我有login.php页面供用户登录其凭据。用户登录后，即显示doLogin.php页面。换句话说，将显示他们的用户个人资料。在“用户个人资料”元素上，有一个编辑按钮，可以将他们引导到editProfile.php页面以编辑他们的个人信息。但是，当我单击选项卡上的后退箭头以转到用户个人资料页面时，显示错误“确认表单重新提交”。如何解决此问题，以便当用户希望返回“用户配置文件”页面时，将显示其详细信息？
这是我的doLogin.php
session_start();
$msg = "";
//check whether session variable 'user_id' is set
//in other words, check whether the user is already logged in
if (isset($_SESSION['user_id'])) {
$msg = "You are already logged in.<br/><a href='index.php'>Home</a>";
$msg = "<a href ='logout.php'>logout</a>";
} else { //user is not logged in
//check whether form input 'username' contains value
if (isset($_POST['username'])) {
//retrieve form data
$entered_username = $_POST['username'];
$entered_password = $_POST['password'];
//connect to database
include ("dbfunctions.php");
//match the username and password entered with database record
$query = "SELECT *from role,user
WHERE user_name='$entered_username' AND
PASSWORD = SHA1('$entered_password') AND user.role_id = role.role_id";
$result = mysqli_query($link, $query) or die(mysqli_error($link));
$query2 = "SELECT * FROM user,country where user.country_id=country.country_id ORDER BY `user`.`id` ASC ";
$result2 = mysqli_query($link, $query2) or die(mysqli_error($link));
$query3 = "SELECT * FROM book";
$result3 = mysqli_query($link, $query3) or die(mysqli_error($link));
if (mysqli_num_rows($result) == 1) {
$update = "UPDATE `user` SET last_login = NOW() WHERE user_name='$entered_username' ";
$resultupdate = mysqli_query($link, $update);
$row = mysqli_fetch_array($result);
$_SESSION['user_id'] = $row['id'];
$_SESSION['username'] = $row['user_name'];
$_SESSION['email'] = $row['email_address'];
$_SESSION['gender'] = $row['gender_id'];
$_SESSION['role_id'] = $row['role_type'];
$_SESSION['lastlog'] = $row['last_login'];
$msg1 = $_SESSION['username'];
$msg2 = "<b>Gender: </b> " . $_SESSION['gender'] . "<br/>";
$msg3 = "<b>Email: </b>" . $_SESSION['email'] . "<br/>";
$msg4 = "<b>Your last visit on this site: </b>" . $_SESSION['lastlog'];
$msg .= "You are logged in as " . $_SESSION['role_id'] . "<br/>";
$rowz = mysqli_fetch_array($result3);
} else { //record not found
$msg = "<p>Sorry, you must enter a valid username and password to log in.<a href='login.php'>Back</a></p>";
}
}
这是我的editProfile.php
// include a php file that contains the common database connection codes
include ("dbfunctions.php");
session_start();
$userID = $_POST['userID'];
$queryedit = "SELECT * FROM user WHERE id=$userID";
// execute the query
$resultedit = mysqli_query($link, $queryedit) or die(mysqli_error($link));
// fetch the execution result to an array
$rowedit = mysqli_fetch_array($resultedit);
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link href="style.css" rel="stylesheet" type="text/css"/>
<link rel="stylesheet" type="text/css" href="bootstrap/css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="font-awesome/css/font-awesome.min.css" />
<script src="script.js"></script>
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="bootstrap/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="styles.css">
<title>Edit Profile & Settings</title>
</head>
<body>
<div class="container">
<a href="logout.php" class="btn btn-info" role="button">Sign Out</a>
<div class="page-header">
<h1>OBC <small>onlinebookclub</small></h1>
<div class="row">
<div class="col-lg-6">
<form method="post" action="doSearch.php">
<div class="input-group">
<span class="input-group-btn">
<button class="btn btn-default" type="submit">Go!</button>
</span>
<input type="text" class="form-control" placeholder="Title/Author/YearOfPublish">
</form>
</div><!-- /input-group -->
</div><!-- /.col-lg-6 -->
</div><!-- /.row -->
</div>
</div>
<!-- Registration Form - START -->
<div class="container" id="container1">
<div id='cssmenu'>
<ul>
<li class='active'><a href='#'>Profile</a></li>
<li><a href='addbook.php'>Add/Edit Books</a></li>
<li><a href='#'>Add/Edit Authors</a></li>
<li><a href='editProfile.php'>Edit Profile & Settings</a></li>
</ul>
</div>
<h2>Edit Profile</h2>
<hr>
<div class="row">
<!-- left column -->
<div class="col-md-3">
<div class="text-center">
<img src="//placehold.it/100" class="avatar img-circle" alt="avatar">
<h6>Upload a different photo...</h6>
<input type="file" class="form-control">
</div>
</div>
<!-- edit form column -->
<div class="col-md-9 personal-info">
<h3>Personal info</h3>
<form class="form-horizontal" role="form">
<div class="form-group">
<label class="col-lg-3 control-label">Username:</label>
<div class="col-lg-8">
<input class="form-control" type="text" value="<?php echo $rowedit['user_name'] ?>">
</div>
</div>
<div class="form-group">
<label class="col-lg-3 control-label">Email:</label>
<div class="col-lg-8">
<input class="form-control" type="text" value="<?php echo $rowedit['email_address'] ?>">
</div>
</div>
<div class="form-group">
<label class="col-md-3 control-label"></label>
<div class="col-md-8">
<input type="hidden" name="id" value="<?php echo $rowedit['id'] ?>" />
<input type="submit" class="btn btn-primary" value="Save Changes">
<span></span>
<input type="reset" class="btn btn-default" value="Cancel">
</div>
</div>
</form>
</div>
</div>
</div>
<style>
#container1 {
background-color: #e2dada;
opacity: 0.9;
border-radius: 2em;
}
.centered-form {
margin-top: -185px;
margin-bottom: 120px;
}
.centered-form .panel {
background: rgba(255, 255, 255, 0.8);
box-shadow: rgba(0, 0, 0, 0.3) 20px 20px 20px;
}
h2{
color: orange;
}
</style>
</body>
答案 0 :(得分：0)
第一种方式
处理此类错误的一种方法是将页面重定向到自身。
即，当用户登录并显示doLogin页面时，即用户个人资料页面，请使用header()功能
header('Location:doLogin.php');
第二种方式
您可以使用AJAX或其他内容
jQuery重定向