php - 如何解决php功能错误?
问题描述
我最近手动安装了带有 Apache 和 MySQL 的 PHP。我决定使用 PHP 为我的网站开发一个登录页面,其中 Apache 作为 Web 服务器,MySQL 作为数据库,用于验证登录凭据。它有5个部分:
- config.php用于连接数据库
- register.php新用户可以在其中注册自己
- login.php现有用户可以登录的地方
- 成功登录后重定向用户的welcome.php和
- logout.php用于注销。
我使用面向对象的 PHP 脚本来开发这些页面。这是我的代码:
配置文件
<?php
/* Database credentials. I am running MySQL
server with default setting (user 'root' with 'root' password) */
define('DB_SERVER', 'localhost');
define('DB_USERNAME', 'root');
define('DB_PASSWORD', 'root');
define('DB_NAME', 'LoginData');
/* Attempt to connect to MySQL database */
$mysqli = new mysqli(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_NAME);
// Check connection
if($mysqli === false){
die("ERROR: Could not connect. " . $mysqli->connect_error);
}
?>
注册.php
<?php
// Include config file
require_once 'config.php';
// Define variables and initialize with empty values
$username = $password = $confirm_password = "";
$username_err = $password_err = $confirm_password_err = "";
// Processing form data when form is submitted
if($_SERVER["REQUEST_METHOD"] == "POST"){
// Validate username
if(empty(trim($_POST["username"]))){
$username_err = "Please enter a username.";
} else{
// Prepare a select statement
$sql = "SELECT id FROM users WHERE username = ?";
if($stmt = $mysqli->prepare($sql)){
// Bind variables to the prepared statement as parameters
$stmt->bind_param("s", $param_username);
// Set parameters
$param_username = trim($_POST["username"]);
// Attempt to execute the prepared statement
if($stmt->execute()){
// store result
$stmt->store_result();
if($stmt->num_rows == 1){
$username_err = "This username is already taken.";
} else{
$username = trim($_POST["username"]);
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
$stmt->close();
}
// Validate password
if(empty(trim($_POST['password']))){
$password_err = "Please enter a password.";
} elseif(strlen(trim($_POST['password'])) < 6){
$password_err = "Password must have atleast 6 characters.";
} else{
$password = trim($_POST['password']);
}
// Validate confirm password
if(empty(trim($_POST["confirm_password"]))){
$confirm_password_err = 'Please confirm password.';
} else{
$confirm_password = trim($_POST['confirm_password']);
if($password != $confirm_password){
$confirm_password_err = 'Password did not match.';
}
}
// Check input errors before inserting in database
if(empty($username_err) && empty($password_err) && empty($confirm_password_err)){
// Prepare an insert statement
$sql = "INSERT INTO users (username, password) VALUES (?, ?)";
if($stmt = $mysqli->prepare($sql)){
// Bind variables to the prepared statement as parameters
$stmt->bind_param("ss", $param_username, $param_password);
// Set parameters
$param_username = $username;
$param_password = password_hash($password, PASSWORD_DEFAULT); // Creates a password hash
// Attempt to execute the prepared statement
if($stmt->execute()){
// Redirect to login page
header("location: login.php");
} else{
echo "Something went wrong. Please try again later.";
}
}
// Close statement
$stmt->close();
}
// Close connection
$mysqli->close();
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Sign Up</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css">
<style type="text/css">
body{ font: 14px sans-serif; }
.wrapper{ width: 350px; padding: 20px; }
</style>
</head>
<body>
<div class="wrapper">
<h2>Sign Up</h2>
<p>Please fill this form to create an account.</p>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<div class="form-group <?php echo (!empty($username_err)) ? 'has-error' : ''; ?>">
<label>Username</label>
<input type="text" name="username"class="form-control" value="<?php echo $username; ?>">
<span class="help-block"><?php echo $username_err; ?></span>
</div>
<div class="form-group <?php echo (!empty($password_err)) ? 'has-error' : ''; ?>">
<label>Password</label>
<input type="password" name="password" class="form-control" value="<?php echo $password; ?>">
<span class="help-block"><?php echo $password_err; ?></span>
</div>
<div class="form-group <?php echo (!empty($confirm_password_err)) ? 'has-error' : ''; ?>">
<label>Confirm Password</label>
