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usleep

(PHP 4, PHP 5)

usleep — Delay execution in microseconds

說明

void usleep ( int $micro_seconds )

Delays program execution for the given number of micro seconds.

參數

micro_seconds

Halt time in micro seconds. A micro second is one millionth of a second.

Return值

無回傳值。

更新日誌

版本 說明
5.0.0 This function now works on Windows systems.

範例

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";

?>

上例將輸出:

11:13:28
11:13:30