time_nanosleep
(PHP 5, PHP 7)
time_nanosleep — Delay for a number of seconds and nanoseconds
Description
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
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
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
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References
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