<input type="password" name="confirm_password" class="form-control" value="<?php echo $confirm_password; ?>">
<span class="help-block"><?php echo $confirm_password_err; ?></span>
</div>
<div class="form-group">
<input type="submit" class="btn btn-primary" value="Submit">
<input type="reset" class="btn btn-default" value="Reset">
</div>
<p>Already have an account? <a href="login.php">Login here</a>.</p>
</form>
</div>
</body>
</html>
登录.php
<?php
// Include config file
require_once 'config.php';
// Define variables and initialize with empty values
$username = $password = "";
$username_err = $password_err = "";
// Processing form data when form is submitted
if($_SERVER["REQUEST_METHOD"] == "POST"){
// Check if username is empty
if(empty(trim($_POST["username"]))){
$username_err = 'Please enter username.';
} else{
$username = trim($_POST["username"]);
}
// Check if password is empty
if(empty(trim($_POST['password']))){
$password_err = 'Please enter your password.';
} else{
$password = trim($_POST['password']);
}
// Validate credentials
if(empty($username_err) && empty($password_err)){
// Prepare a select statement
$sql = "SELECT username, password FROM users WHERE username = ?";
if($stmt = $mysqli->prepare($sql)){
// Bind variables to the prepared statement as parameters
$stmt->bind_param("s", $param_username);
// Set parameters
$param_username = $username;
// Attempt to execute the prepared statement
if($stmt->execute()){
// Store result
$stmt->store_result();
// Check if username exists, if yes then verify password
if($stmt->num_rows == 1){
// Bind result variables
$stmt->bind_result($username, $hashed_password);
if($stmt->fetch()){
if(password_verify($password, $hashed_password)){
/* Password is correct, so start a new session and
save the username to the session */
session_start();
$_SESSION['username'] = $username;
header("location: welcome.php");
} else{
// Display an error message if password is not valid
$password_err = 'The password you entered was not valid.';
}
}
} else{
// Display an error message if username doesn't exist
$username_err = 'No account found with that username.';
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
$stmt->close();
}
// Close connection
$mysqli->close();
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Login</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css">
<style type="text/css">
body{ font: 14px sans-serif; }
.wrapper{ width: 350px; padding: 20px; }
</style>
</head>
<body>
<div class="wrapper">
<h2>Login</h2>
<p>Please fill in your credentials to login.</p>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<div class="form-group <?php echo (!empty($username_err)) ? 'has-error' : ''; ?>">
<label>Username</label>
<input type="text" name="username"class="form-control" value="<?php echo $username; ?>">
<span class="help-block"><?php echo $username_err; ?></span>
</div>
<div class="form-group <?php echo (!empty($password_err)) ? 'has-error' : ''; ?>">
<label>Password</label>
<input type="password" name="password" class="form-control">
<span class="help-block"><?php echo $password_err; ?></span>
</div>
<div class="form-group">
<input type="submit" class="btn btn-primary" value="Login">
</div>
<p>Don't have an account? <a href="register.php">Sign up now</a>.</p>
</form>
</div>
</body>
</html>
欢迎.php
<?php
// Initialize the session
session_start();
// If session variable is not set it will redirect to login page
if(!isset($_SESSION['username']) || empty($_SESSION['username'])){
header("location: login.php");
exit;
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Welcome</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.css">
<style type="text/css">
body{ font: 14px sans-serif; text-align: center; }
</style>
</head>
<body>
<div class="page-header">
<h1>Hi, <b><?php echo htmlspecialchars($_SESSION['username']); ?></b>. Welcome to our site.</h1>
</div>
<p><a href="logout.php" class="btn btn-danger">Sign Out of Your Account</a></p>
</body>
</html>
注销.php
<?php
// Initialize the session
session_start();
// Unset all of the session variables
$_SESSION = array();
// Destroy the session.
