<?php

class Config
{
    // Database configuration
    public static $database = array('username' => 'root', 'password' => '', 'host' => 'localhost', 'name' => 'blog');
    // Database connection using MySQLi
    public static $DB;
}
// Make a connection and store to Config::$DB
Config::$DB = new mysqli(Config::$database['host'], Config::$database['username'], Config::$database['password'], Config::$database['name']);