Professional PHP - an open-source alternative for enterprise development

Professional PHP
an open-source alternative for enterprise development
Thijs Feryn Felix De Vliegher 24/10/’08, Katho Kortrijk

About us
Thijs Feryn
Support manager & senior developer at COMBELL
PHP developer for about 5 years
Zend PHP5, certified engineer
Felix De Vliegher
Senior developer & sysadmin at COMBELL
PHP developer for about 7 years
Zend PHP5, Zend Framework certified engineer
Co-founder PHPBelgium
Contributor to the PHP project

About COMBELL
Founded in 1999
30 FTE and growing
+25 000 customers
Premium / Quality hosting segment
Leading hosting provider in Belgium concerning hosting & domain names in the SME market
+ 60 000 domain names
+ 20 000 websites
+ 600 servers, owned & managed by COMBELL
+ 400 resellers

You?
Experience with programming
Experience with PHP
Experience with PHP based applications
OOP in PHP?
Professional experience? (read: not katho)

Open source software
Development methodology
Source code is available
Use, change, improve
Collaborative
Common licenses: GPL, LGPL, MIT
Free “as in beer”

LAMP stack
First used in c't magazine in 1998
Linux, Apache, MySQL and PHP
Open-source, free software
Available everywhere
Proven track record
Application PHP Apache MySQL Linux

Why PHP?
Easy to learn

Why PHP?
Flexible in webserver environment
Platform independent
Lots of libraries, frameworks
Huge community
Code is freely available
Documentation
Commercial support
Short TTM

PHP vs other languages
Dynamically typed
Low entry barrier
Stateless
Platform independence (vs .NET)
Interpreted language
Extensions and libraries
Built-in
Pecl
Pear
(let’s say Java?)

PHP is community friendly

PHP is community friendly
Lots of PHP conferences / PHP UG’s
Initiatives to contribute and learn
Active and friendly support:
forums
irc
twitter

Shiny statistics (sort of) PHP 4 Yahoo goes PHP PHP 5 IBM & Oracle endorse PHP Microsoft endorses PHP PHP 6?

PHP Applications

Used by

COMBELL customers using PHP

Support by

PHP in the enterprise Evolution from a functional approach to enterprise fundamentals

The fundamentals

Functionality
Language choice based on features
Often the first and only concern
Evolution towards:
Frameworks
Testing & debugging

PHP Frameworks
Eases development
More structure
Glue (component) vs full-stack
DRY
No maintenance
Extend or plugin where needed

PHP Frameworks
Zend Framework
Component library and framework
Symfony
Full stack framework
eZ Components
Component library
Loosely coupled
Code Igniter
Fast web application framework

Security 1: Thou shalt filter input and escape output

Security
php.ini settings
Areas of importance:
Form processing
Databases
Sessions
Error handling / reporting
Suhoshin / SAPI filter

Performance
Micro optimizations?
No premature optimization!
Caching
Opcode caching
{Page|Database|Module|...} caching
Database
Optimized database design
Indexing strategy
Writing good SQL

Performance
Profiling: optimizing code
Optimalization of PHP as a language

Scalability
Shared nothing: independent and self-sufficient
Design patterns - MVC
Database scaling - sharding
Development methodologies - agile, scrum
Version control
Documentation!

Testing I pity the fool who doesn’t write tests!

Testing
More testing == less debugging!
Applications should work as expected
Actually takes less time
Provides higher quality
Easier to refactor and change
Makes confident developers

Testing and coverage

PHP Tools and utilities
Editors
Eclipse PDT - http://www.eclipse.org/pdt/
Zend Studio - http://www.zend.com/studio
Continuous Integration
phpUnderControl - http://www.phpunit.de
Debuggers / Profilers
Xdebug - http://www.xdebug.org
Testing tools
PHPUnit - http://www.phpunit.info
Selenium - http://selenium-ide.openqa.org/

Certifications
Zend PHP 5 certification
Zend Framework Certification
Why:
Differentiate yourself when looking for a job
Get listed in Zend Yellow Pages
Confirmation of a decent PHP skillset

PHPBelgium user group
Point of information for PHP
For developers, education, businesses
Bi-monthly meetings (with a drink)
Organizing PHP-related events
PHP Bug Hunt Day
http://www.phpbelgium.be | http://bughuntday.org

Learn more about PHP
Books:
All of php|architect
Power PHP 5 programming
Advanced PHP Programming
Magazines:
php|architect magazine

Learn more about PHP
Websites:
http://www.phpdeveloper.org
http://devzone.zend.com
http://planet-php.org
IRC (irc.freenode.net):
#phpc, ##php, #php_bnl
Training:
PHP|Architect
Ibuildings (http://www.ibuildings.nl)

Applied at COMBELL
Service oriented architecture
Highly integrated with hosted solutions
Using Zend Framework, Symfony
Development workflow with:
Subversion
Unit testing
Continuous integration (Cruisecontrol)

Others are hiring too
PHP is becoming big in enterprises
Valid career choice, not everything needs to be done with Java or .NET
PHP Engineers are in high demand!

If our presentation were a book

Thanks!
Any questions?
More info:
[email_address]
[email_address]

Professional PHP - an open-source alternative for enterprise development

by Felix De Vliegher

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