sleep

sleep

Delay execution

int **sleep** int $seconds

Delays the program execution for the given number of . seconds

Opmerking: > In order to delay program execution for a fraction of a second, use as the function expects an integer. For example, will pause program execution for seconds. usleep``sleep``sleep(0.25)``0

seconds Halt time in seconds (must be greater than or equal to ). 0

Returns zero on success.

If the call was interrupted by a signal, returns a non-zero value. On Windows, this value will always be (the value of the constant within the Windows API). On other platforms, the return value will be the number of seconds left to sleep. sleep``192``WAIT_IO_COMPLETION

If the specified number of is negative, this function will throw a . seconds``ValueError

Voorbeeld: example

<?php

// current time
echo date('h:i:s') . "\n";

// sleep for 10 seconds
sleep(10);

// wake up !
echo date('h:i:s') . "\n";

?>

This example will output (after 10 seconds)

05:31:23
05:31:33

usleep``time_nanosleep``time_sleep_until``set_time_limit