db = $db; } public function getAllUsers() { return $this->db->select('SELECT * FROM users'); } public function getUserById($id) { return $this->db->select('SELECT * FROM users WHERE id = ?', [$id])->fetch(); } public function createUser($username, $email, $password) { $hashedPassword = password_hash($password, PASSWORD_DEFAULT); $this->db->insert('INSERT INTO users (username, email, password) VALUES (?, ?, ?)', [$username, $email, $hashedPassword]); return $this->db->lastInsertId(); } public function updateUser($id, $username, $email, $password) { $hashedPassword = password_hash($password, PASSWORD_DEFAULT); $this->db->update('UPDATE users SET username = ?, email = ?, password = ? WHERE id = ?', [$username, $email, $hashedPassword, $id]); return true; } public function deleteUser($id) { $this->db->delete('DELETE FROM users WHERE id = ?', [$id]); return true; } }