using sleep()

Anon

I'm curious...

Suppose I use sleep(60) to delay execution of a script for a whole minute. Does this mean every Apache thread is delayed for this amount of time?

Or, how about this: suppose I have a line like sleep(1) in a script that is widely called (say in the hundreds of times per minute).

I guess the question really is how PHP and Apache handle multiple simultaneous scripts. If one script is sleeping, do the other ones also have to wait up?

-j

ame12

No... think of sleep as simply saying to the current script... just wait the amount of time specified in the argument. Sleep is quite friendly to the server in that it gives other tasks time to run (like other users hitting your server). So there is no problem with multiple users running a script with sleep calls on it.

With that said... not sure why you would call sleep... ("my script's too fast ... must slow it down..." :-)

Dave

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Anon

Hi.. Is it possible to use the sleep function to run the script every few minutes.. Like if you wanted to update a database or send out emails every so often. If it is possible to do it this way, is it a good idea? Will it make php run slow or eat up server resources?

I've been told that doing this will degrade php's performance.
I ask this because I'm a windows user looking for an alternative to running a cron job 🙂 ..

thanks,
--Ed

Anon

Hi. If we can use sleep() for periodicaly doing of something, this means that PHP programs can be used as services.
Question: How can another PHP program knows if this service is running or not?

Thans. Ion Gorgos