MASTERING NAMESPACES!
Nick BelhommeSpetember 17, 2011 PFCongres
The Netherlands
Software Architect / Project Lead
Author of the Zend Framework 2.0 Cookbook
International Conference Speaker
Contributor to various Open Source Projects
Freelance PHP Consultant
www.nickbelhomme.com
@NickBelhomme
facebook.com/NickBelhommeFanPage
Freenode irc: NickBelhomme
WHO USES NAMESPACES
Other big programming languages support themIntroduced in PHP
5.3 Two years agoModern Next Gen Frameworks (Symfony 2.0, Zend
Framework 2.0 and others)Job market demands itUse it or loose
it
WHAT ARE THEY ?
Abstract container created to hold a logical grouping of unique
identifiers.Unique identifiers are names. (in practice: classes,
functions, constants)Each identifier is associated with the
namespace where it is defined.
Namespace Zend\Controller\Action
Namespace Zend\View
Namespace Nbe
HelperLoader
HelperBroker
HelperPriorityStack
E_ERROR
explode
HelperLoader
HelperBroker
PhpRenderer
Namespace
ArrayObject
explode
E_ERROR
ArrayObject
Abstract container created to hold a logical grouping of unique
identifiers.Unique identifiers are names. (in practice: classes,
functions, constants)Each identifier is associated with the
namespace where it is defined.
Namespace Zend\Controller\Action
Namespace Zend\View
Namespace Nbe
HelperLoader
HelperBroker
HelperPriorityStack
E_ERROR
explode
HelperLoader
HelperBroker
PhpRenderer
Namespace
ArrayObject
explode
E_ERROR
ArrayObject
Abstract container created to hold a logical grouping of unique
identifiers.Unique identifiers are names. (in practice: classes,
functions, constants)Each identifier is associated with the
namespace where it is defined.
Namespace Zend\Controller\Action
Namespace Zend\View
Namespace Nbe
HelperLoader
HelperBroker
HelperPriorityStack
E_ERROR
explode
HelperLoader
HelperBroker
PhpRenderer
Namespace
ArrayObject
explode
E_ERROR
ArrayObject
Abstract container created to hold a logical grouping of unique
identifiers.Unique identifiers are names. (in practice: classes,
functions, constants)Each identifier is associated with the
namespace where it is defined.
Namespace Zend\Controller\Action
Namespace Zend\View
Namespace Nbe
HelperLoader
HelperBroker
HelperPriorityStack
E_ERROR
explode
HelperLoader
HelperBroker
PhpRenderer
Namespace
ArrayObject
explode
E_ERROR
ArrayObject
Abstract container created to hold a logical grouping of unique
identifiers.Unique identifiers are names. (in practice: classes,
functions, constants)Each identifier is associated with the
namespace where it is defined.
Namespace Zend\Controller\Action
Namespace Zend\View
Namespace Nbe
HelperLoader
HelperBroker
HelperPriorityStack
E_ERROR
explode
HelperLoader
HelperBroker
PhpRenderer
Namespace
ArrayObject
explode
E_ERROR
ArrayObject
Namespace Separator
\
PEAR Naming Convention R.I.P.
No more clever workaround for lack of namespace support
No more very long function and class names
R.I.P. Poor man's namespacing
Welcome Readability
new Zend_Layout_Controller_Action_Helper_Layout()
class NbeZf_Model_User extends Nbe_Model_Abstract
new Zend_Layout_Controller_Action_Helper_Layout()new
Layout()
class NbeZf_Model_User extends Nbe_Model_Abstractclass User
extends AbstractModel
100% PURE NAMESPACESNo supplements Pure Power
The container space is created per file at the absolute top
Coming to an end, but first someTimeline changes
PHP4 class constructor has the same name as the class
> PHP5 class constructor is __construct but accepts PHP4
convention
>5.3 namespaces are introduced, nothing changes
>= 5.3.3 Backward compatibility change. Only __construct is
now regarded asthe constructor for namespaced code.
And a quick recap on WHY
Readability
Dependencies can be indicated easily
System functions and constants can be overwritten
It is the future, evolve with the language or loose it
The market will soon require the namespace skill
And some cool resources
The PHP manual http://www.php.net/namespaces
Ralph Schindlers namespace convert
toolhttps://github.com/ralphschindler/PHPTools
Plus comments on it by Cal
Evanshttp://blog.calevans.com/2010/03/27/zends-new-namespace-converter/
Google: php
namespaceshttp://www.google.be/search?q=php+namespaces
Zend Framework 2.0
Cookbookhttp://blog.nickbelhomme.com/php/zend-framework-2-0-cookbook_324
And we reached the end,Any questions?
The End!
THANK YOU
[email protected]
Slideshare, Twitter, IRC: NickBelhomme
http://blog.nickbelhomme.com
Photo Credits
Photos rights reserved bySweetie187
,webtreats,royblumenthal,Brad
montgomery,ktylerconk,vegetarians-dominate-meat-eaters-01,endless
lazlo,DebilzBG,J. Star,quadrant6ix,notemilytaken from
Flickr.com
