<?php namespace website; require_once 'autoload.php'; use website\db\DBTrait; class Common { use DBTrait; private static $instance = null; public static function setup() { ini_set('display_errors', 'On'); error_reporting(E_ALL | E_STRICT); } public static function getInstance() { if (is_null(self::$instance)) { self::$instance = new self(); } return self::$instance; } } Common::setup();