time_sleep_until

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

time_sleep_until — Make the script sleep until the specified time

Description

time_sleep_until(float $timestamp): bool

Makes the script sleep until the specified timestamp.

Parameters

timestamp: The timestamp when the script should wake.

Return Values

Returns true on success or false on failure.

Errors/Exceptions

If the specified timestamp is in the past, this function will generate a E_WARNING.

Examples

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(microtime(true)+0.2));

?>

Notes

Note: All signals will be delivered after the script wakes up.