我在教程的帮助下编写了验证码。代码对我来说是正确的，并且表单上的提交按钮使用“POST”方法链接到右侧页面。但是，在提交注册信息时，浏览器会打开后端页面，显示脚本的某些部分。显然，它并不意味着这样做，而是访问所述页面进行验证并链接回注册页面，并在网址中嵌入成功消息。
这是包含表单的signup.php页面：
<!DOCTYPE html>
<html>
<head>
<title>Signup</title>
<link rel="stylesheet" type="text/css" href="signupstyle.css">
</head>
<body>
<div class="signup-wrapper">
<h3>Sign Up</h3>
<form class="signup-form" action="functions/signup.func.php" method="POST">
<ul>
<li>
<input type="text" name="fname" placeholder="First Name">
</li>
<li>
<input type="text" name="lname" placeholder="Last Name">
</li>
<li>
<input type="text" name="username" placeholder="Username">
</li>
<li>
<input type="email" name="email" placeholder="Email">
</li>
<li>
<input type="password" name="password" placeholder="Password">
</li>
<li>
<button>Sign Up</button>
</li>
</ul>
</form>
</div>
<footer>
</footer>
</body>
</html>
要发布到的页面是后端，以下是代码：
<? php
if (isset($POST['submit'])) { //ensure that the submit button was pressed to
access the page.
include_once 'dbc.func.php';
$fname = mysqli_real_escape_string($conn, $_POST['fname']);
$lname = mysqli_real_escape_string($conn, $_POST['lname']);
$username = mysqli_real_escape_string($conn, $_POST['username']);
$email = mysqli_real_escape_string($conn, $_POST['email']);
$password = mysqli_real_escape_string($conn, $_POST['password']);
//HANDLING ERRORS
//Checking for empty fields
if (empty($fname) || empty($lname) || empty($username) || empty($email) || ($password)) {
header("Location: .../signup.php?signupfields=empty"); //if any of the above are empty, redirect to signup page.
exit();
}else{
//Checking for invalid input characters
if (!preg_match("/^[a-zA-Z]*$/", $fname) || (!preg_match("/^[a-zA-Z]*$/", $lname)) {
header("Location: .../signup.php?signupfields=invalidchars"); //if any of the above are empty, redirect to signup page.
exit();
}else{
//Checking the email validity
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
header("Location: .../signup.php?signupfields=invalidemail"); //if any of the above are empty, redirect to signup page.
exit();
}else{
//Checking for username similarity
$sql = "SELECT * FROM users WHERE username = '$username'";
$resulter = mysqli_query($conn, $sql);
$checkResulter = mysqli_num_rows($resulter);
if ($checkResulter > 0) {
header("Location: .../signup.php?signupfields=usernametaken"); //if any of the above are empty, redirect to signup page.
exit();
}else{
//Hashing the inputted password
$hashedPassword = password_hash($password, PASSWORD_DEFAULT);
//Inserting the inputted user details into the database
$inputer = "INSERT INTO users (fname, lname, username, email, password) VALUES ('$fname', '$lname', '$username', '$email', '$hashedPassword');";
mysqli_query($conn,$inputer);
header("Location: .../signup.php?signupsuccess"); //redirect to signup page.
exit();
}
}
}
}
}else{
header("Location: ../signup.php?badlogin"); //redirect users to the
signup.php page.
