Using require_once for up directory not working

Question

I am using require_once like this

require_once(\'../mycode.php\')

I am developing a wordpress plugin. My plugin folder is yves-slider where

Answer 1

You want to make that relative to the current path the file is in:

require_once __DIR__ . '/../yves-slider.php';

What probably is happening is that the current path PHP looks in is not the path you think it is. If you are curious about what it is (the current path) you could do echo getcwd();.