Try making the delay longer, usleep(100000); will sleep for 1/10 of a second and is very hard to notice.

Doesnt work. I only put 100000 as an example (admittedly too small to notice if you're watching it), I should have put 10000000 or something - put it in a loop that repeats a few thousand times and it still doesnt do anything.

Try running the following:
php -r " var_dump(time(), usleep(10000000), time()); "

Ok - I wont be able to check until after the weekend. I 
tried the output of  
 
<?php echo time(); usleep(10000000); echo time(); ?> 
 
earlier (before submitting the bug) and it comes back with 
the same time twice so unless var_dump gives you any extra 
info that will help....

RTFM: Note:  This function does not work on Windows systems.
(Yes, manual might be correct?)

The function exists, but it does absolutely nothing on windows.

So every other language I know manages to call Sleep under  
win32 and it works, but php doesnt?

Sleep() has millisecond resolution, not microsecond resolution.

I'll look into getting usleep working under win32, but
make no promises.

:) Hell, who need microseconds anyway - being able to 
delay for less than a second without chewing cpu would be 
enough for me. Thanks.

Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip

I've implemented this in PHP 5.
Since it requires win98 and later, it might not go into the php4 branch.
Please try a php 5 snapshot and let us know how well it works for you.

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.

I also really NEEED this usleep function to work,
but tested the latest php 5 as advised an
it does not work :(

Have you removed this feature allready again? why?

according to this :
http://groups.google.com/groups?q=usleep+win32&hl=de&lr=&ie=UTF-8&oe=UTF-8&selm=9401pp%242fgt%241%40FreeBSD.csie.NCTU.edu.tw&rnum=3

===========================================================
[2001-01-15 18:22:56] christophe@winamp.com
usleep exists on Win32 as the Sleep command (it takes a millisecond value as parameter) so here is the patch for making the usleep() php function to work on win32 platforms:

in main/win95nt.h, line 27:

#define php_sleep(t) Sleep(t*1000)

add the following line so it looks like:
#define php_sleep(t) Sleep(t*1000)
#define usleep(t)  Sleep(t)

and in config.w32.h, line 93:

/* Define if you have the usleep function.  */
#undef HAVE_USLEEP

change it to:

/* Define if you have the usleep function.  */
#define HAVE_USLEEP 1

-Christophe Thibault
Nullsoft (www.nullsoft.com/www.winamp.com)
===========================================================

I just don't know how to do this change as a "user" of php ... PLEASE HELP and put this in the new release!

Chris

The next php5 snapshot should include a correctly working usleep().

Looks like it works with PHP5 RC2 thanks! How about a backport to v4? Thanks again

We do not make new features available in PHP 4 as it's in "bug fix only mode".