PHP 함수의 동시 프로그래밍 기능 향상

function task1() {
    for ($i = 0; $i < 10000; $i++) {
        yield $i;
    }
}

function task2() {
    for ($i = 10000; $i < 20000; $i++) {
        yield $i;
    }
}

$scheduler = new CoroutineScheduler;
$scheduler->schedule(task1());
$scheduler->schedule(task2());
$scheduler->run();

function fibonacci() {
    $a = 0;
    $b = 1;
    while (true) {
        yield $a;
        $temp = $a;
        $a = $b;
        $b = $temp + $b;
    }
}

$generator = fibonacci();
for ($i = 0; $i < 10; $i++) {
    echo $generator->current() . "\n";
    $generator->next();
}

function analyze(string $url): Promise {
    return new Promise(function(callable $resolve) use ($url) {
        $client = new GuzzleHttp\Client;
        $client->getAsync($url)->then(function (Response $response) use ($resolve) {
            $resolve(analyzeResponse($response));
        });
    });
}

$urls = ['http://example.com', 'http://example.org'];
$promises = [];
foreach ($urls as $url) {
    $promises[] = analyze($url);
}

All::settle($promises)->then(function (array $results) {
    foreach ($results as $result) {
        handleResult($result->value);
    }
});