Web студия "GrandView"

Описание

mixed time_nanosleep ( int seconds, int nanoseconds )

Delays program execution for the given number of seconds and nanoseconds.

seconds must be a positive integer, and nanoseconds must be a positive integer less than 1 billion.

Возвращаемые значения

Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.

If the delay was interrupted by a signal, an associative array will be returned with the components:

seconds - number of seconds remaining in the delay
nanoseconds - number of nanoseconds remaining in the delay

Примеры

Пример 1. time_nanosleep() example

<?php // Careful! This won't work as expected if an array is returned if (time_nanosleep(0, 500000000)) { echo "Slept for half a second.\n"; } // This is better: if (time_nanosleep(0, 500000000) === true) { echo "Slept for half a second.\n"; } // And this is the best: $nano = time_nanosleep(2, 100000); if ($nano === true) { echo "Slept for 2 seconds, 100 milliseconds.\n"; } elseif ($nano === false) { echo "Sleeping failed.\n"; } elseif (is_array($nano)) { $seconds = $nano['seconds']; $nanoseconds = $nano['nanoseconds']; echo "Interrupted by a signal.\n"; echo "Time remaining: $seconds seconds, $nanoseconds nanoseconds."; } ?>

Замечание: Для Windows-платформ эта функция не реализована.

add a note User Contributed Notes
time_nanosleep

fantasysportswire at yahoo dot com
18-Dec-2006 03:27


Just glancing at this - and the note from over a year ago with a implementation for windows.. with 5.0.0 and higher it would be simplier to just do something like......



<?



if (!function_exists('time_nanosleep')) {



function time_nanosleep($seconds, $nanoseconds) {



sleep($seconds);

usleep(round($nanoseconds/100));



return true;



}



}



?>



....off the top of my head - obviously simple enough there should be no mistakes.. but those are the ones that always seem to get ya :( .....

anybody (a) emuxperts.net
21-Aug-2006 04:03


Documentation states that "seconds" must be positive. This is not correct, 0 is possible.



Rather, "seconds" must be non-negative.

m at kufi dot net
13-Aug-2005 02:03


You should take into account, if you use the function replacement down here, the CPU will be in use of 99% for the time of execution...



(A little bit better in this situation is to let the 'full seconds' go by a normal sleep command (makes the thread sleep!, and uses minimum cpu))



<?php

    //THIS IS THE FUNCTION WE ARE TALKIN ABOUT

    function timeWait($microtime)

    {

//optimizations added by me [start]

//sleep the full seconds

sleep(intval($microtime));

//set the microtime to only resleep the last part of the nanos

$microtime = $microtime - intval($microtime);

//optimizations added by me [end]



        $timeLimit = $microtime + array_sum(explode(" ",microtime()));

        while(array_sum(explode(" ",microtime())) < $timeLimit)

        {/*DO NOTHING*/}

        return(true);

    }

 

    //THIS IS HOW WE CAN USE IT

    echo "Process started at " . date("H:i:s") . " and " . current(explode(" ",microtime())) . " nanoseconds.<br>";

    timeWait(5.5); //With this call the system will wait 5 seconds and a half. You can use either integer or float.

    echo "Process completed at " . date("H:i:s") . " and " . current(explode(" ",microtime())) . " nanoseconds.";

 ?>

tecnomaniac at ig dot com dot br
26-Jul-2005 03:04


This is an alternative function to sleep_nanosecond that you can use with PHP versions below PHP 5.0. It is not very accurate if we talk about nanoseconds but the results are satisfatory. Enjoy!



<?php

    //THIS IS THE FUNCTION WE ARE TALKIN ABOUT

    function timeWait($microtime)

    {

        $timeLimit = $microtime + array_sum(explode(" ",microtime()));

        while(array_sum(explode(" ",microtime())) < $timeLimit)

        {/*DO NOTHING*/}

        return(true);

    }



    //THIS IS HOW WE CAN USE IT

    echo "Process started at " . date("H:i:s") . " and " . current(explode(" ",microtime())) . " nanoseconds.<br>";

    timeWait(5.5); //With this call the system will wait 5 seconds and a half. You can use either integer or float.

    echo "Process completed at " . date("H:i:s") . " and " . current(explode(" ",microtime())) . " nanoseconds.";

?>

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time_nanosleep

Описание

Возвращаемые значения

Смотрите также

Примеры