Misc. Functions
PHP Manual

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

  • sleep
  • time_nanosleep
  • time_sleep_until
  • set_time_limit