exit();
}
看起来一切都井然有序，但它会抛出signup.func.php页面，页面上显示以下代码：
0) { header("Location: .../signup.php?signupfields=usernametaken"); //if any of the above are empty, redirect to signup page. exit(); }else{ //Hashing the inputted password $hashedPassword = password_hash($password, PASSWORD_DEFAULT); //Inserting the inputted user details into the database $inputer = "INSERT INTO users (fname, lname, username, email, password) VALUES ('$fname', '$lname', '$username', '$email', '$hashedPassword');"; mysqli_query($conn,$inputer); header("Location: .../signup.php?signupsuccess"); //redirect to signup page. exit(); } } } } }else{ header("Location: ../signup.php?badlogin"); //redirect users to the signup.php page. exit(); }
不出所料，它并不意味着这样做，而且我在代码中没有发现任何错误而感到疲惫。谁能帮我吗？
编辑：
在阅读提供的文章后，我使用了错误处理程序
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
当我再次运行代码时，它给了我这个：
警告：mysqli_connect（）：php_network_getaddresses：getaddrinfo失败：没有这样的主机。在第10行的C：\ xampp \ htdocs \ Rizeapp \ functions \ dbc.func.php
致命错误：未捕获mysqli_sql_exception：php_network_getaddresses：getaddrinfo失败：没有这样的主机。在C：\ xampp \ htdocs \ Rizeapp \ functions \ dbc.func.php：10堆栈跟踪：＃0 C：\ xampp \ htdocs \ Rizeapp \ functions \ dbc.func.php（10）：mysqli_connect（'localhost，root ...'）＃1 C：\ xampp \ htdocs \ Rizeapp \ functions \ signup.func.php（4）：include_once（'C：\ xampp \ htdocs ...'）＃2 {main}抛出C：第10行\ xampp \ htdocs \ Rizeapp \ functions \ dbc.func.php
如果这是我认为的意思，那就是XAMPP服务器的详细信息不正确。我将研究修复它，看看代码是否会运行。
编辑2：当它奏效时，我真的大声欢呼。在上面编辑1中引发的第二个错误是由于我所知道的最愚蠢的错误：我这样做了：
$conn = mysqli_connect("$dbServername, $dbUsername, $dbPassword,
$dbName");
而不是：
$conn = mysqli_connect("$dbServername", "$dbUsername", "$dbPassword",
"$dbName");
谢谢大家的快速回复，最终解决了这个问题。现在，我可以继续全力以赴。欢呼声。
答案 0 :(得分：0)
发现问题：
<? php。然后，php文件将代码呈现为文本文件。正确：<?php。!preg_match...语句中的第二个if之前是一个错误的字符(。正确：被删除。//或/* ... */之外编写注释行时，会出现错误。$POST['submit']。 HTTP POST方法的正确全局变量名为$_POST。因此，正确的代码是：$_POST['submit']。<button>Sign Up</button>，则必须为其命名（例如<button name="submit">Sign Up</button>），以便能够通过if (isset($_POST['submit'])) {...}引用它。.../abc/xyz.php。正确：../abc/xyz.php。if (... || empty($email) || ($password)) {...}。正确：if (... || empty($email) || empty($password)) {...}。<强>建议：
signup.php中，而不是signup.func.php中，并相应地更改它。表单的操作属性将为signup.php，或 HTML5 的""，然后。通过这种方式，您可以直接（例如现场）向用户显示任何消息，并且在注册处理成功时最终仅执行单个重定向（例如，到login.php页面）。替代代码（面向对象的mysqli），如承诺
它包括我的上述建议。按原样运行它来测试它。但首先更改表结构（请参阅下面的标题使用的表结构），更改 connection.php 中的数据库凭据（请参阅标题 includes / connection.php 下面）并创建一个文件系统结构，如下面代码部分的标题所示。
要从生产环境（当屏幕上未显示错误时）切换到开发环境（当屏幕上显示所有引发的错误时），只需更改从'prod'到'dev'的常量 APP_ENV （在 handlers.php 中）的值（参见标题 includes / handlers.php ）。然后，为了测试它，例如，将表名“users”重命名为另一个错误的名称。或者将两个sql语句中的第一个设置为NULL：$sql = NULL;。
<?php
require 'includes/handlers.php';
require 'includes/connection.php';
// Signalize if a new account could be created, or not.
$accountCreated = FALSE;
/*
* ====================================
* Operations upon form submission.
* ====================================
*/
if (isset($_POST['submit'])) {
/*
* ====================================
* Read the posted values.
* ====================================
*/
$firstName = isset($_POST['firstName']) ? $_POST['firstName'] : '';
$lastName = isset($_POST['lastName']) ? $_POST['lastName'] : '';
$email = isset($_POST['email']) ? $_POST['email'] : '';
$username = isset($_POST['username']) ? $_POST['username'] : '';
$password = isset($_POST['password']) ? $_POST['password'] : '';
/*
* ====================================
* Validate all posted values together.
* ====================================
*/
if (empty($firstName) && empty($lastName) && empty($email) && empty($username) && empty($password)) {
$errors[] = 'All values are mandatory. Please provide them.';
}
/*
* ====================================
* Validate each value separately.
