Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Delay execution
sleep(int $seconds): int
        } elseif ($timeout === null) {



            
\sleep(PHP_INT_MAX);

        }



        return 
0;
        sleep(1);

        
$timers->add(new Timer(0.5, function () {

            
$this->fail("Timer shouldn't be called");

        }));