1. PHP Frameworks, Libraries & Tools
BarCamp Rhein Main 2013
Lukas Rosenstock

2. Overview
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PHP 5.3: Namespaces, Autoloading and PSR-0
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Composer & Packagist Dependency Manager
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Silex Microframework & symfony components
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Twig Template Engine
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Guzzle HTTP Library
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Doctrine Object-Relational-Mapper

3. PHP 5.3
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Namespace declaration:
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namespace LukasRosenstockEvents;
class BarCamp { }
Use classes:
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or
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use LukasRosenstockEventsBarCamp;
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$bcrm13 = new LukasRosenstockEventsBarCamp;
$bcrm13 = new BarCamp;
PSR0 Guideline: namespace = path
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/LukasRosenstock/Events/BarCamp.php
Autoloading → magic 'require' when needed

4. Composer & Packagist
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Per-project dependency management for
frameworks, libraries etc.
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Command-line tool composer.phar
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Dependencies are not included in project repository
composer install
JSON configuration files composer.json for
each package
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Public package names → http://packagist.org/
Custom repositories and downloads
http://getcomposer.org/

5. Silex Microframework
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Microframework = single PHP file for multiple
URL patterns
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Good for RESTful APIs
Requires URL rewriting in webserver
Implementation with closures
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$app->get('/event/{id}', function($id) { return 'You
have requested event '.$id; });
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$app->post('/event/{id}', function($id, Request $r) {
return 'Event updated with '.$r->getContent(); });
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$app = new SilexApplication;
$app->run();
http://silex.sensiolabs.org/

6. Twig Template Engine
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Separation logic and view
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Frontend developers should not write PHP
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Twig has own syntax for conditions, loops etc.
Template:
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<h1>Event {{name}}</h1>
{% if is_today %}<p>Happening today.</p>{% endif %}
PHP Code:
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$twig = new Twig_Environment(new
Twig_Loader_Filesystem('/views'));
Return $twig->render('event.twig.html', array('name'
=> $event->getName(), 'is_today' => $event>getDate()==$now);
http://twig.sensiolabs.org/

7. Guzzle HTTP Library
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OOP abstraction layer for libcurl
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Extendable with plugins
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Service definitions for webservice API clients
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Amazon WebServices PHP SDK
Example:
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$client->setDefaultHeaders(array('Authorization' =>
'Bearer '.$accessToken));
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$response = $client->get('/event/bcrm13')->send();
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$client = new
GuzzleHttpClient('http://api.example.com/');
$eventData = $response->json();
http://guzzlephp.org/

8. Doctrine Object-Relational-Mapper
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1 SQL table = 1 PHP class
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Mapping of fields and relations defined with
annotations (comments) or in external configuration
files
Sample fields:
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/** @Column(type="string") **/ private $name;
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/** @Id @Column(type="integer") **/ private $id;
/** @OneToOne(targetEntity="User") **/ private
$organizer;
Creating Entity:
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$event = new LukasRosenstockEventsBarCamp;
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$em->persist($event); // em = EntityManager
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$em->flush();

9. Doctrine Object-Relational-Mapper
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Fetching Entity:
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$event = $em>getRepository('LukasRosenstockEventsBarCamp')>findOneById(1);
Modifying Entity:
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$event->setOrganizer($user);
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$user = new LukasRosenstockEventsOrganizer;
$em->flush();
http://www.doctrine-project.org/

10. Thank you!
Questions?!