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.
See Also
- sleep() - Delay execution
- usleep() - Delay execution in microseconds
- time_nanosleep() - Delay for a number of seconds and nanoseconds
- set_time_limit() - Limits the maximum execution time
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