session_destroy();
// Redirect to login page
header("location: login.php");
exit;
?>
我的问题是当我打开我的任何页面时,我看到这些错误:
警告: mysqli::__construct(): 服务器请求的身份验证方法未知客户端 [caching_sha2_password] 在 C:\Apache24\htdocs\config.php第10 行。
警告: mysqli::__construct(): (HY000/2054): 服务器在第 10 行的 C:\Apache24\htdocs\config.php 中请求客户端未知的 身份验证方法。
我想查看 Apache Web 服务器的httpd.conf文件,我也附在下面: LoadModule php7_module "c:\php\php7apache2_4.dll"
<IfModule php7_module>
AddHandler application/x-httpd-php .php
AddType application/x-httpd-php .php .html
PHPIniDir "C:\PHP"
</IfModule>
我想查看php.ini文件,我还在下面附上了它的几个部分:
第一部分
; Directory in which the loadable extensions (modules) reside.
; http://php.net/extension-dir
; extension_dir = "./"
; On windows:
extension_dir = "ext"
第二部分
;extension=php_bz2.dll
;extension=php_curl.dll
;extension=php_fileinfo.dll
;extension=php_ftp.dll
;extension=php_gd2.dll
;extension=php_gettext.dll
;extension=php_gmp.dll
;extension=php_intl.dll
;extension=php_imap.dll
;extension=php_interbase.dll
;extension=php_ldap.dll
;extension=php_mbstring.dll
;extension=php_exif.dll ; Must be after mbstring as it depends on it
extension=C:/PHP/ext/php_mysqli.dll
;extension=php_oci8_12c.dll ; Use with Oracle Database 12c Instant Client
;extension=php_odbc.dll
;extension=php_openssl.dll
;extension=php_pdo_firebird.dll
extension=C:/PHP/ext/php_pdo_mysql.dll
;extension=php_pdo_oci.dll
;extension=php_pdo_odbc.dll
;extension=php_pdo_pgsql.dll
;extension=php_pdo_sqlite.dll
;extension=php_pgsql.dll
;extension=php_shmop.dll
我的 Apache Web 服务器运行良好,而且我还可以查看 phpinfo(); 文件。如下:
Server API: Apache 2.0 Handler
Virtual Directory Support: enabled
Configuration File (php.ini) Path: C:\Windows
Loaded Configuration File: C:\PHP\php.ini
MysqlI Support: enabled
Client API library version: mysqlnd 5.0.12-dev - 20150407 - $Id: 38fea24f2847fa7519001be390c98ae0acafe387 $
PDO support: enabled
有人可以告诉我如何解决这些错误,以便我可以成功登录我的网站。
解决方案
为了这 :
警告:mysqli::__construct():服务器在第 10 行的 C:\Apache24\htdocs\config.php 中请求客户端未知的身份验证方法 [caching_sha2_password]。
您的 MySQL 服务器仍在使用旧密码哈希机制,该机制在 MySQL 4.1 中已更改。MySQLP mysqli 客户端较新,不支持旧密码机制。因为这会导致错误。阅读此链接以获取更多详细信息,它只是不兼容
我还建议您根据您的操作系统使用 XAMP 或 WAMP,这是比手动配置更好的选择
推荐阅读
- swift - 遍历快照中的子节点并获取 Firebase 中每个子节点的值
- azure - 在 Azure 中创建 kubernetes LoadBalancer 服务时如何避免/控制默认安全组规则的创建?
- json - 使用 `CALL TRANSFORMATION` 在 ABAP 中自定义空值/初始值的序列化
- excel - 如何在同一个工作表中使用 2 个不同的代码块?
- amazon-web-services - AWS 自动缩放组未收到来自 ec2 实例的信号
- sql - 为所有结果行重复所有列和数据
- python - 使用 pandas / python 对过滤后的数据透视表求和
- javascript - JavaScript 通过事件引用删除 EventListener
- postgresql - 如何使用 Liquibase 和 Postgres 创建不带引号的表名?
- python - sklearn.tree.DecisionTreeClassifier 是否停留在预测最频繁的类别?