Best way to define paths?

[terrydoang]

This is my piece of code

define('BASE_PATH', realpath(\_\_DIR\_\_) . DIRECTORY_SEPARATOR);

define(‘LIB’, BASE_PATH . ‘lib’ . DIRECTORY_SEPARATOR);
define(‘FRAMEWORK’, LIB . ‘framework’ . DIRECTORY_SEPARATOR);
define(‘DATABASE’, FRAMEWORK . ‘database’ . DIRECTORY_SEPARATOR);
define(‘DATETIME’, FRAMEWORK . ‘datetime’ . DIRECTORY_SEPARATOR);
define(‘AUTOLOADER’, FRAMEWORK . ‘autoloader’ . DIRECTORY_SEPARATOR);
define(‘FUNCTIONS’, FRAMEWORK . ‘functions’ . DIRECTORY_SEPARATOR);
define(‘ROUTER’, FRAMEWORK . ‘router’ . DIRECTORY_SEPARATOR);

define(‘INC’, BASE_PATH . ‘inc’ . DIRECTORY_SEPARATOR);
define(‘ADMIN’, BASE_PATH . ‘admin’ . DIRECTORY_SEPARATOR);
define(‘EXT’, BASE_PATH . ‘ext’ . DIRECTORY_SEPARATOR);
define(‘MODULES’, EXT . ‘modules’ . DIRECTORY_SEPARATOR);
define(‘PLUGINS’, EXT . ‘plugins’ . DIRECTORY_SEPARATOR);
define(‘THEMES’, EXT . ‘themes’ . DIRECTORY_SEPARATOR);

class Path {
public $paths = array(
‘Cymos’ => BASE_PATH,
‘Cymos\Lib’ => LIB,
‘Cymos\Framework’ => FRAMEWORK,
‘Cymos\Framework\Database’ => DATABASE,
‘Cymos\Framework\Datetime’ => DATETIME,
‘Cymos\Framework\Functions’ => FUNCTIONS
);
}


Because PHP doesn’t allow function or even concatenating string in the property value , I use a constant defined first, then assign it to the property of path…
Is it right to do this ? Is there any better solution ?
I know I can do it with global variable, but I think OOP design is better.

P.S. I use the class Path to give the base path to each namespaces (I want to use it on PSR-4 Autoloader)
And, I don’t just call the autoloader to register the namespace because I think it’s better to separate it… So, if Client wants to change the path, he doesn’t need to see the business logic