PHP Manual: 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.";
}
?>

time_nanosleep

Description

Parameters

Return Values

Changelog

Examples

See Also