conn->prepare("SELECT value FROM {$this->table} WHERE `key` = :key"); $stmt->execute(['key' => $key]); $result = $stmt->fetch(); return $result ? $result['value'] : $default; } public function set($key, $value) { // Check if exists if ($this->get($key) !== null) { $stmt = $this->conn->prepare("UPDATE {$this->table} SET value = :value WHERE `key` = :key"); } else { $stmt = $this->conn->prepare("INSERT INTO {$this->table} (`key`, value) VALUES (:key, :value)"); } return $stmt->execute(['key' => $key, 'value' => $value]); } public function getAll() { $stmt = $this->conn->query("SELECT * FROM {$this->table}"); $results = $stmt->fetchAll(); $settings = []; foreach ($results as $row) { $settings[$row['key']] = $row['value']; } return $settings; } }