Integrating Node.js with PHP

 Integrating Node.js with PHP

1. 1. Integrating Node.js with PHP Lee Boynton PHPHants March 2013 Meetup
2. 2. So... WTF is Node.js?
3. 3. Server-side JavaScript
4. 4. Its single threaded...
5. 5. ...one process serves multiple clients
6. 6. Apache + mod_php Clients Webserver (Example borrowed from Marc Gears excellent server side scripting smack down)
7. 7. nginx + php-fpmStill pretty similar, there is a pool of available PHP processes
8. 8. Node.js Clients Webserver
9. 9. A simple Node.js webservervar http = require(http);http.createServer(function (req, res) { res.writeHead(200, {Content-Type:text/plain}); res.end(Hello Worldn);}).listen(1337, 127.0.0.1);console.log(Server running at http://127.0.0.1:1337/);
10. 10. Why should I use Node.js then?
11. 11. #1 Reason l33tness
12. 12. Use same language on the frontend and backend!
13. 13. Websockets!!!!
14. 14. Websockets● Persistent connection to server via web browser● Low latency● Bi-directional● Much better than XHR long polling (comet)
15. 15. The possibilities...● Games● News feeds● Chat● Real-time applications
16. 16. Awesome! Lets ditch PHP!Or use the right tool for the right job...
17. 17. Reasons to use PHP still● PHP works● Familiarity, maturity● Existing code in PHP● Node still in its infancy (created in 2009) ○ Not as many frameworks, libraries ○ May have to write more code for some basic things ○ APIs may change, not version 1.0 yet
18. 18. Oh yeah, the integrating part... Memcache/redis/ something else Session data Session data PHP Node
19. 19. However...Sessions are serialized by PHP:not|a:2:{i:0;s:4:"easy";i:1;a:1:{s:2:"to";s:5:"parse";}}Easier to parse JSON in Node.js:{"this": {"is": "easier"}}
20. 20. Use my session save handler...On Packagist: lboynton/memcached-json-session-save-handlerOr msgpack: https://github.com/msgpack/msgpack-php● ini_set(session.serialize_handler, msgpack)
21. 21. Quick example... (PHP) // create connection to memcached $memcached = new Memcached(); $memcached->addServer(localhost, 11211); // register handler (PHP 5.3 compatible) $handler = new LboySessionSaveHandler($memcached); session_set_save_handler( array($handler, open), array($handler, close), array($handler, read), array($handler, write), array($handler, destroy), array($handler, gc) ); register_shutdown_function(session_write_close); session_start(); // start using the session $_SESSION[serialisation] = this should be in json;
22. 22. Quick example... (Node.js)1. Get session ID from cookie2. Get session data out of memcached3. Use session data to identify client and send relevant info to their browserSee demo app...
23. 23. Conclusion...● Using Node is fun...● Good way to add real-time functionality to existing website● Can be used for much more
24. 24. Links● http://nodejs.org/● https://npmjs.org/● http://socket.io/● https://packagist. org/packages/lboynton/memcached-json- session-save-handler● https://github.com/msgpack/msgpack-php● https://github.com/msgpack/msgpack-node