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
- sleep() - Delay execution
- time_nanosleep() - Delay for a number of seconds and nanoseconds
- time_sleep_until() - Make the script sleep until the specified time
- set_time_limit() - Limits the maximum execution time