The promise of asynchronous PHP
Wim GoddenCu.be Solutions@wimgtr
Who am I ?
Wim Godden (@wimgtr)
Where I'm from
Where I'm from
Where I'm from
Where I'm from
Where I'm from
Where I'm from
My town
My town
Belgium the traffic
Who am I ?
Wim Godden (@wimgtr)
Founder of Cu.be Solutions (http://cu.be)
Open Source developer since 1997
Developer of PHPCompatibility, OpenX, PHPConsistent, ...
Speaker at Open Source conferences
Who are you ?
Developers ?
Ever worked with asynchronous PHP libraries ?
Node.JS ?
Synchronous processing
InsertorderCheckpaymentUpdatestockFedexAPISendmailThankyoupage
Asynchronous processing
InsertorderCheckpaymentUpdatestockFedexAPISendmailThankyoupage
Blocking I/O
Disk reading/writing
Network reading/writing
Communication with DB (with some exceptions)
Sending mail
...
Non-blocking = good
Work on multiple things at same time
Not entirely sequential anymore
How do you know something is finished ? Events !
Events
Start
Progress update
End (successfully)
Failed
Callback hell
$one->do(function ($two) { $two->do(function ($three) {
$three->do(function ($stillcounting) {
$stillcounting->get(function() { throw new IQuitException(); });
}); });});
State of asynchronous PHP
Several built-in functions
Several libraries (using the built-in functions)
Facebook Hack
Pthreads
PECL extension
Multithreading
Requires zts (thread-safe)
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); }}
$request = new WebRequest("https://cu.be");
if ($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(); echo
$request->response;}
pcntl_fork
Forks PHP process
Multiprocessing, not multithreading
No communication between processes
No Apache
popen
child.php
