$stream->write('Message 4');
(yield '2 messages written');
$stream->write('Message 5');
$stream->write('Message 6');
(yield '2 messages written');
}
function reader(InputStream $stream)
{
foreach ($stream as $line) {
if (strlen($line)) {
(yield $line);
} else {
$stream->close();
}
}
}
$stream = new InputStream();
$queue[] = writer($stream);
$queue[] = reader($stream);
while (true) {
$continue = array_reduce($queue, function ($result, Iterator $queueItem) {
if ($valid = $queueItem->valid()) {
echo $queueItem->current() . PHP_EOL;
$queueItem->next();
}
return $result || $valid;
}, false);
if (!$continue) {
break;
}
}
$l += 13;
} else {
$l++;
}
} else {
//->gerade
if ($a < 4) {
$l += 12;
} else {
$l += (23 - 3 * 8) * $op;
}
$a += $op;
}
}
//Kehrung
$l = 0;
while (isset($string[$l])) {
$string[$l] = strtolower($string[$l]);
$l++;
}
$l--;
$string[$l] = strtoupper($string[$l]);
while (isset($string[$l])) {
$returnstring .= $string[$l];
$l--;
}
// omg:
return $returnstring;
}
echo writer();