flush() doesn't seem to work for Windows PHP shell script

Hi. I have a PHP shell script running on Windows that I would like to display status on where it's at in the code because it takes a long time to finish. Using flush() doesn't seem to work as all the status messages still don't output to screen until the script finishes running even though I'm doing flush() right after echo. Is there another way to get status messages while the script is running? Thanks. David