Does sleep time count for execution time limit?

php sleep execution max
caw picture caw · Apr 12, 2009 · Viewed 28.2k times · Source

I have two questions concerning the sleep() function in PHP:

  1. Does the sleep time affect the maximum execution time limit of my PHP scripts? Sometimes, PHP shows the message "maximum execution time of 30 seconds exceeded". Will this message appear if I use sleep(31)?

  2. Are there any risks when using the sleep()function? Does it cost a lot of CPU performance?

Answer

Samuel picture Samuel · Apr 12, 2009

You should try it, just have a script that sleeps for more than your maximum execution time.

<?php
  sleep(ini_get('max_execution_time') + 10);
?>

Spoiler: Under Linux, sleeping time is ignored, but under Windows, it counts as execution time.

Related questions

PHP - sleep() in milliseconds

Does PHP provide a function to sleep in milliseconds? Right now, I'm doing something similar to this, as a workaround. $ms = 10000; $seconds = round($ms / 1000, 2); sleep($seconds); I'd like to know whether there is a more generic function that is available …

Read More
Difference among sleep() and usleep() in PHP

Can any body explain me what is the difference among sleep() and usleep() in PHP. I have directed to use following scripts to do chat application for long pulling but in this script I am getting same effect using usleep(25000); …

Read More
What is a practical use for PHP's sleep()?

I just had a look at the docs on sleep(). Where would you use this function? Is it there to give the CPU a break in an expensive function? Any common pitfalls?

Read More