我是 php 和 mysql 的新手。我正在尝试创建用户注册表单，验证数据，然后重定向到登录页面，他们可以在其中输入用户名和密码进行登录。我已经编写了代码，但由于某种原因我无法正确使用 header()。到目前为止，这是我的代码：
$userErr= $passErr= $passErrc= $firstErr= $lastErr= $middle= $addErr= $cityErr= $stateErr=$zipErr= $emailErr= $phoneErr= $passMatchErr="";
$userID= $password= $pass_conf= $firstName= $lastName= $middle= $address= $city= $state= $zip= $email= $phone="";
// Validate the form
// use trim() function to remove unnecessary characters such as extra space, tab, newline,
// use stripslashes(() to remove backslashes
// use htmlspecialchars() for security
function test_input($data)
{
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
// validating the form to see all required fields are entered
if (empty($_POST["userID"]))
{
$userErr = "User ID is required";
}
else
{
$userID = test_input($_POST["userID"]);
}
if (empty($_POST["password"]))
{
$passErr = "Password is required";
}
else
{
$password = test_input($_POST["password"]);
}
if (empty($_POST["pass_conf"]))
{
$passErrc = "Confirm your password";
}
else
{
$pass_conf = test_input($_POST["pass_conf"]);
}
if (empty($_POST["firstName"]))
{
$firstErr = "First Name is required";
}
else
{
$firstName = test_input($_POST["firstName"]);
}
if (empty($_POST["lastName"]))
{
$lastErr = "Last Name is required";
}
else
{
$lastName = test_input($_POST["lastName"]);
}
if (empty($_POST["middle"]))
{
$middle = "";
}
else
{
$middle= test_input($_POST["middle"]);
}
if (empty($_POST["address"]))
{
$addErr = "Address is required";
}
else
{
$address = test_input($_POST["address"]);
}
if (empty($_POST["city"]))
{
$cityErr = "City is required";
}
else
{
$city = test_input($_POST["city"]);
}
if (empty($_POST["state"]))
{
$stateErr = "State is required";
}
else
{
$state = test_input($_POST["state"]);
}
if (empty($_POST["zip"]))
{
$zipErr = "Zip is required";
}
else
{
$zip = test_input($_POST["zip"]);
}
if (empty($_POST["email"]))
{
$emailErr = "Email is required";
}
else
{
$email = test_input($_POST["email"]);
}
if (empty($_POST["phone"]))
{
$phoneErr = "";
}
else
{
$phone = test_input($_POST["phone"]);
}
}
else
{
if($password != $pass_conf){
$passMathErr= "Passwords do not match. Please, go back and re-enter the passwords!";
// die($passMathErr);
} else{
// perform sql query to insert the data
$sql="insert into users values('$userID', '$password', '$firstName', '$lastName', '$middle', '$address', '$city', '$state', '$zip', '$email', '$phone')";
$result=mysql_query($sql, $connection);
header("Location:login.html");
}
}
?>
<html lang="em">
<head>
<title> Registration </title>
<style type="text/css">
h1{
text-align: left;
font-weight:bold;
font-size: 2em;
color:#FFFF99;
word-spacing: 0.3em;
letter-spacing:0.1em;
text-decoration:underline;
}
body{
background-color: #421818;
}
.txtinput{
margin-left:150px;
}
table{
font-color:#99FF00;
}
.error {
color: #FF0000;
}
</style>
</head>
<body>
<h1> Registration Form </h1><br>
<form name="reg" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" method="post">
<table style="color:#99FF00" border=0 cellspacing=0 cellpadding=2>
<tr>
<td>User ID * <td><input type="text" name="userID"/>
<span class="error"><?php echo $userErr;?></span>
</tr>
<tr>
<td>Password *<td><input type="password" name="password" />
<span class="error"><?php echo $passErr;?></span>
</tr>
<tr>
<td>Confirm Password *<td><input type="password" name="pass_conf" />
<span class="error"><?php echo $passErrc;?></span>
</tr>
<tr>
<td>First Name *<td><input type="text" name="firstName" />
<span class="error"><?php echo $firstErr;?></span>
</tr>
<tr>
<td>Last Name *<td><input type="text" name="lastName" />
<span class="error"><?php echo $lastErr;?></span>
</tr>
<tr>
<td>Middle<td><input type="text" name="middle" />
<span class="error"><?php echo $middle;?></span>
</tr>
<tr>
<td>Address *<td><input type="text" name="address" />
<span class="error"><?php echo $addErr;?></span>
</tr>
<tr>
<td>City *<td><input type="text" name="city" />
<span class="error"><?php echo $cityErr;?></span>
</tr>
<tr>
<td>State *<td><input type="text" name="state" />
<span class="error"><?php echo $cityErr;?></span>
</tr>
<tr>
<td>Zip *<td><input type="text" name="zip" />
<span class="error"><?php echo $zipErr;?></span>
</tr>
<tr>
<td>Email *<td><input type="text" name="email"/>
<span class="error"><?php echo $emailErr;?></span>
</tr>
<tr>
<td>Phone<td><input type="text" name="phone" />
<span class="error"><?php echo $phone;?></span>
</tr>
</table>
<div class="txtinput">
<input type="submit" name="submit" value="Register"/>
</div>
</form>
</body>
</html>