Online PHP editor | refs for QSnsZ

@ 2013-06-25T18:28:40Z

<?php

function grange($from, $to) {
    for ($i = $from; is_infinite($to) ?: $i <= $to; $i++) {
        yield $i;
    }
}

foreach (grange(1, "INF") as $element) {    
    if ($element >= 20) {
        break;
    }

    echo $element."\n";
}