1. The promise of asynchronous PHP Wim Godden Cu.be Solutions
@wimgtr 2. Who am I ? Wim Godden (@wimgtr) 3. Where I'm from 4.
Where I'm from 5. Where I'm from 6. Where I'm from 7. Where I'm
from 8. Where I'm from 9. My town 10. My town 11. Belgium the
traffic 12. Who am I ? Wim Godden (@wimgtr) Founder of Cu.be
Solutions (http://cu.be) Open Source developer since 1997 Developer
of OpenX, PHPCompatibility, PHPConsistent, ... Speaker at Open
Source conferences 13. Who are you ? Developers ? Ever worked with
asynchronous PHP libraries ? Node.JS ? 14. Synchronous processing
15. Asynchronous processing 16. Blocking I/O Disk reading/writing
Network reading/writing Communication with DB (with some
exceptions) Sending mail ... 17. Non-blocking = good Work on
multiple things at same time Not entirely sequential anymore How do
you know something is finished ? Events ! 18. Events Start Progress
update End (successfully) Failed 19. Callback hell
$one->do(function ($two) { $two->do(function ($three) {
$three->do(function ($stillcounting) {
$stillcounting->get(function() { throw new IQuitException(); });
}); }); }); 20. State of asynchronous PHP Several built-in
functions Several libraries (using the built-in functions) Facebook
Hack 21. Pthreads PECL extension Multithreading Requires zts
(thread-safe) 22. Pthreads class WebRequest extends Thread { public
$url; public $response; public function __construct($url){
$this->url = $url; } public function run() { $this->response
= file_get_contents($this->url); } } $request = new
WebRequest("http://cu.be"); if ($request->start()) { /* do some
work here */ $a = array_fill(0, 10000000, 'test'); for ($i = 0; $i
< count($a); $i++) {} /* ensure we have data */
$request->join(); var_dump($request->response); } 23.
pcntl_fork Clones PHP process Multiprocessing, not multithreading
No communication between processes No Apache 24. popen
child.php
