YT-Clone/signup.php at main · juan7180/YT-Clone · GitHub

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<?php
session_start();
require_once "db_connect.php";

$errors = [];

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = trim($_POST["username"]);
    $password = $_POST["password"];

    if (empty($username)) {
        $errors[] = "Username is required";
    }

    if (empty($password)) {
        $errors[] = "Password is required";
    }

    $stmt = $pdo->prepare("SELECT id FROM users WHERE username = ?");
    $stmt->execute([$username]);
    if ($stmt->fetchColumn()) {
        $errors[] = "Username is already taken";
    }

    if (empty($errors)) {
        $hashed_password = password_hash($password, PASSWORD_DEFAULT);

        $stmt = $pdo->prepare("INSERT INTO users (username, password) VALUES (?, ?)");
        if ($stmt->execute([$username, $hashed_password])) {
            header("Location: login");
            exit();
        } else {
            $errors[] = "Signup failed. Please try again.";
        }
    }
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>YT - Sign Up</title>
    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div class="container mt-5">
        <h2>Sign Up</h2>
        <?php if (!empty($errors)): ?>
            <div class="alert alert-danger" role="alert">
                <ul>
                    <?php foreach ($errors as $error): ?>
                        <li><?php echo $error; ?></li>
                    <?php endforeach; ?>
                </ul>
            </div>
        <?php endif; ?>
        <form method="post">
            <div class="form-group">
                <label for="username">Username</label>
                <input type="text" class="form-control" id="username" name="username" required>
            </div>
            <div class="form-group">
                <label for="password">Password</label>
                <input type="password" class="form-control" id="password" name="password" required>
            </div>
            <button type="submit" class="btn btn-primary">Sign Up</button>
        </form>
    </div>
</body>
</html>