How would I execute a shell script from PHP while giving constant/live feedback to the browser? I understand from the system function documentation:

The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module.

I'm not clear on what they mean by running it as a 'server module'. I attempted to run the script in the cgi-bin, but either I'm doing it wrong, or that's not what they mean.

Example PHP code:

<?php

system('/var/lib/script_test.sh');

Example shell code:

#!/bin/bash

echo "Start..."
for i in {1..10}
do
        echo "$i..."
        sleep 1
done
echo "Done."