Description

void usleep ( int micro_seconds )

The usleep() function delays program execution for the given number of micro_seconds. A microsecond is one millionth of a second.

例子 1. usleep() example


<?php

// Current time
echo date('h:i:s') . "\n";

// wait for 2 secondes
usleep(2000000);

// back!
echo date('h:i:s') . "\n";

?>

This script will output :

11:13:28
11:13:30

注: This function did not work on Windows systems until PHP 5.0.0

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