我目前正在编写一个预成型基本用户注册的脚本。
当用户到达登录页时，我有一个JS脚本，可以从URL中识别他们的电子邮件，并将其填充在电子邮件输入框中(已禁用(。之后，用户只需输入密码即可创建帐户。然而，PHP抛出错误"Email is required"，即使它是由JS脚本填充的。
我曾尝试将输入框的状态从禁用更改为启用，但这并没有多大帮助。我在下面附上了过程中涉及的文件。如有任何帮助，我们将不胜感激。
fillEmail.js
$(document).ready(function() {
var link = window.location.href;
var emailIndex = link.indexOf("email");
if(emailIndex != -1) {
link = link.substring(emailIndex + 6);
} else {
link = "";
}
document.getElementById("email").value = link;
//$('#email').attr('disabled', 'disabled');});
register.php
<?php include('server.php') ?>
<!DOCTYPE html>
<html>
<head>
<title>Register</title>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<div class="header">
<h2>Register</h2>
</div>
<form method="post" action="register.php">
<?php include('errors.php'); ?>
<div hidden class="input-group">
<label>Username</label>
<input type="text" name="username" value="user">
</div>
<div class="input-group">
<label>Email</label>
<input type="email" name="email" id="email" value="<?php echo $email; ?>" disabled>
</div>
<div class="input-group">
<label>Password</label>
<input type="password" name="password_1">
</div>
<div class="input-group">
<label>Confirm password</label>
<input type="password" name="password_2">
</div>
<div class="input-group">
<button type="submit" class="btn" name="reg_user">Register</button>
</div>
</form>
</body>
<script
src="https://code.jquery.com/jquery-3.4.1.js"
integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
crossorigin="anonymous">
</script>
<script type='text/javascript' src="fillEmail.js"></script>
</html>
server.php
<?php
session_start();
// initializing variables
$username = "";
$email = "";
$errors = array();
// connect to the database
$db = mysqli_connect('localhost', 'root', '', 'registration');
// REGISTER USER
if (isset($_POST['reg_user'])) {
// receive all input values from the form
$username = mysqli_real_escape_string($db, $_POST['username']);
$email = mysqli_real_escape_string($db, $_POST['email']);
$password_1 = mysqli_real_escape_string($db, $_POST['password_1']);
$password_2 = mysqli_real_escape_string($db, $_POST['password_2']);
// form validation: ensure that the form is correctly filled ...
// by adding (array_push()) corresponding error unto $errors array
if (empty($username)) { array_push($errors, "Username is required"); }
if (empty($email)) { array_push($errors, "Email is required"); }
if (empty($password_1)) { array_push($errors, "Password is required"); }
if ($password_1 != $password_2) {
array_push($errors, "The two passwords do not match");
}
// first check the database to make sure
// a user does not already exist with the same username and/or email
$user_check_query = "SELECT * FROM users WHERE username='$username' OR email='$email' LIMIT 1";
$result = mysqli_query($db, $user_check_query);
$user = mysqli_fetch_assoc($result);
if ($user) { // if user exists
if ($user['username'] === $username) {
array_push($errors, "Username already exists");
}
if ($user['email'] === $email) {
array_push($errors, "email already exists");
}
}
// Finally, register user if there are no errors in the form
if (count($errors) == 0) {
$password = md5($password_1);//encrypt the password before saving in the database
$query = "INSERT INTO users (username, email, password)
VALUES('$username', '$email', '$password')";
mysqli_query($db, $query);
$_SESSION['username'] = $username;
$_SESSION['success'] = "You are now logged in";
header('location: index.php');
}
}
?>
我是PHP的新手，所以任何帮助都将不胜感激。提前感谢！
根据我的评论，您可以简单地使用readonly而不是disabled来实现类似的效果。此外，请使用准备好的语句来防止SQL注入。mysqli_real_escape_string不够
为了提交值，字段不能为disabled。
简单的解决方案，创建另一个字段作为(隐藏(，这些是提交
<input type="email" id="email" value="<?php echo $email; ?>" disabled>
<input type="hidden" name="email" value="<?php echo $email; ?>">
或者您可以简单地将属性从disables更改为readonly