Basic php question/ dreamweaver, show in a php page what we filled in html textfield

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PHP

XAMPP

I have a php and an html document, the html document has a form with textfield and i want that when i click in submit on html from it appear in the php page what i wrote in textfield.
I have this in php document for example:

<?php
 echo "$name";

 ?>

I already search and i know that if i put $_POST['name'] it works.
But i also discovered that the file php.bin in XAMPP if we change to on register_globals value it should be work without the $ _POST, but dont know why its not working, someone why can be?

Very thanks!