Dutch PHP Conference 2007

1. Zend Framework
PHP Powers the Web
Gaylord Aulke
Director Prof. Services, DACH
Zend Technologies, Germany

2. Frameworks in other Areas
Playmobil LEGO Fischer-Technik

3. PHP Frameworks
Quelle: http://www.coldscripts.com/PHP/Scripts/Development/Frameworks/

4. Why Yet Another Framework?
• Keep PHP competitive among other technologies
including .NET , Spring, Ruby-on-Rails, etc.
• No framework today supports Extreme Simplicity
• Provide “clean” IP to enable commercial use
• Structured development process will lead to uniform and
high-quality code base
• Take full advantage of PHP 5

5. PHP Collaboration Project
PHP
PHP
Community
Community Framework
Framework
Best
Best
Practices
Practices PHP Open
Open
Language Source
Source
SOA,
Open
Open
Web Services,
etc. IDE
IDE
19-Jun-07 | Page 5

6. Zend Framework
Zend Framework provides a high-quality open-
source framework for developing Web
Applications and Web Services.
By following the PHP spirit, the Zend Framework
delivers easy-to-use and powerful functionality,
focusing on the challenges of building robust,
secure and modern Web applications.
19-Jun-07 | Page 6

7. Framework Principles
• Keep it “extremely simple” – stick to 20%/80%
rule and compensate by:
Extensibility
Use-at-will architecture
Configuration-less
• Cherry pick best-of-breed ideas
• Showcase current trends in Web development
(Web Services, Ajax, Search, Syndication, …)
• Document development with use-cases
• Only high quality and necessary components
• Friendly license (BSD license)
Contributors agree to contributor’s license agreement
19-Jun-07 | Page 7

8. • High-quality PHP 5 open-source
framework
• Easy-to-use, powerful
functionality, focusing on the best
practices of robust, secure and
modern Web applications.
• Follows principle of “extreme
simplicity,” which makes it easy
to learn and easy to use for
programmers
• Developed by members of the
PHP community, led by a team at
Zend
• Open-source process, hosted at
framework.zend.com under the
business-friendly BSD license
• Corporate contributions:
19-Jun-07 | Page 8

9. More facts…
• PHP 5 class library
• Free, open source, BSD license (like PHP)
• 140,000 lines of code
• Emphasis on quality: 60%+ unit test coverage
• Solutions are “extremely simple” – solving the
80% usage case, and allowing for extensibility
• Bundled with Zend Core & Zend Studio
• http://framework.zend.com/

10. Large contributing community (approx. 160)
19-Jun-07 | Page 10

11. Zend Framework on Google’s Web site
19-Jun-07 | Page 11

12. IBM runs on Zend Framework
• QEDWiki built on Zend Framework
• IBM contributing to Zend Framework (Ajax,
Search, DB2, etc…)
• Shipping with Zend Core for IBM and Zend Core
for i5/OS
19-Jun-07 | Page 12

13. Zend Framework 1.0
• Release Candidate in May, release planned for
June
• Lining up customers/partners for press incl. IBM,
Google, Varien
• Components designed by small teams
• Proposals written and reviewed before coding
• All code starts from scratch
• Real Life Tests
19-Jun-07 | Page 13

14. Zend Framework Components
19-Jun-07 | Page 14

15. Coding Standards
B.2. PHP File Formatting B.4. Coding Style
B.2.1. General B.4.1. PHP Code Demarcation
B.2.2. Indentation B.4.2. Strings
B.2.3. Maximum Line B.4.3. Arrays
Length B.4.4. Classes
B.2.4. Line Termination B.4.5. Functions and Methods
B.4.6. Control Statements
B.4.7. Inline Documentation
B.3. Naming Conventions
B.3.1. Classes
B.3.2. Interfaces
B.3.3. Filenames
B.3.4. Functions and
Methods
B.3.5. Variables
B.3.6. Constants
19-Jun-07 | Page 15

16. Standard Directory Stucture
19-Jun-07 | Page 16

17. URL Rewriting
• “Pretty URLs”
• First element: Controller-Name
• Second element: Action-Name
• Followed by Key/Value Pairs with Parameters
http://www.myserver.com/event/detail/id/10
Controller: EventController
Action: detailAction
Parameter: id=10
19-Jun-07 | Page 17

18. Model / View / Controller
Index.php
*.phtml

19. Bootstrap File: index.php
• Handles all (dynamic) requests
• Sets up environment and calls controller
19-Jun-07 | Page 19

20. ActionController: IndexController.php
19-Jun-07 | Page 20

21. Model: HRModel.php
19-Jun-07 | Page 21

22. View Script: Index.phtml
19-Jun-07 | Page 22

23. MVC Advantages
• User Interaction Handling isolated in the
Controller Actions
• Layout isolated in the View Scripts
• Business Logic Encapsulated by the Model
• This gives clear separation of responsibilities of
the different classes
• Extensions might structure the business logic
better
• Template engine can be integrated into view
• Example: ZGS Classes
19-Jun-07 | Page 23

24. DB-Adapter: Query

25. DB-Table

26. DB-Table: insert

27. DB-Table: update

28. Code: Feed
• SOA & Web Services:
Zend Framework has a large focus on Web Services
• Zend_Feed, Zend_Service_*

29. Webservice Clients

30. Future Plans
• Provide additional features for PDF generation
and support of the latest PDF standard
• Enhance AJAX & forms support toward
graduation from the incubator
• Provide plug-ins for Controller architecture.
• Build a higher-level abstraction on top of
Zend_Search_Lucene (i.e., Zend_Search) that will
allow for a pluggable interface to other search
solutions
• Enhance the MIME module to also support
decomposing existing MIME messages
19-Jun-07 | Page 30

31. Currently ongoing Ajax-related work
• Zend_Json
Part of Zend Framework
Works both with fast ext/json and pure PHP-based
implementation (automatically chooses best)
Can decode to PHP array or object
Can work with primitive types
• Zend_Xml2Json
Enables XML-to-JSON conversion at the middleware server
layer
Delivers simplicity to the front-end developer
To be contributed by IBM Research based on paper on
DeveloperWorks:
• http://www-128.ibm.com/developerworks/xml/library/x-
xml2jsonphp/

32. Zend Component Model
What?
Tooling for building AJAX applications
How?
Building blocks model – a-la VB/ASP/JSF
Why?
RAD in PHP spirit – simplicity + power

33. What are components?
• PHP+JS+CSS+Images client/server side bundle
• Self-describing components – can be used with
any tool
• Visual RAD
design time view – no data required
production view - reflects actual data
• Vi-compatibility – no additional configurations or
declarative syntax files, only PHP and CSS/JS on
client side
• Extensibility – new components, extending
existing components

34. Z End