我的代码需要一些帮助。它可以在我的计算机上的 XAMPP 上运行，但是当它在我的服务器上运行时，它将无法运行，我得到的只是一个空白屏幕。你可以看看在<a href="http://www.redhotessentials.com/prototype/pages/login.php</a>put username allanallan password allanallan 会发生什么，你可以看看会发生什么谢谢
<?php
if (isset($_POST['email'])) {
//Connect to the database through our include
require("db.php");
$email = stripslashes($_POST['email']);
$email = strip_tags($email);
$email = mysql_real_escape_string($email);
$password = preg_replace("[^A-Za-z0-9]", "", $_POST['password']); // filter everything but numbers and letters
$password = md5($password);
// Make query and then register all database data that -
// cannot be changed by member into SESSION variables.
// Data that you want member to be able to change -
// should never be set into a SESSION variable.
$sql = mysql_query("SELECT * FROM members WHERE email='$email' AND password='$password' AND emailactivated='1'");
$login_check = mysql_num_rows($sql);
if($login_check>0){
while($row = mysql_fetch_array($sql)){
// Get member ID into a session variable
$id = $row['id'];
session_register('id');
$_SESSION['id'] = $id;
// Get member username into a session variable
$username = $row['username'];
session_register('username');
$_SESSION['username'] = $username;
// Update last_log_date field for this member now
mysql_query("UPDATE members SET lastlogin=now() WHERE id='$id'");
// Print success message here if all went well then exit the script
header("location: endlessnails_blog.php");
exit();
} // close while
} else {
// Print login failure message to the user and link them back to your login page
print '<br /><br /><font color="#FF0000">No match in our records, try again </font><br />
<br /><a href="index.php">Click here</a> to go back to the login page.';
exit();
}
}// close if post
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Login to your profile</title>
<link rel="stylesheet" type="text/css" href="../../css/main4.css" />
<script type="text/javascript">
<!-- Form Validation -->
function validate_form ( ) {
valid = true;
if ( document.logform.email.value == "" ) {
alert ( "Please enter your User Name" );
valid = false;
}
if ( document.logform.pass.value == "" ) {
alert ( "Please enter your password" );
valid = false;
}
return valid;
}
<!-- Form Validation -->
</script>
</head>
<?php include("header.php"); ?>
<?php include("nav.php"); ?>
<body>
<div id="container">
<div id="box3">
<div align="center">
<h3 id="login2"><br />
<br />
Log into Endless Nails Blog<br />
<br />
</h3>
</div>
<div id="loginformmove">
<table class="style7" align="center" cellpadding="5">
<form action="index.php" method="post" enctype="multipart/form-data" name="logform"
id="logform" onsubmit="return validate_form ( );">
<tr>
<td class="style7"><div align="right">Email Address:</div></td>
<td class="style7"><input name="email" type="text" id="email" size="30" maxlength="64" /></td>
</tr>
<tr>
<td class="style7"><div align="right">Password:</div></td>
<td class="style7"><input name="password" type="password" id="password" size="30" maxlength="24" /></td>
</tr>
<tr>
<td class="style7"> </td>
<td id="login3"><input name="Submit" type="submit" value="Login" class="login_pad" /></td>
</tr>
</form>
</table>
</div>
</div>
</div>
</div>
</body>
</html>