br>
<!---------------------------row begins------------------------->
<!------------------------------ibadan begins------------------->
<div style="height: 120px; float: left; margin-left: 375px; margin-top: 20px; width: 250px; border: 8px solid #58D3F7;">
<ul>
<li>
<a href="#">Ibadan Division</a>
<ul>
<li><a href="bm/ibadanbm1.php">BM Admin</a></li>
<li><a href="sm/ibadansm1.php">SM/DAM/OM</a></li>
</ul>
</li>
</ul>
</div>
<!-----------------------------ibadan ends-------------------------->
<!------------------------------osun begins-------------------------->
<div style="height: 120px; float: left; margin-left: 50px; margin-top: 20px; width: 250px; border: 8px solid #58D3F7;">
<ul>
<li>
<a href="#">Osun Division</a>
<ul>
<li><a href="bm/osunbm1.php">BM Admin</a></li>
<li><a href="sm/osunsm1.php">SM/DAM/OM</a></li>
</ul>
</li>
</ul>
</div>
<!------------------------------osun ends-------------------->
<br><br><br><br>
<!--------------------row ends------------------------------->
<br><br><br><br><br><br><br><br><br><br>
</body>
的login.php
<?php
session_start(); // Starting Session
$error=''; // Variable To Store Error Message
if (isset($_POST['submit'])) {
if (empty($_POST['username']) || empty($_POST['password'])) {
$error = "Username or Password is invalid";
}
else
{
// Define $username and $password
$username=$_POST['username'];
$password=$_POST['password'];
// Establishing Connection with Server by passing server_name, user_id and password as a parameter
$connection = mysql_connect("localhost","alagbeco","a12345","alagbeco_modem");
// To protect MySQL injection for Security purpose
$username = stripslashes($username);
$password = stripslashes($password);
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);
// Selecting Database
$db = mysql_select_db("alagbeco_modem", $connection);
// SQL query to fetch information of registerd users and finds user match.
$query = mysql_query("select * from user where password = md5('$password') AND username='$username'", $connection);
$rows = mysql_num_rows($query);
if ($rows == 1) {
$_SESSION['login_user']=$username; // Initializing Session
header("location: index2.php"); // Redirecting To Other Page
} else {
$error = "Username or Password is invalid";
}
mysql_close($connection); // Closing Connection
}
}
?>
logout.php
<?php
session_start();
if(session_destroy()) // Destroying All Sessions
{
header("Location: index.php"); // Redirecting To Home Page
}
?>
session.php文件
<?php
// Establishing Connection with Server by passing server_name, user_id and password as a parameter
$connection = mysql_connect("localhost","alagbeco","a12345","alagbeco_modem");
// Selecting Database
$db = mysql_select_db("alagbeco_modem", $connection);
session_start();// Starting Session
// Storing Session
$user_check=$_SESSION['login_user'];
// SQL Query To Fetch Complete Information Of User
$ses_sql=mysql_query("select username from user where username='$user_check'", $connection);
$row = mysql_fetch_assoc($ses_sql);
$login_session =$row['username'];
if(!isset($login_session)){
mysql_close($connection); // Closing Connection
header('Location: index.php'); // Redirecting To Home Page
}
?>
答案 0 :(得分：0)
我几乎可以肯定你的页面有错误，正如alfallouji写的那样。
mysql和mysqli不一样，我建议您也在本地服务器上安装mysqli。
不难做到，并节省了大量的调试时间。
答案 1 :(得分：0)
您在进行连接时出错
试试：
<?php
$host='localhost';
$user='alagbeco';
$password='a12345';
$db='alagbeco_modem';
//If your PHP version is lower than 5.5
$con = mysql_connect($host,$user,$password) or exit("Connection Error");
$connection = mysql_select_db($db, $con);
//If your PHP version is equal or higher than 5.5
$connection = mysqli_connect($host,$user,$password,$db);
?>