* ====================================
*/
if (!isset($errors)) {
// Validate the first name.
if (empty($firstName)) {
$errors[] = 'Please provide a first name.';
} elseif (!preg_match('/^[a-zA-Z]*$/', $firstName)) {
$errors[] = 'The first name contains invalid characters.';
} /* Other validations here using elseif statements */
// Validate the last name.
if (empty($lastName)) {
$errors[] = 'Please provide a last name.';
} elseif (!preg_match('/^[a-zA-Z]*$/', $lastName)) {
$errors[] = 'The last name contains invalid characters.';
} /* Other validations here using elseif statements */
// Validate the email.
if (empty($email)) {
$errors[] = 'Please provide an email address.';
} elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$errors[] = 'The email address is not in a valid format.';
} /* Other validations here using elseif statements */
// Validate the username.
if (empty($username)) {
$errors[] = 'Please provide a username.';
} /* Other validations here using elseif statements */
// Validate the password.
if (empty($password)) {
$errors[] = 'Please provide a password.';
} /* Other validations here using elseif statements */
}
/*
* ====================================
* Check if user exists. Save if not.
* ====================================
*/
if (!isset($errors)) {
/*
* ====================================
* Check if user already exists.
* ====================================
*/
/*
* The SQL statement to be prepared. Notice the so-called markers,
* e.g. the "?" signs. They will be replaced later with the
* corresponding values when using mysqli_stmt::bind_param.
*
* @link http://php.net/manual/en/mysqli.prepare.php
*/
$sql = 'SELECT COUNT(*)
FROM users
WHERE username = ?';
/*
* Prepare the SQL statement for execution - ONLY ONCE.
*
* @link http://php.net/manual/en/mysqli.prepare.php
*/
$statement = $connection->prepare($sql);
/*
* Bind variables for the parameter markers (?) in the
* SQL statement that was passed to prepare(). The first
* argument of bind_param() is a string that contains one
* or more characters which specify the types for the
* corresponding bind variables.
*
* @link http://php.net/manual/en/mysqli-stmt.bind-param.php
*/
$statement->bind_param('s', $username);
/*
* Execute the prepared SQL statement.
* When executed any parameter markers which exist will
* automatically be replaced with the appropriate data.
*
* @link http://php.net/manual/en/mysqli-stmt.execute.php
*/
$statement->execute();
/*
* Transfer the result set resulted from executing the prepared statement.
* E.g. store, e.g. buffer the result set into the (same) prepared statement.
*
* @link http://php.net/manual/en/mysqli-stmt.store-result.php
* @link https://stackoverflow.com/questions/8321096/call-to-undefined-method-mysqli-stmtget-result
*/
$statement->store_result();
/*
* Bind the result set columns to corresponding variables.
* E.g. these variables will hold the column values after fetching.
*
* @link http://php.net/manual/en/mysqli-stmt.bind-result.php
*/
$statement->bind_result($numberOfFoundUsers);
/*
* Fetch the results from the result set (of the prepared statement) into the bound variables.
*
* @link http://php.net/manual/en/mysqli-stmt.fetch.php
*/
$statement->fetch();
/*
* Free the stored result memory associated with the statement,
* which was allocated by mysqli_stmt::store_result.
*
* @link http://php.net/manual/en/mysqli-result.free.php
*/
$statement->free_result();
/*
* Close the prepared statement. It also deallocates the statement handle.
* If the statement has pending or unread results, it cancels them
* so that the next query can be executed.
*
* @link http://php.net/manual/en/mysqli-stmt.close.php
*/
$statement->close();
if ($numberOfFoundUsers > 0) {
$errors[] = 'The given username already exists. Please choose another one.';
} else {
/*
* ====================================
* Save a new user account.
* ====================================
*/
// Create a password hash.
$passwordHash = password_hash($password, PASSWORD_BCRYPT);
$sql = 'INSERT INTO users (
first_name,
last_name,
email,
username,
password
) VALUES (
?, ?, ?, ?, ?
)';
$statement = $connection->prepare($sql);
$statement->bind_param('sssss', $firstName, $lastName, $email, $username, $passwordHash);
$statement->execute();
// Signalize that a new account was successfully created.
$accountCreated = TRUE;
// Reset all values so that they are not shown in the form anymore.
