<?php
$db['db_host'] = "localhost";
$db['db_user'] = "root";
$db['db_pass'] = "lion";
$db["db_name"] = "cms";

foreach($db as $key => $value){
    define(strtoupper($key),$value);    
}

$connection = mysqli_connect(DB_HOST,DB_USER,DB_PASS,DB_NAME);

if($connection){
    echo "Connected";
}