通过GET在URL中加入哈希符号

I am trying to pass a text string with the symbol # in it and I am having problems receiving the GET method with PHP.

I tried to change the symbol # by %23 directly in the URL and it does not work.

I have a file type /tests.php?value=hello#world and I need to make that symbol # be treated as plain text and not as a special HTML anchor character.

Any ideas?