$firstName = $lastName = $email = $username = $password = NULL;
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=yes" />
<meta charset="UTF-8" />
<!-- The above 3 meta tags must come first in the head -->
<title>Demo - Sign Up </title>
<!--<link href="assets/images/favicon.ico" rel="icon" type="image/png" />-->
<!-- CSS assets -->
<link href="https://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700,800" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Roboto+Condensed:300,400,700" rel="stylesheet">
<link href="assets/css/app.css" type="text/css" rel="stylesheet">
<link href="assets/css/signup.css" type="text/css" rel="stylesheet">
<!-- JS assets -->
<script src="https://code.jquery.com/jquery-3.2.1.min.js" type="text/javascript"></script>
</head>
<body>
<div class="page-container">
<nav class="navbar">
<ul class="navbar-nav">
<li>
<a href="#">Home</a>
</li>
<li>
<a href="#">About Us</a>
</li>
<li>
<a href="#">Login</a>
</li>
<li>
<a href="signup.php" class="active">Sign Up</a>
</li>
</ul>
</nav>
<header class="page-header">
<h2 class="page-title">
Sign Up
</h2>
<div class="page-subtitle">
Hello. We are happy to see you here. Please fill in the form to register.
</div>
</header>
<section class="page-content">
<section class="form-container-outer">
<section class="form-container-inner">
<?php
if (isset($errors)) {
?>
<div class="messages danger">
<?php echo implode('<br/>', $errors); ?>
</div>
<?php
} elseif ($accountCreated) {
?>
<div class="messages success">
You have successfully created your account.
<br/>Would you like to <a href="#">login</a> now?
</div>
<?php
}
?>
<form id="signup-form" action="" method="post">
<div class="form-group">
<label for="firstName">First Name <span class="mandatory">*</span></label>
<input type="text" id="firstName" name="firstName" value="<?php echo isset($firstName) ? $firstName : ''; ?>" placeholder="First Name" required>
</div>
<div class="form-group">
<label for="lastName">Last Name <span class="mandatory">*</span></label>
<input type="text" id="lastName" name="lastName" value="<?php echo isset($lastName) ? $lastName : ''; ?>" placeholder="Last Name" required>
</div>
<div class="form-group">
<label for="email">Email <span class="mandatory">*</span></label>
<input type="email" id="email" name="email" value="<?php echo isset($email) ? $email : ''; ?>" placeholder="Email" required>
</div>
<div class="form-group">
<label for="username">Username <span class="mandatory">*</span></label>
<input type="text" id="username" name="username" value="<?php echo isset($username) ? $username : ''; ?>" placeholder="Username" required>
</div>
<div class="form-group">
<label for="password">Password <span class="mandatory">*</span></label>
<input type="password" id="password" name="password" value="<?php echo isset($password) ? $password : ''; ?>" placeholder="Password" required>
</div>
<button type="submit" id="signupButton" name="submit" value="signup">
Create account
</button>
</form>
</section>
</section>
</section>
<footer class="footer">
© <?php echo date('Y'); ?> <a href="#" title="Demo">Demo</a>. All rights reserved.
</footer>
</div>
</body>
</html>
<?php
/*
* This page contains the code for creating a mysqli connection instance.
*/
// Db configs.
define('HOST', 'localhost');
define('PORT', 3306);
define('DATABASE', 'tests');
define('USERNAME', 'root');
define('PASSWORD', 'root');
/*
* Enable internal report functions. This enables the exception handling,
* e.g. mysqli will not throw PHP warnings anymore, but mysqli exceptions
* (mysqli_sql_exception).
*
* MYSQLI_REPORT_ERROR: Report errors from mysqli function calls.
* MYSQLI_REPORT_STRICT: Throw a mysqli_sql_exception for errors instead of warnings.
*
* @link http://php.net/manual/en/class.mysqli-driver.php
* @link http://php.net/manual/en/mysqli-driver.report-mode.php
* @link http://php.net/manual/en/mysqli.constants.php
*/
$mysqliDriver = new mysqli_driver();
$mysqliDriver->report_mode = (MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
/*
* Create a new db connection.
*
* @see http://php.net/manual/en/mysqli.construct.php
*/
$connection = new mysqli(HOST, USERNAME, PASSWORD, DATABASE, PORT);
<?php
/*
* Include this page in all PHP pages of the application.
*
* This page contains:
* - The APP_ENV constant, used to decide in which environment this application runs.
