我的网站存在很大问题。我已经建立了一个个人资料页面，允许用户修改他们的详细信息，然后提交。在提交时，应该在数据库中更新细节，但是我只是得到一个空白页面，没有任何反应。我已经花了30多个小时试图解决问题，但没有运气。它可能会被搞砸，因为现在是我的大脑。
任何帮助都会非常感激。
个人资料修改页面：
<?php
session_start();
if (!isset($_SESSION['Username'])) {
echo 'Welcome, '.$_SESSION['Username'];
} else {
echo 'Sorry, You are not logged in.';
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Index</title>
<link href="External style sheet layout.css" rel="stylesheet" type="text/css" />
<h1><?php echo date("D M d, Y G:i a"); ?>
<?php $welcome = 'Hi';
if (date("H") < 12) {
$welcome = 'Good Morning';
} else if (date('H') > 11 && date("H") < 18) {
$welcome = 'Good Afternoon';
} else if(date('H') > 17) {
$welcome = 'Good Evening';
}
echo $welcome;
?></h1>
<div class="Login">
<h3><ul>
<?php if(isset($_SESSION['authenticatedUser']) && $_SESSION['authenticatedUser'] != null ) {?>
<li><a href="Profile.php">Welcome <?php echo $_SESSION["authenticatedUser"] ?></a></li>
<li><a href="logout.php"><span>Log Out</span></a></li>
<?php } else {?> <li><a href="login.php"><span>Log In</span></a></li> <?php } ?>
<li><a href="createUser.php">Register</a></li>
<li><a href="#">Basket</a></li>
</ul></h3>
</div>
</head>
<body>
<div id="container">
<div id="header">
<img src="Images/Schurter3.jpg" width="800" height="300" alt="Schurter" />
</div>
<div id="navigation">
<ul id="navbar">
<li><a href="Index.php">Home</a></li>
<li><a href="Components.html">Components</a>
<ul>
<li><a href="Circuit protection.html">Circuit Protection</a>
<li><a href="Connectors.html">Connectors</a></li>
<li><a href="Switches.html">Switches</a></li>
<li><a href="EMC Products.html">EMC Products</a></li>
<li><a href="Other Products.html">Other Products</a></li>
</ul>
</li>
<li><a href="EMS.html">Electronic Manufacturing Services</a>
<ul>
<li><a href="Application Examples.html">Application Examples</a></li>
<li><a href="Processes.html">Processes</a></li>
</ul>
</li>
<li><a href="About.html">About</a></li>
<li><a href="Contact.php">Contact</a></li>
</ul>
</div>
<?php
include 'db.inc';
//Check to see if a customer ID has been passed in the URL
$memberID = $_GET["memberID"];
// Has a custID been provided? If so, retrieve the customer
// details for editing.
if (!empty($memberID))
{
$connection = mysql_connect($hostname, $username, $password) or die ("Unable to connect!");
// select database
mysql_select_db($databasename) or die ("Unable to select database!");
$query = "SELECT * FROM members WHERE id = " . $memberID;
//Get the recordset
$recordSet = mysql_query($query) or die ("Error in query: $query. ".mysql_error());
$row = mysql_fetch_assoc($recordSet);
//Check for errors
//if (!$recordSet)
// print $connection->ErrorMsg();
// else
// {
// Load all the form variables with customer data
$Firstname = $row['Firstname'];
$Surname = $row['Surname'];
$Emailaddress = $row['Emailaddress'];
$Username = $row['Username'];
$Password = $row['Password'];
// }//End else
}
?>
<form name="RegisterForm" action="ProfileUpdate.php" method="post" >
<input type="hidden" name="memberID" value="<?php echo $memberID;?>">
<label>First name*</label>
<input name="Firstname" placeholder="Enter first name here" value="<?php echo $Firstname;?>" required/>
<label>Surname*</label>
<input name="Surname" placeholder="Enter surname here" value="<?php echo $Surname;?>" required/>
<label>Email*</label>
<input name="Emailaddress" type="email" placeholder="Enter email here" value="<?php echo $Emailaddress;?>" required/>
<label>Username*</label>
<input name="Username" type="text" placeholder="Enter a desired username" value="<?php echo $Username;?>" required/>
<label>Password*</label>
<input name="Password" type="password" placeholder="Enter a desired password" value="<?php echo $Password;?>" required/>
<input id="submit" name="submit" type="submit" value="Update Details">
</form>
</body>
</html>
这是更新操作页面：
<?php
require('db.inc');
$memberID = $_GET["id"];
echo $memberID;
// trim the POSTed values - gets rid of unecessary whitespace
$Firstname = $_POST['Firstname'];
$Surname = $_POST['Surname'];
$Emailaddress = $_POST['Emailaddress'];
$Username = $_POST['Username'];
$Password = $_POST['Password'];
//Here we use validation at the server
// Vaildate the firstname
?>
<!DOCTYPE HTML PUBLIC
"-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd" >
<html>
<head><title>Customer Details Error</title></head>
<body bgcolor="white">
<h1>Customer Details Error</h1>
<?=$errorString?>
<br><a href="ProfileAmend.php">Return to the customer form</a>
</body>
</html>
<?php
// If we made it here, then the data is valid
$connection = mysql_connect($hostname, $username, $password) or die ("Unable to connect!");
// select database
mysql_select_db($databasename) or die ("Unable to select database!");
// this is an update
if (!empty($memberID))
{
$query = "UPDATE members SET ".
"Firstname = '$Firstname', Surname = '$Surname', " .
"Emailaddress = '$Emailaddress', Username = '$Username', Password = '$Password', " .
" WHERE id = $memberID";
$recordSet = mysql_query($query) or die ("Error in query: $query. ".mysql_error());
echo "Your updates are complete!";
}
?>
答案 0 :(得分：1)
<?php
session_start();
if (!isset($_SESSION['Username'])) {
echo 'Welcome, '.$_SESSION['Username'];
} else {
echo 'Sorry, You are not logged in.';
}
?>
修复此问题：
<?php
session_start();
if (isset($_SESSION['Username'])) {
echo 'Welcome, '.$_SESSION['Username'];
} else {
echo 'Sorry, You are not logged in.';
}
?>
第一个是错误的，如果没有用户名，它会检查用户名，然后显示用户名，否则它不会。
在-话题：
<form name="RegisterForm" action="ProfileUpdate.php" method="post" >
将以上行更改为：
<form name="RegisterForm" action="ProfileUpdate.php?id=<?php echo $memberID ?>" method="post" >
当您的profileUpdate.php请求成员ID时，这是必要的，在此之后，代码应该有效！