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Delay execution in microseconds

Misc. Functions

Misc. Functions

usleep

(PHP 4, PHP 5)

usleep — Delay execution in microseconds

Description

void usleep ( int $micro_seconds )

Delays program execution for the given number of micro seconds.

Parameters

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

Return Values

No value is returned.

ChangeLog

Version	Description
5.0.0	This function now works on Windows systems.

Examples

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

See Also

Misc. Functions

Misc. Functions