* - The functions for handling all the errors, or exceptions, raised by the application.
* - The code for setting them as error/exception handlers.
* - The code deciding if the errors should be displayed on the screen. The errors
* display MUST be activated ONLY in the development stage of the application. When
* the website goes live, ALL ERRORS must be written in a/the log file and NO ERRORS
* should be displayed on screen, but only a general, user-friendly message, or a
* custom error page.
*/
/*
* Decide in which environment this application runs. Possible values:
* - 'prod' (app in production, e.g. live). The errors are not displayed, but only logged.
* - 'dev' (app in development). The errors are displayed on screen and logged.
* - 'test' (app in tests). Same as 'dev'.
* - etc.
*/
define('APP_ENV', 'dev');
// Activate the errors/exceptions logging.
ini_set('log_errors', 1);
// Set the error reporting level: report all errors.
error_reporting(E_ALL);
// Decide how to handle the errors/exceptions.
if (APP_ENV === 'prod') { // App in production, e.g. live.
// DON'T display the errors/exceptions on the screen.
ini_set('display_errors', 0);
// Set the handler functions.
set_error_handler('errorHandler');
set_exception_handler('exceptionHandler');
} else { // App in development, tests, etc.
// Display the errors/exceptions on the screen.
ini_set('display_errors', 1);
}
/**
* Error handler:
* - Print a user-friendly message, or show a custom error page.
* - Log the error.
*
* @link http://php.net/manual/en/function.set-error-handler.php set_error_handler.
* @param int $errno
* @param string $errstr
* @param string $errfile
* @param int $errline
*/
function errorHandler($errno, $errstr, $errfile, $errline) {
echo 'An error occurred during your request. Please try again, or contact us.';
error_log('Error ' . $errno . ' - ' . $errstr . ' in file ' . $errfile . ' on line ' . $errline);
exit();
}
/**
* Exception handler:
* - Print a user-friendly message, or show a custom error page.
* - Log the error.
*
* @link http://php.net/manual/en/function.set-exception-handler.php set_exception_handler.
* @param Exception $exception
*/
function exceptionHandler($exception) {
echo 'An error occurred during your request. Please try again, or contact us.';
error_log('Exception ' . $exception->getCode() . ' - ' . $exception->getMessage() . ' in file ' . $exception->getFile() . ' on line ' . $exception->getLine());
exit();
}
/***************************************/
/* Base settings */
/***************************************/
html {
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
box-sizing: border-box;
}
*, *:before, *:after {
-moz-box-sizing: inherit;
-webkit-box-sizing: inherit;
box-sizing: inherit;
}
/* Font size: 100% = 16px (in almost all web browsers) */
html, body {
width: 100%;
height: 100%;
min-height: 100%;
margin: 0;
padding: 0;
font-size: 100%;
font-weight: 400;
line-height: 1.8;
color: #000;
font-family: "Open Sans", Verdana, Arial, sans-serif !important;
background-color: #fff;
}
/*
A font size of 1rem means 16px. E.g. 100% of the font size of the "html" tag, which is 16px.
A font size of 0.9375rem means: 0.9375 * 16px = 15px.
From this point on, for font sizes, work with "rem", or "em" units, not anymore with px.
The "rem" units are always relative to the font size of the "html" tag (here 16px, because is set as 100%).
The "em" units are always relative to the font size of the parent tag.
*/
body {
font-size: 0.9375rem;
position: relative;
}
a {
text-decoration: none;
outline: none;
color: #DF9237;
}
a:hover {
text-decoration: none;
outline: none;
color: #000;
}
h1, h2, h3, h4, h5, h6 {
margin: 0;
padding: 0;
line-height: 1;
font-weight: 300;
}
/* A font size of 2.5rem means: 2.5 * 16px = 40px */
h2 {
font-weight: 300;
font-size: 2.5rem;
}
/***************************************/
/* Fonts settings */
/***************************************/
html, body {
font-family: "Open Sans", Verdana, Arial, sans-serif !important;
}
h1, h2, h3, h4, h5, h6,
.navbar-nav li a,
.page-title,
.page-subtitle {
font-family: "Roboto Condensed", Verdana, Arial, sans-serif !important;
}
/***************************************/
/* Layout settings */
/***************************************/
/* Page container */
/*
The top-padding is the navbar's height (70px) + some additional pixels (30px).
