(PHP 4, PHP 5, PHP 7)
usleep — Delay execution in microseconds
$micro_seconds
) : voidDelays program execution for the given number of microseconds.
micro_secondsHalt time in microseconds. A microsecond is one millionth of a second.
Note: On Windows, the system may sleep longer that the given number of microseconds, depending on the hardware.
No value is returned.
Example #1 usleep() example
<?php
// Current time
echo date('h:i:s') . "\n";
// wait for 2 seconds
usleep(2000000);
// back!
echo date('h:i:s') . "\n";
?>
The above example will output:
11:13:28 11:13:30