Asynchronous programming is the one of most interesting technique for PHP. You can find a lot of interesting in this talk: one-way calls, threads, processes, signals.

1. Asynchronous PHP
Myth? Reality!
Alexander Lisachenko,
Head of Sowtware Architecture at Alpari (RU)

2. About me

3. About me

4. Technology Evolution

5. Technology Evolution

6. What should we expect
in the nearest future?

7. Technology trends

8. PHP World

9. Simple example
What if
sharding?
What if
unavailable?
Highload?

10. Blocking IO

11. What is the solution?

12. Asynchronous PHP

13. One-way SOAP call

14. One-way SOAP call
No output is defined for the
operation

15. One-way SOAP call
Works only in WSDL-mode, so need an WSDL
(Zend_AutoDiscover):
Only “input” part is defined
for one-way call

16. One-way SOAP call – client side

17. CLI tools

18. Processes

19. Processes. Elementary

20. Processes. Intermediate
Non-blocking stream, we can
query it later asynchronously
with stream_select()

21. Processes. Intermediate
stream_select()
goodness
POSIX signals

22. Processes. POSIX signals

23. Processes. POSIX signals

24. Signal handling issue in the code
PHP will hang until loop is
finished and will ignore signals

25. Asynchronous signal handling
Enable support for tick
handler and async signal
handling.

26. Asynchronous PHP. Enterprise way.

27. Asynchronous PHP. Enterprise way.
PHP App1PHP App1
PHP App2PHP App2
PHP App3PHP App3
PHP App4PHP App4
PHP App5PHP App5
PHP App6PHP App6
STOMP,
WebSocket,
AMQP
Publishers Subscribers

28. Asynchronous PHP. Enterprise way.

29. Asynchronous PHP. Enterprise way.

30. Asynchronous data access in PHP

31. Asynchronous data access in PHP
Like typical
stream_select() call

32. Asynchronous PHP. Cutting-edge.

33. Asynchronous PHP. Cutting-edge.
True threads in PHP!
Just call a function in
the separate thread
Thread
syncrhronization

34. Asynchronous PHP. Cutting-edge.
yields a thread-
coroutine

35. Asynchronous PHP. Cutting-edge.

36. Threaded asynchronous socket server
Non-blocking server
Effective epoll() loop
in libevent
Our threaded server

37. Threaded asynchronous socket server
Non-blocking
connection

38. Threaded asynchronous socket server
Separate loop for each
connection
Each connection is
handled in separate
thread

39. Thanks! Questions?
Alexander Lisachenko
Twitter: https://twitter.com/lisachenko
Github: https://github.com/lisachenko