The bottom-padding is the footer's height (60px) + some additional pixels (30px).
*/
.page-container {
/* Making relative position so, that we can absolute position the footer on the bottom */
position: relative;
padding: 100px 30px 90px 30px;
width: 100%;
min-height: 100%;
overflow: hidden;
margin: 0;
background-color: #fff;
}
/* Navigation bar */
/*
Navbar must have a fixed height. Example here: 70px (padding is included because of
box-sizing: border-box in html). Then make the top-padding of the .page-container
the same height (70px) + some additional pixels, in order to avoid overlapping!
*/
.navbar {
height: 70px;
padding: 22px 0 0 0;
margin: 0;
position: absolute;
top: 0;
left: 0;
right: 0;
border-bottom: 1px solid #f3f3f3;
background-color: #fff;
}
.navbar-nav {
margin: 0;
padding: 0 60px;
float: right;
list-style: none;
text-transform: uppercase;
}
.navbar-nav li {
display: block;
float: left;
position: relative;
}
.navbar-nav li a {
padding: 7px;
margin-left: 5px;
color: #000;
font-size: 1rem;
font-weight: 300;
border-bottom: 0px solid transparent;
}
.navbar-nav li a:hover {
color: #DF9237;
}
.navbar-nav li a.active {
color: #DF9237;
}
.navbar-nav li a.active:hover {
color: #000;
}
/* Page header */
.page-header {
margin: 0 0 30px 0;
padding: 0;
text-align: center;
}
.page-title {
margin: 0;
padding: 10px;
color: #DF9237;
text-transform: uppercase;
}
.page-subtitle {
/*margin-top: 10px;*/
padding: 0;
text-align: center;
font-weight: 300;
font-size: 1.0625rem;
font-size: 1.1rem;
}
.page-content {
}
/* Messages */
.messages {
padding: 10px;
margin: 0;
border-radius: 4px;
}
.success {
color: #3c763d;
border-color: #d6e9c6;
background-color: #dff0d8;
}
.danger {
color: #a94442;
border-color: #ebccd1;
background-color: #f2dede;
}
.warning {
color: #8a6d3b;
border-color: #faebcc;
background-color: #fcf8e3;
}
/* Mandatory fields in forms */
.mandatory {
font-size: 0.75rem;
color: #DF9237;
}
/* Footer */
/*
Footer must have a fixed height. Example here: 60px (padding is included because of
box-sizing: border-box in html). Then make the bottom-padding of the .page-container
the same height (60px) + some additional pixels, in order to avoid overlapping!
*/
.footer {
height: 60px;
padding-top: 20px;
position: absolute;
bottom: 0;
left: 0;
right: 0;
margin: 0;
font-weight: 300;
text-align: center;
background-color: #fff;
}
/* Form */
.form-container-outer {
padding: 30px;
position: relative;
text-align: center;
border-radius: 4px;
background-color: #f4f4f4;
}
.form-container-inner {
display: inline-block;
margin: 0 auto;
padding: 0;
}
.messages {
text-align: left;
}
.messages a {
text-transform: uppercase;
font-weight: 600;
}
.messages.success {
text-align: center;
}
#signup-form {
padding: 20px;
display: inline-block;
text-align: left;
}
.form-group {
margin-bottom: 20px;
}
.form-group label {
display: inline-block;
min-width: 100px;
}
input {
padding: 5px;
width: 250px;
font-size: 0.9375rem;
}
button {
padding: 7px 10px;
display: block;
float: right;
color: #fff;
font-size: 0.9375rem;
cursor: pointer;
border: none;
border-radius: 4px;
background-color: #5cb85c;
}
button:hover {
background-color: #449d44;
}
由于您使用的是正确的散列函数（password_hash），因此password列的长度至少应为255个字符。
CREATE TABLE `users` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`first_name` varchar(100) DEFAULT NULL,
`last_name` varchar(100) DEFAULT NULL,
`email` varchar(100) DEFAULT NULL,
`username` varchar(100) DEFAULT NULL,
`password` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
答案 1 :(得分：0)
您的初始$POST['submit']应为 $_POST['submit']
此外，您还需要为标记中的提交按钮添加名称属性。
您的("Location: .../..")应为("Location: ../..")。
这是我的观察，对不起，我无法运行代码来为您提供正常工作的代码。
感谢。