我的代码实际上正在工作,但它根本不安全,我不想使用MD5,因为它不是那么安全.我一直在查找密码哈希,但我不确定如何将其合并到我的代码中.
登录:
require_once __DIR__.'/config.php';
session_start();
$dbh = new PDO('mysql:host=' . DB_HOST . ';dbname=' . DB_USERNAME, DB_USERNAME, DB_PASSWORD);
$sql = "SELECT * FROM users WHERE username = :u AND password = :p";
$query = $dbh->prepare($sql); // prepare
$params = array(":u" => $_POST['username'], ":p" => $_POST['password']);
$query->execute($params); // execute
$results = $query->fetchAll(); // then fetch
//hash passwords pls
if (count($results) > 0 ){
$firstrow = $results[0];
$_SESSION['username'] = $firstrow['username'];
echo "Hello $username you have successfully logged in";
//header ("location:.php");
}
else{
echo …我正在编写一段代码,在完成以下表单后更改数据库中的密码:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Password Change</title>
</head>
<body>
<h1>Change Password</h1>
<form method="POST" action="password_change.php">
<table>
<tr>
<td>Enter your UserName</td>
<td><input type="username" size="10" name="username"></td>
</tr>
<tr>
<td>Enter your existing password:</td>
<td><input type="password" size="10" name="password"></td>
</tr>
<tr>
<td>Enter your new password:</td>
<td><input type="password" size="10" name="newpassword"></td>
</tr>
<tr>
<td>Re-enter your new password:</td>
<td><input type="password" size="10" name="confirmnewpassword"></td>
</tr>
</table>
<p><input type="submit" value="Update Password">
</form>
<p><a href="home.php">Home</a>
<p><a href="logout.php">Logout</a>
</body>
</html>
和PHP:
<?php
session_start();
include 'dbconfig.php';
$username = $_POST['username'];
$password = $_POST['password'];
$newpassword …