Async PHP (Sunshine)

PHP has emerged from it’s dark past; just in time to learn from the advances in event-based programming languages/platforms. As a result; there is vast, untapped potential in developing event-based, real-time applications. Utilising emerging open-source projects, PHP developers can join the party.

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1. async php
   

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2. thanks
   sunshine
   

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3. thanks
   silverstripe
   

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4. story 'me
   

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5. you can write
   async code
   

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6. spreading work to
   other threads
   

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7. forking
   

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8. $pid = pcntl_fork();
   if ($pid) {
   // you're in the parent process
   pcntl_waitpid($pid, $status, WUNTRACED);
   if ($status > 0) {
   // handle the error
   }
   } else {
   // do something in the child process
   if ($failed) {
   exit(1);
   }
   exit(0);
   }
   

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9. php.net/manual/en/book.pcntl.php
   

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10. leanpub.com/signalingphp
    

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11. threading
    

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12. class MyThread extends Thread
    {
    public $hasLicense = null;
    private $repository;
    public function __construct($repository)
    {
    $this->repository = escapeshellarg($repository);
    }
    public function run()
    {
    $folder = hash("sha256", $this->repository);
    exec("git clone " . $this->repository . " " . $folder);
    chdir(__DIR__ . "/" . $folder);
    $this->hasLicense = preg_grep("/^LICENSE/i", glob("*"));
    }
    }
    

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13. $thread = new MyThread("git@github.com:php/php-src.git");
    if ($thread->start()) {
    $thread->join();
    // do something with $thread->hasLicense
    }
    

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14. php.net/manual/en/book.pthreads.php
    

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15. pthreads.org
    

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16. spreading the work
    to other machines
    

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17. message queues
    

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18. $pheanstalk = new Pheanstalk\Pheanstalk("127.0.0.1");
    $pheanstalk->useTube("sunshine")->put("a message");
    // some time later...
    $message = $pheanstalk->watch("sunshine")->reserve();
    $pheanstalk->delete($message);
    

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19. $context = new ZMQContext();
    $socket = new ZMQSocket($context, ZMQ::SOCKET_PUSH);
    $socket->connect("tcp://127.0.0.1:5555");
    $socket->send("a message");
    // some time later
    $socket = new ZMQSocket($context, ZMQ::SOCKET_PULL);
    $socket->bind("tcp://127.0.0.1:5555");
    $message = $socket->recv();
    

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20. you can also use rabbit mq,
    amazon sqs, and iron mq
    

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21. gearman
    

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22. $client = new GearmanClient();
    $client->addServer("127.0.0.1", 4730);
    $client->setCompleteCallback(function(GearmanTask $task) {
    // so domething when the task is complete
    });
    $task = $client->addTask("inspect", "some data");
    $client->runTasks();
    

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23. $worker = new GearmanWorker();
    $worker->addServer("127.0.0.1", 4730);
    $worker->addFunction("inspect", function(GearmanJob $job) {
    // do the job, with $job->workload()
    });
    while ($worker->work()) {
    if ($worker->returnCode() !== GEARMAN_SUCCESS) {
    // something went wrong
    }
    }
    

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24. php.net/manual/en/book.gearman.php
    

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25. async standard library
    

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26. amphp, icicle, react...
    

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27. explicit event loops
    

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28. use Icicle\Http\Message\BasicResponse;
    use Icicle\Http\Message\Request;
    use Icicle\Http\Server\RequestHandler;
    use Icicle\Socket\Socket;
    use Icicle\Stream\MemorySink;
    class MyRequestHandler implements RequestHandler
    {
    public function onRequest(Request $request, Socket $socket): Generator
    {
    $stream = new MemorySink();
    yield from $stream->end("hello world");
    yield new BasicResponse(200, [
    "Content-Type" => "text/plain",
    "Content-Length" => $stream->getLength(),
    ], $stream);
    }
    public function onError(int $code, Socket $socket): Generator
    {
    yield new BasicResponse($code);
    }
    }
    

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29. use Icicle\Http\Server\Server;
    use Icicle\Loop;
    $server = new Server(new MyRequestHandler());
    $server->listen(81, "127.0.0.1");
    $server->listen(82, "127.0.0.1");
    Loop\run();
    

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30. server {
    listen 80;
    server_name acme.com;
    location / {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $http_host;
    proxy_pass http://127.0.0.1:81;
    }
    }
    

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31. use Icicle\Http\Message\Request;
    use Icicle\Http\Message\Response;
    use Icicle\Socket\Socket;
    use Icicle\WebSocket\Application;
    use Icicle\WebSocket\Connection;
    use Icicle\WebSocket\Message;
    class MyApplication implements Application
    {
    public function onHandshake(Response $response, Request $request, Socket $socket): Generator
    {
    yield $response;
    }
    public function onConnection(Connection $connection): Generator
    {
    $iterator = $connection->read()->getIterator();
    while (yield $iterator->isValid()) {
    // $iterator->getCurrent() + $connection->send(new Message())
    }
    $connection->close();
    }
    }
    

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32. use Icicle\Http\Message\BasicResponse;
    use Icicle\Http\Message\Request;
    use Icicle\Http\Server\RequestHandler;
    use Icicle\Socket\Socket;
    use Icicle\WebSocket\Application;
    use Icicle\WebSocket\Server\Server;
    class MyRequestHandler implements RequestHandler
    {
    private $application;
    public function __construct(Application $application)
    {
    $this->application = $application;
    }
    public function onRequest(Request $request, Socket $socket): Generator
    {
    yield $this->application;
    }
    public function onError($code, Socket $socket): Generator
    {
    yield new BasicResponse($code);
    }
    }
    $server = new Server(new MyRequestHandler(new MyApplication()));
    

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33. 1. corou'nes
    2. promises + observables
    3. streams
    4. filesystem
    5. dns
    6. threading + forking
    

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34. icicle.io/docs
    

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35. examples
    

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36. github.com/asyncphp
    

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37. why [i think] you should
    try async
    

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38. value for you
    

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39. value for the community
    

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40. I don't get why people can't deal
    with async environments. Cause, for
    me, it's like the dream.
    — @dead_lugosi
    

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41. want to know more
    about this stuff?
    

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42. assertchris.io/asyncphp
    

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43. If I said to you in 2000 that one day
    PHP would have any kind of strict
    mode, you would have laughed in
    my face.
    

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44. It isn't the year 2000 any more ... it's
    nature is, to a large degree, dictated
    by RFCs that pass the vote ...
    

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45. And while you will hear people use
    it's nature to argue against certain
    features, those voices aren't enough
    to stand in the way of progress.
    — @krakjoe
    

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46. joind.in/talk/84ad6
    

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47. thanks!
    twi$er.com/assertchris
    

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