我将登录php脚本从一台相当旧的服务器移动到了一台较新的服务器。所有设置和 chmod 都相同，但 php 脚本在较新的服务器上不起作用。 输入正确的登录名和密码时，它不会转到main.php而是停留在索引.php登录页面上并添加此消息"用户名或密码无效！ } } ？>".
我是一个编程菜鸟，但也许脚本使用某些编码，最好不要在较新的服务器上使用。任何想法对脚本进行哪些更改，以便它可以再次工作？提前谢谢你。
以下是索引.php登录页面的代码：
<?
ob_start("ob_gzhandler");
session_start();
$username = "admin";
$password = "admin";
// main page
$mainpage = "main.php";
if(isset($_SESSION['logedin']))
if($_SESSION['logedin'] == 'loggedin')
{
header("Location: $mainpage");
exit();
}
if(isset($_POST['submit']))
{
if($_POST['username'] == $username && $_POST['password'] == $password)
{
$_SESSION['logedin'] = 'loggedin';
// Redirect to the page
header("Location: $mainpage");
exit();
}
else
{
$error = '<br /><br />Invalid Username or Password!';
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-US">
<head>
<title>test</title>
<meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />
<style type="text/css">
html, body, #wrapper {
height:100%;
width: 100%;
margin: 0;
padding: 0;
border: 0;
}
#wrapper td {
vertical-align: middle;
text-align: center;
}
#headerBox {
border: 1px solid #A6E0FF;
width: 800px;
color: #00529B;
background: #EDF8FE;
height: 150px;
text-align: center;
margin: 0px auto;
}
#top {
color: #00529B;
background: #DAF3FF;
text-align: center;
border-bottom: 1px solid #BFE9FF;
padding-top: 10px;
padding-bottom: 10px;
font-weight:bold;
}
#bottom {
color: #00529B;
background: #EDF8FE;
text-align: center;
padding-top: 30px;
}
</style>
</head>
<body>
<table id="wrapper">
<tr>
<td>
<div id="headerBox">
<form method="post" id="login" action="index.php">
<div id="top">Log In</div>
<div id="bottom">
Username: <input id="username" name="username" type="text" />
Password: <input id="password" name="password" type="password" />
<input type="submit" name="submit" id="submit" value="Log in" />
<? if(isset($error)) echo $error; ?>
</div>
</form>
</div>
</td>
</tr>
</table>
<script type="text/javascript">
//<![CDATA[
<!--
document.getElementById("username").focus();
//-->
//]]>
</script>
</body>
</html>
您似乎在 if 语句后缺少一个左括号，所以这应该有效：
<?php
ob_start("ob_gzhandler");
session_start();
$username = "admin";
$password = "admin";
// main page
$mainpage = "main.php";
if(isset($_SESSION['logedin']))
{
if($_SESSION['logedin'] == 'loggedin')
{
header("Location: $mainpage");
exit();
}
}
if(isset($_POST['submit']))
{
if($_POST['username'] == $username && $_POST['password'] == $password)
{
$_SESSION['logedin'] = 'loggedin';
// Redirect to the page
header("Location: $mainpage");
exit();
}
else
{
$error = '<br /><br />Invalid Username or Password!';
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-US">
<head>
<title>test</title>
<meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />
<style type="text/css">
html, body, #wrapper {
height:100%;
width: 100%;
margin: 0;
padding: 0;
border: 0;
}
#wrapper td {
vertical-align: middle;
text-align: center;
}
#headerBox {
border: 1px solid #A6E0FF;
width: 800px;
color: #00529B;
background: #EDF8FE;
height: 150px;
text-align: center;
margin: 0px auto;
}
#top {
color: #00529B;
background: #DAF3FF;
text-align: center;
border-bottom: 1px solid #BFE9FF;
padding-top: 10px;
padding-bottom: 10px;
font-weight:bold;
}
#bottom {
color: #00529B;
background: #EDF8FE;
text-align: center;
padding-top: 30px;
}
</style>
</head>
<body>
<table id="wrapper">
<tr>
<td>
<div id="headerBox">
<form method="post" id="login" action="index.php">
<div id="top">Log In</div>
<div id="bottom">
Username: <input id="username" name="username" type="text" />
Password: <input id="password" name="password" type="password" />
<input type="submit" name="submit" id="submit" value="Log in" />
<?php if(isset($error)) { echo $error; } ?>
</div>
</form>
</div>
</td>
</tr>
</table>
<script type="text/javascript">
//<![CDATA[
<!--
document.getElementById("username").focus();
//-->
//]]>
</script>
</body>
</html>