Glenn Gasner wrote:
The php.net documentation for the sleep and usleep functions has me confused. I'm using shared hosting and I need to email my whole mailing list while not clogging the shared mail server. What I'm trying to do is put a pause between each email sent (like 10 seconds) so I can set it up to send a thousand (or whatever) messages without manually putting time between batches. My guess is that I should put a line with sleep(10); inside the mail sending loop so that it pauses between notes. However, the Jan-17 note on the usleep function mentions that these kinds of loops can consume 100% of CPU while running. The Jan-29 note on the time() function says that sleep uses way less CPU than wait(). I don't know how to test CPU usage of any PHP function. Is sleep() really so CPU intensive that I should avoid it, is there a better function to use, or is it exactly what I need and it'll be no problem even on a shared server?
Thanks! Glenn Gasner glenn at perex dot com
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