time_nanosleep
(PHP 5, PHP 7)
time_nanosleep — Delay for a number of seconds and nanoseconds
Description
mixed time_nanosleep ( int $seconds , int $nanoseconds ) Delays program execution for the given number of seconds and nanoseconds.
Parameters
seconds
Must be a non-negative integer.
nanoseconds
Must be a non-negative integer less than 1 billion.
Return Values
Returns TRUE on success or FALSE on failure.
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
Changelog
Version | Description |
|---|---|
5.3.0 | This function is now available on Windows platforms. |
Examples
Example #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?microseconds.\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.";
}
?>See Also
- sleep() - Delay execution
- usleep() - Delay execution in microseconds
- time_sleep_until() - Make the script sleep until the specified time
- set_time_limit() - Limits the maximum execution time
← sys_getloadavg
time_sleep_until →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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