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PHP Quiz PHP CertificatePHP usleep() Function
Complete PHP Misc Reference
Definition and Usage
The usleep() function delays execution of the current script for a specified number of microseconds (a microsecond equals one millionth of a second).
Syntax
usleep(microseconds)
| Parameter | Description |
|---|---|
| microseconds | Required. Specifies the number of microseconds to delay the script |
Tips and Notes
Note: This function did not work on Windows platforms until PHP 5.
Example
<?php
echo date('h:i:s') . "<br />";
//sleep for 10 seconds
usleep(10000000);
//start again
echo date('h:i:s');
?>
echo date('h:i:s') . "<br />";
//sleep for 10 seconds
usleep(10000000);
//start again
echo date('h:i:s');
?>
The output of the code above will be something like this:
09:23:14
09:23:24
09:23:24
Complete PHP Misc Reference
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