note 108851 added to function.time-sleep-until

Not realising that this function existed, I wrote something similar, but it has the additional facility to specify a minimum pause even if the target time has already been reached, for instance in a processor-intensive loop. It's in seconds rather than microseconds (it's intended for heavy-duty CLI scripts), but that could easily be changed by using microtime(true) and usleep if greater granularity was required. <?php /** * Pause processing until the specified time, to avoid hammering a DB or service * * @param int $target_time Timestamp * @param int $min_sleep Always sleep for a minimum number of seconds, * even if the target timestamp has already passed. * Default 0, meaning only sleep until the target timestamp is reached. * * @example <code> while ( ! $finished ) { $minimum_start_of_next_loop = time() + $min_secs_per_loop; # DO STUFF THAT MAY OR MAY NOT TAKE VERY LONG sleep_until( $minimum_start_of_next_loop, $min_pause_between_loops ); } </code> */ function sleep_until($target_time, $min_sleep = 0) { $time_now = time(); $time_to_target = $target_time - $time_now; // If we've already reached the target time, that's fine if ( $time_to_target <= $min_sleep ) { // If required, sleep for a bit anyway sleep( $min_sleep ); } else { // Sleep for the number of seconds until the target time sleep( $time_to_target ); } } ?> ---- Server IP: 94.76.225.145 Probable Submitter: 62.189.198.114 ---- Manual Page -- http://www.php.net/manual/en/function.time-sleep-until.php Edit -- https://master.php.net/note/edit/108851 Del: integrated -- https://master.php.net/note/delete/108851/integrated Del: useless -- https://master.php.net/note/delete/108851/useless Del: bad code -- https://master.php.net/note/delete/108851/bad+code Del: spam -- https://master.php.net/note/delete/108851/spam Del: non-english -- https://master.php.net/note/delete/108851/non-english Del: in docs -- https://master.php.net/note/delete/108851/in+docs Del: other reasons-- https://master.php.net/note/delete/108851 Reject -- https://master.php.net/note/reject/108851 Search -- https://master.php.net/manage/user-notes.php