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PHP Manual [usleep]

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PHP Manual || Misc. Functions

(PHP 4, PHP 5, PHP 7)

usleepDelay execution in microseconds

Description

usleep ( int $micro_seconds ) : void

Delays program execution for the given number of microseconds.

Parameters

micro_seconds

Halt 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.

Return Values

No value is returned.

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



PHP Manual || Misc. Functions