do..while(0) not staying true

Maybe I'm just reading the documentation incorrectly, but when I set up a: do { // loop until the test condition is satisfied then break [code] if ($i > 1) break; [code] } while(0); it just goes through once. I got around it by creating a true statement to test at the end "while ($i = $i);" and everything worked fine. What am I doing wrong? Thanks, David Minor