客户在登录此页面时遇到问题。他们被分配了一个数字，无论他们的数字是多少，他们都会得到一个空白页。如果他们输入无效密码，他们会收到一条无效密码消息，所以我知道那部分代码正在运行。我还在浏览器中验证了每个客户端应该去的实际目的地是否正常工作。如果您能提供任何帮助，我们将不胜感激!
<Doctype HTML>
<html>
<head>
<?php
//include the required functions
include(' ./includes/functions.php');
//make connection
$db = conn();
//check for username and password
if(isset($_POST['username']) && isset($_POST['password'])) {
//Query the db for the user
$result = $db->query("SELECT * FROM users WHERE username ='{$_POST['username']}'");
//fetch the result set
$row = $result->fetch_assoc();
//check credentials again the database
if ($result == true && md5($_POST['password']) == $row['password']){
//store user as seesion variable
$_SESSION['valid_user'] = $_POST['username'];
/*
* @Locations:
* /admin, /calc, /live
*
* @Authorization Levels
* 1 = production employee
* 2 = Quality tech
* 3 = Management
* 0 = not authorized
*
* @var = $row['active']
*/
if ($row['active'] == '3') {
header('Location: ./admin/index.php ');
}
elseif ($row['active'] == 2) {
header('Location: ./calc/index.php ');
}
elseif ($row['active'] == 1) {
header('Location: ./live/data.php ');
}
}
elseif ($_POST['password'] != $row['password']) {
echo ('Password Incorrect');
}
}
else
{
?>
<style type="text/css">
body
{
margin: 0;
/* IE10 */
background-image: -ms-linear-gradient(bottom, #FFFFFF 0%, #7EBC50 100%);
background-repeat: no-repeat;
/* Mozilla Firefox */
background-image: -moz-linear-gradient(bottom, #FFFFFF 0%, #7EBC50 100%);
background-repeat: no-repeat;
/* Opera */
background-image: -o-linear-gradient(bottom, #FFFFFF 0%, #7EBC50 100%);
/* Webkit (Safari/Chrome 10) */
background-image: -webkit-gradient(linear, left bottom, left top, color-stop(0, #FFFFFF), color-stop(1, #7EBC50));
/* Webkit (Chrome 11+) */
background-image: -webkit-linear-gradient(bottom, #FFFFFF 0%, #7EBC50 100%);
/* Proposed W3C Markup */
background-image: linear-gradient(bottom, #FFFFFF 0%, #7EBC50 100%);
/* IE6-IE9 */
filter: progid:DXImageTransform.Microsoft.gradient(startColorStr='#7EBC50', EndColorStr='#FFFFFF');
}
#login
{
background-color: #FBFBCA;
width: 15em;
margin-right: auto;
margin-left: auto;
margin-top: 15%;
margin-bottom: auto;
border: 2px solid #3A8E00;
border-radius: 5px;
text-align: center;
padding-bottom: 1em;
box-shadow: 10px 10px 5px #888888;
-moz-box-shadow: 10px 10px 5px #888888;
}
#login .text, h4
{
color: #1C4F00;
font-family: "Helvetica Neue", "Lucida Grande", "Segoe UI", Arial, Helvetica, Verdana, sans-serif;
}
</style>
<title>LLF Lab || Login Page</title>
</head>
<body>
<div id="login">
<h4>LLF Lab Login</h4>
<form action="login.php" method="post">
<span class="text">Username:</span><br />
<input type="text" name="username"/><br />
<br />
<span class="text">Password:</span><br />
<input type="password" name="password"/>
<br />
<br />
<input type="checkbox" name="rememberme"/><span class="text">Remember me</span>
<br />
<br />
<input type="submit" value="Login" />
</form>
</div>
</body>
</html>
<?php
}//endif ?>
最佳答案
您在将 HTML 输出到浏览器后使用 header() 。移动
<Doctype HTML>
<html>
<head>
PHP 代码下方。
关于php - 使用 PHP 的登录页面出现问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11300705/