Fix Windows style exploding root path

If root path look like:
_C:\xampp\htdocs\frontend/../../backend/www_
code generate error: Root folder does not exist. 
Because 
```
$comps = explode('/', $path);
```
explode only unix separators, later in foreach it popup full first part _C:\xampp\htdocs\frontend._
In the end return only **../backend/www**

I fix this problem by replacing all windows separators **\** to unix, and other code work fine.