I'm curious because I've never used them, but what's the added advantage or utility of an NPH script over a non-NPH script. To bypass output buffer and avoid browser timeouts, I usually just set $&#124 and an alarm:

{
  local $| = 1;
  local $SIG{ALRM} = sub { print `/usr/bin/fortune`; alarm ALARM_TIME;
+ };
  alarm 1;
  ... process that (might) take a very long time ...
  alarm 0;
}
[download]

Would using NPH be better?

update Thanks, merlyn.

Thanks, ERic