PHP获取祖父dir路径

Question

I know PHP > 5.3 added the Magic constants : __DIR__ to get the father dir path,

But how can I get the grandfather dir path in a smarter way?

1. __DIR__.'/../'

2. dirname(__DIR__)

Answer 1

Use the second parameter levels for the dirname call

echo dirname(__DIR__,2); // 1 Level up = Father. 2 Levels up = Grandfather

However, it is not any better than what you already have. It's just smarter like you asked for :)

Answer 2

You can simply move up a folder by using .. .

For example:

$path = dirname(__DIR__);
$grandfatherPath = $path.'/../../';