PHP was added to the languages offered by Google App Engine about a year ago. This session will focus on porting an existing app on gae. We’ll start talking about the main characteristics of the app engine platform, which kind of services are available (persistence, storage, queue and so on) and how to use it. Then the PHP installation of app engine will be discussed, highlighting implementation choices and limitations. The second part of the talk will go into implementation details, in particular about tweaks needed to run an existing app on gae e.g: how a session is managed, logging is performed and how to interact with the file system not forgetting about deploy.

1. Deploy !
a PHP Application!
on Google App Engine

2. Who am I?
Michele Orselli!
CTO@Ideato!
!
@_orso_!
mo@ideato.it

3. https://developers.google.com/events/io/sessions/333055646
PHP for App Engine

4. Platform as A Service (PaaS)!
Build, deploy & scale!
Don’t care about infrastructure
https://appengine.google.com/
https://developers.google.com/appengine/
The GAE platform

5. All PaaS have limitations!
PHP is in preview phase!
Not all services are available
https://developers.google.com/appengine/features
Google App Engine: services

6. Google Cloud Sql !
Memcache!
Google Cloud Storage
Google App Engine: data storage

7. Email (internal or SendGrid)!
Twilio!
UrlFetch
Google App Engine: ext services

8. TaskQueue!
Cron
Google App Engine: offline work

9. User Auth!
Application Identity
Google App Engine: auth

10. PHP on GAE

11. PHP 5.4!
Runs in a sandbox
https://developers.google.com/appengine/docs/php/
PHP on GAE

12. Some well-know extension are
disabled: imagick, intl, pcntl, curl
PHP on GAE

13. Some well-know extension are
disabled: imagick, intl, pcntl, curl
PHP on GAE
whaaat?

14. Some function are disabled!
permanently: exec, tmpfile!
partially: /e on preg_replace!
softly: gc_*, parse_str
PHP on GAE

15. File System is Read only: you can
store files on Cloud Storage or
external services
PHP on GAE

16. PHP on GAE

17. How to invoke external services
(no curl remember? :-P)
PHP on GAE

18. PHP on GAE

19. Dynamic response max 32 MB!
Timeout on long response
PHP on GAE

20. Sessions are stored on Memcache !
session_*, $_SESSION work as expected!
use session_set_save_handler to change
handler
PHP on GAE

21. Log are managed via syslog!
use PHP’s native syslog function!
use custom logging lib (eg. Monolog)
PHP on GAE

22. PHP on GAE: DB

23. PHP on GAE: sending mails

24. get the sdk!
requirements: python 2.7, php-cgi, mysql?!
local web server
wget https://storage.googleapis.com/appengine-sdks/featured/google_appengine_1.9.4.zip
App Engine SDK

25. # app.yaml
application: propane-forge-391
version: 1
runtime: php
api_version: 1
threadsafe: true
Base Config

26. # app.yaml
application: propane-forge-391
version: 2
runtime: php
api_version: 1
threadsafe: true
Base Config

27. # app.yaml — continued
handlers:
- url: /css
static_dir: web/css
- url: /js
static_dir: web/js
- url: .*
script: web/index.php
Base Config

28. # php.ini
google_app_engine.enable_functions = “…”
Base Config

29. !
dev_appserver.py --php_executable_path=/usr/bin/php-cgi /
var/www/todo/ --host=gae.dev
Test Locally

30. !
dev_appserver.py --php_executable_path=/usr/bin/php-cgi /
var/www/todo/
Test Locally

31. !
Deploy
appcgf.py update /var/www/todo/!
(or git push)

32. https://github.com/ideatosrl/silex-todo-gae
A kitchen sink app

33. Execute offline work!
Expose endpoint(s) doing the work
PHP on GAE: task queues

34. # queue.yaml
PHP on GAE: task queues

35. PHP on GAE: task queues

36. PHP on GAE: task queues

37. # app.yaml
PHP on GAE: task queues

38. Schedule repetitive tasks!
Expose endpoint(s) doing the work
PHP on GAE: cronjobs

39. # cron.yaml
PHP on GAE: cronjobs

40. # app.yaml
PHP on GAE: cronjobs

41. PHP on GAE: users

42. PHP on GAE: modules

43. integration is quite smooth for simple apps!
!
some few common pattern
what we learned

44. !
apply to cloud.google.com/starterpack and get $ 500!
wanna try?

45. Thank you!
@_orso_ mo@ideato.it
feedback please! https://joind.in/11804
That’s all folks