php - 注册页面上的 PHP 错误:注意:未定义索引:第 27 行 C:\xampp\htdocs\Marcus\signup.php 中的注册
问题描述
您好,我已经设置了我的注册页面,但我收到了这个错误Notice: Undefined index: signup in C:\xampp\htdocs\Marcus\signup.php on line 27
错误来自我的 HTML,因为它使用 $_GET 来查看 URL 并查看它们是否是表单输入错误并显示错误消息,错误消息和成功消息仅在您单击注册按钮并进入不同的 HTML 时才起作用,错误就会显示出来,但是一旦其中一个错误为真,它就会消失。任何帮助都会很棒!
我的注册页面的 HTML
require "header.php";
?>
<main>
<h1 class="signup_text2">Signup</h1>
<link rel="stylesheet" type="text/css" href="style.css">
<?php
if (isset($_GET['error'])) {
if ($_GET['error'] == "emptyfields") {
echo '<p class="error1"> Fill in all feilds!!</p>';
}elseif ($_GET['error'] == "invaildmailuid") {
echo '<p class="error2"> Invalid Username And Email! </p>';
}elseif ($_GET['error'] == "invaliduid") {
echo '<p class="error3"> Invalid Username </p>';
}elseif ($_GET['error'] == "invalidmail") {
echo '<p class="error4"> Invalid E-mail! </p>';
}elseif ($_GET['error'] == "passswordcheck") {
echo '<p class="error5"> Your Passwords do not match! </p>';
}elseif ($_GET['error'] == "usertaken") {
echo '<p class="error6"> Username is already taken! </p>';
}
}elseif ($_GET['signup'] == "success") {
echo '<p class="success1"> Signup Successful!</p>';
}
?>
<form action="includes/signup.inc.php" method="post">
<input class="signup-Username" type="text" name="uid" placeholder="Username">
<input class="signup-Email" type="text" name="mail" placeholder="E-mail">
<input class="signup-Password" type="password" name="pwd" placeholder="Password">
<input class="signup-Password2" type="password" name="pwd-repeat" placeholder="Repeat Password">
<button class="signup_btn" type="sumbit" name="signup-submit">Signup</button>
</form>
</main>
PHP 注册码
<?php
if (isset($_POST['signup-submit'])) {
require 'dbh.inc.php';
$username = $_POST['uid'];
$email = $_POST['mail'];
$password = $_POST['pwd'];
$passwordRepeat = $_POST['pwd-repeat'];
if (empty($username) || empty($email) || empty($password) || empty($passwordRepeat)) {
header("Location: ../signup.php?error=emptyfields&uid=".$username."&mail=".$email);
exit();
}elseif (!filter_var($email, FILTER_VALIDATE_EMAIL) && !preg_match("/^[a-zA-Z0-9]*$/", $username)) {
header("Location: ../signup.php?error=invaildmailuid");
exit();
}elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
header("Location: ../signup.php?error=invaildmail&uid=".$username);
exit();
}elseif (!preg_match("/^[a-zA-Z0-9]*$/", $username)) {
header("Location: ../signup.php?error=invailduid&mail=".$email);
exit();
}elseif ($password !== $passwordRepeat) {
header("Location: ../signup.php?error=passwordcheck&uid=".$username."&mail=".$email);
exit();
}else{
$sql = "SELECT uidUsers FROM users WHERE uidUsers=?";
$stmt = mysqli_stmt_init($conn);
if (!mysqli_stmt_prepare($stmt, $sql)) {
header("Location: ../signup.php?error=sqlerror1");
exit();
} else {
mysqli_stmt_bind_param($stmt, "s", $username);
mysqli_stmt_execute($stmt);
mysqli_stmt_store_result($stmt);
$resultCheck = mysqli_stmt_num_rows($stmt);
if ($resultCheck > 0) {
header("Location: ../signup.php?error=usertaken&mail=".$email);
exit();
} else {
$sql = "INSERT INTO users (uidUsers, emailUsers, pwdUsers) VALUES (?, ?, ?)";
$stmt = mysqli_stmt_init($conn);
if (!mysqli_stmt_prepare($stmt, $sql)) {
header("Location: ../signup.php?error=sqlerror");
exit();
} else {
$hashedPwd = password_hash($password, PASSWORD_DEFAULT);
mysqli_stmt_bind_param($stmt, "sss", $username, $email, $hashedPwd);
mysqli_stmt_execute($stmt);
header("Location: ../signup.php?signup=success");
exit();
}
}
}
}
mysqli_stmt_close($stmt);
mysqli_close($conn);
}else {
header("Location: ../signup.php");
exit();
}
解决方案
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