Код IT Загрузка примера кода…

PHP main.php 
<?php
require_once 'config.php';

if (isset($_SESSION['user_id'])) {
    header('Location: index.php');
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $email = trim($_POST['email'] ?? '');
    $password = $_POST['password'] ?? '';

    $stmt = $pdo->prepare("SELECT id, password_hash FROM users WHERE email = ?");
    $stmt->execute([$email]);
    $user = $stmt->fetch();

    if ($user && password_verify($password, $user['password_hash'])) {
        $_SESSION['user_id'] = $user['id'];
        header('Location: index.php');
        exit;
    } else {
        $error = 'Неверный email или пароль';
    }
}
?>
<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="utf-8">
    <title>Вход</title>
    <style>
        body { font-family: Arial, sans-serif; max-width: 400px; margin: 50px auto; padding: 20px; }
        .form-group { margin-bottom: 15px; }
        label { display: block; margin-bottom: 5px; }
        input { width: 100%; padding: 8px; box-sizing: border-box; }
        button { width: 100%; padding: 10px; background: #28a745; color: white; border: none; cursor: pointer; }
        .error { color: #dc3545; margin-bottom: 15px; }
    </style>
</head>
<body>
    <h1>Вход в систему</h1>
    
    <?php if (isset($error)): ?>
        <div class="error"><?php echo htmlspecialchars($error); ?></div>
    <?php endif; ?>
    
    <form method="post">
        <div class="form-group">
            <label for="email">Email</label>
            <input type="email" id="email" name="email" required>
        </div>
        <div class="form-group">
            <label for="password">Пароль</label>
            <input type="password" id="password" name="password" required>
        </div>
        <button type="submit">Войти</button>
    </form>
    
    <a href="register.php" style="display: block; text-align: center; margin-top: 20px; color: #007bff; text-decoration: none;">
        Нет аккаунта? Регистрация
    </a>
</body>
</html>
<?php
require_once 'config.php';

if (isset($_SESSION['user_id'])) {
    header('Location: index.php');
    exit;
}

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $email = trim($_POST['email'] ?? '');
    $password = $_POST['password'] ?? '';

    $stmt = $pdo->prepare("SELECT id, password_hash FROM users WHERE email = ?");
    $stmt->execute([$email]);
    $user = $stmt->fetch();

    if ($user && password_verify($password, $user['password_hash'])) {
        $_SESSION['user_id'] = $user['id'];
        header('Location: index.php');
        exit;
    } else {
        $error = 'Неверный email или пароль';
    }
}
?>
<!DOCTYPE html>
<html lang="ru">
<head>
    <meta charset="utf-8">
    <title>Вход</title>
    <style>
        body { font-family: Arial, sans-serif; max-width: 400px; margin: 50px auto; padding: 20px; }
        .form-group { margin-bottom: 15px; }
        label { display: block; margin-bottom: 5px; }
        input { width: 100%; padding: 8px; box-sizing: border-box; }
        button { width: 100%; padding: 10px; background: #28a745; color: white; border: none; cursor: pointer; }
        .error { color: #dc3545; margin-bottom: 15px; }
    </style>
</head>
<body>
    <h1>Вход в систему</h1>
    
    <?php if (isset($error)): ?>
        <div class="error"><?php echo htmlspecialchars($error); ?></div>
    <?php endif; ?>
    
    <form method="post">
        <div class="form-group">
            <label for="email">Email</label>
            <input type="email" id="email" name="email" required>
        </div>
        <div class="form-group">
            <label for="password">Пароль</label>
            <input type="password" id="password" name="password" required>
        </div>
        <button type="submit">Войти</button>
    </form>
    
    <a href="register.php" style="display: block; text-align: center; margin-top: 20px; color: #007bff; text-decoration: none;">
        Нет аккаунта? Регистрация
    </a>
</body>
</html>