(PHP 5 >= 5.1.0)
time_sleep_until — Make the script sleep until the specified time
Makes the script sleep until the specified timestamp .
The timestamp when the script should wake.
Geeft TRUE terug bij succes, FALSE indien er een fout is opgetreden.
If the specified timestamp is in the past, this function will generate a E_WARNING.
Example#1 A time_sleep_until() example
<?php
//returns false and generates a warning
var_dump(time_sleep_until(time()-1));
// may only work on faster computers, will sleep up to 0.2 seconds
var_dump(time_sleep_until(time()+0.2));
?>
Note: All signals will be delivered after the script wakes up.
Note: Deze functie is niet geïmplementeerd in de Windows versie van PHP.