Php/docs/function.sleep

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sleep

(PHP 4, PHP 5, PHP 7)

sleepDelay execution


Description

sleep ( int $seconds ) : int

Delays the program execution for the given number of seconds.


Parameters

seconds
Halt time in seconds.


Return Values

Returns zero on success, or FALSE on error.

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


Errors/Exceptions

If the specified number of seconds is negative, this function will generate a E_WARNING.


Examples

Example #1 sleep() example

<?php// current timeecho date('h:i:s') . "\n";// sleep for 10 secondssleep(10);// wake up !echo date('h:i:s') . "\n";?>

This example will output (after 10 seconds)


05:31:23
05:31:33

See Also