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register.php

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<?php
require "database.php";
session_start();

$error = "";

if ($_SERVER["REQUEST_METHOD"] === "POST") {
    if (!$_POST["username"] || !$_POST["password"]) {
        $error = "All fields required";
    } else {
        $hash = password_hash($_POST["password"], PASSWORD_DEFAULT);

        try {
            $stmt = $conn->prepare(
                "INSERT INTO Players (Username, PasswordHash, Email)
                 VALUES (?, ?, ?)"
            );
            $stmt->execute([
                $_POST["username"],
                $hash,
                $_POST["email"]
            ]);

            header("Location: login.php");
            exit;
        } catch (PDOException $e) {
            $error = "Username already exists";
        }
    }
}
?>

<!DOCTYPE html>
<html>
<head>
    <title>Register</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>

<div class="container mt-5">
    <h2>Register</h2>

    <?php if ($error): ?>
        <div class="alert alert-danger"><?= $error ?></div>
    <?php endif; ?>

    <form method="POST">
        <input class="form-control mb-2" name="username" placeholder="Username" required>
        <input class="form-control mb-2" name="email" placeholder="Email" required>
        <input class="form-control mb-2" type="password" name="password" placeholder="Password" required>

        <button class="btn btn-success">Register</button>
        <a href="index.php" class="btn btn-secondary">Back</a>
    </form>
</div>

</body>
</html>