gistfile1.aw

<?php

$loop = EventLoop::getDefaultLoop();

function doSomething()
{
    global $loop;
    
    // Create a recurring timer
    $timer = new TimerEvent(..., 1, 1);
    $loop->start($timer);

    if(/* some failure */)
    {
        throw new Exception();
    }
    
    $stop = new TimerEvent(function() use($timer)
    {
        $timer->stop();
    }, 30);
    
    $loop->add($stop)
    
    return $stop;
}

$timer = doSomething();

// ... more code

$timer->invoke();