php how to go one level up on dirname(__FILE__)
Solution 1:
For PHP < 5.3 use:
$upOne = realpath(dirname(__FILE__) . '/..');
In PHP 5.3 to 5.6 use:
$upOne = realpath(__DIR__ . '/..');
In PHP >= 7.0 use:
$upOne = dirname(__DIR__, 1);
Solution 2:
If you happen to have php 7.0+ you could use levels.
dirname( __FILE__, 2 ) with the second parameter you can define the amount of levels you want to go back.
http://php.net/manual/en/function.dirname.php