[poedit-users] Using Poedit with XAMPP

I am struggling for quite a while now to get into translation files with PHP's gettext() function and
creating the files with Poedit. Poedit didn't come with a helpfile either and I tried lots of things found
online but nothing works.. 
I am on Mac OSX with an XAMPP configuration.

on OSX my XAMPP dir is

/Applications/XAMPP/xamppfiles/htdocs

inside this dir I created gettext.php with

<?php
echo _("Hello World");
?>

and the following folders:

/locale/
/locale/it_IT/LC_MESSAGES/

With Poedit when I do
> File > New Catalog

- Project info
Language: Italian
Country: Italy
Charset: UTF-8
Source code charset: UTF-8

- Paths