Your copy-and-paste did something weird then.  That code is fine and copying and pasting it from this bug report works fine.

Can you rename the .php file as .txt, so we can see EXACTLY what you've 
got please?

Checking the link shows that the reporter's page is (at least now) working as expected, so this bug truly is bogus.

Further, it is noted that this:

    (I'm damned if I know what version of PHP they have. I selected the first one because you would let me select "I dunno".)

.... causes an error in our spell checker:

    Operator error: between chair and keyboard, undefined word "dunno", expecting "don't know" or "am not sure" in paragraph 3.

I discovered that, unlike with a .htm file, when you open a .php file that you have created by originally typing out a txt file and saving and closing it and then changing the file extension from txt to php in Windows Explorer, you cannot open it in Notepad and alter it and save it again directly out of Notepad as long as the extension is still php. Instead, you must first change the extension back to txt before opening it, then save it again as a txt file and then change it back again to php in W.E.

I typed out an error in my original file, and I kept thinking I had saved a new one when I actually hadn't, and I kept unknowingly uploading it again and again to my website directory. Copying what you had on your webpage and copying it directly into my php displayed in Notebook was my last desperate act.

When I finally corrected it again by the method I described, the file worked as advertised.

(If you read American comic books, you learn that "I dunno" is an attempt to spell phonetically the way a lot of people say "I don't know".)