config.php

<?php

// development
// testing

$environment = 'production';

//-------------------------------------------

$config = [
  'production' => [
    'url' => 'http://127.0.0.1',
	'mail' => [],
	'database' => [
	  'client' => 'mysql',
	  'connection' => [
	    'host' => '127.0.0.1',
	    'user' => 'root',
	    'password' => '',
	    'database' => 'testing',
	    'charset' => 'utf8'
	  ]
	],
	'server' => [
	  'host' => '127.0.0.1',
	  'port' => '80'
	],
	'paths' => [
	  'upload' => 'uploads/'
	]
  ]
];

//-------------------------------------------
$c = $config[$environment];
//-------------------------------------------

echo $c['database']['client'];
echo $c['database']['connection']['host'];

echo $c['paths']['upload'];