The sleep() function delays execution of the current script for short time period.
Syntax
sleep(sec)
Parameters
sec− The number of seconds to delay the script.
Return
The sleep() function returns zero on success.
Example
<?php
echo date('h:i:s') . "<br>";
// wait for 10 seconds
sleep(10);
echo date('h:i:s') . "<br>";
// wait for 5 seconds
sleep(5);
echo date('h:i:s');
?>Output
The following is the output.
02:54:50 02:54:52 02:54:57