international PHP2011_Jordi Boggiano_PHP Reset

PHP Reset
Jordi Boggiano @seldaek
http://nelm.io/

Jordi Boggiano Company http://nelm.io
http://twitter.com/seldaek Blog http://seld.be

Disclaimer
This is not about REST


About Me
Belgian living in Zürich
Weby stuff for 10 years
http://seld.be
Symfony2 core dev and other OSS contributions
http://github.com/Seldaek
Recently started Nelmio
http://nelm.io
We do Symfony2 & Frontend Performance consulting


Planning
Small Rant
New Frameworks & Libraries
GitHub Commercial Break
Best Practices
Composer
Wishful Thinking


A bit of history


PHP4 - 22-May-2000
01 class Foo_Bar_Baz
02 {
03 var $foo;
04
05 function Foo_Bar_Baz()
06 {
07 }
08
09 function bar()
10 {
11 }
12 }


PHP5 - 13-Jul-2004
01 class Foo_Bar_Baz
02 {
03 public $foo;
04
05 public function __construct()
06 {
07 }
08
09 private function bar()
10 {
11 }
12 }


Could you spot the differences?


Yet seven years later
~20% of servers still run PHP4

Source: @iliaa's PHP Advent article, December 2010.


PHP5.3 - 30-Jun-2009
01 namespace FooBar;
02
03 class Baz
04 {
05 public $foo;
06
08 {
09 }
10
11 private function bar()
12 {
13 }
14 }


Again, not much has changed.
But it changes everything.
BackslashMeansNoBackwardsCompatibility


We've been sitting on our asses
for too long.
It's time for a change.


New Frameworks


Symfony2
Lithium
Silex
ZF2
...
.


New Libraries


Assetic
Asset management & processing
Combine & Compress JS, CSS
Compile CoffeeScript, SASS, LESS, ..
Re-encode images
All on the fly with cache or pre-processed
Inspired by Python's WebAssets
Shipped with Symfony2
http://github.com/kriswallsmith/assetic


Doctrine2
DBAL, ORM, ODMs
Document stores (MongoDB, CouchDB,
PHPCR, XML)
Common interfaces allow for interop and
knowledge re-use
Propel2 builds on top of it
http://github.com/doctrine


Monolog
Logging
FingersCrossedHandler for production
Log to files, FirePHP, emails, etc.
Inspired by Python's Logbook
http://github.com/Seldaek/monolog


Twig
Template engine
Automatic escaping
Separation of concerns
(Readability)
Inspired by Python's Jinja2
http://github.com/fabpot/Twig


Gaufrette
Filesystem abstraction
Code once, store files anywhere
S3, Memory, FTP, Rackspace, ..
Transparently cache calls to slow backends
http://github.com/knplabs/Gaufrette


Snappy
Generates PDF/images from webpages
Uses wkhtmltopdf/wkhtmltoimage
Good example of a small single-purpose
library
http://github.com/knplabs/snappy


Imagine
Image manipulation
API that doesn't suck
Supports GD2, Imagick, Gmagick
Easily resize, crop, and more
Inspired by Python's PIL & others
http://github.com/avalanche123/Imagine


Buzz
HTTP requests
API that doesn't suck
Wraps around CURL
http://github.com/kriswallsmith/Buzz


Goutte
Web Crawler
Supports CSS3 selectors to extract content
Easily follow links, submit forms, etc.
Good example of code re-use (Sf2/ZF2
components)
http://github.com/fabpot/Goutte


I can't list them all.


GitHub


Git will hurt you
Read http://progit.org - it's free.


GitHub is your friend
No need to track down a developer's
email. Hit fork, create a branch, then send
a pull request
Push code, get immediate attention and
contributors
README.mdown in every repository
200 Symfony2 contributors, still in beta!


Best Practices


MIT License
Free as in free.


Autoload with PSR-0
01 // One class per file
02 // First bit should be a vendor name (your project, company, ..)
03 // This should sit in <project>/Nelmio/Bar/Baz.php
04 // WATCH THE CASE!
05
06 namespace NelmioBar;
07
08 class Baz
09 {
10 }

http://tinyurl.com/psr0-standard


PEAR-style Coding Standards
01 namespace FooBar;
02
03 class Baz
04 {
05 public $foo;
06
08 {
09 $stuff = array('Coding Style');
10 if (true) {
11 foreach ($stuff as $blob) {
12 echo "happy $blob!";
13 }
14 } else {
15 echo "dead kittens";
16 }
17 }
18 }

http://pear.php.net/manual/en/standards.php


Remember, kids, standards
are NOT about taste


Testing
Tests are always good, but for libraries
they're a must.
Typing phpunit in <project>/ is all I want
to know.


Composer


Package Management for PHP
Mostly inspired by npm and bundler
Advanced dependency resolving
Install project dependencies locally


Compose great things with small libraries
Rely on proven code to do common tasks
Simplify old APIs (e.g. Imagine, Buzz)


composer.json (lib)
01 {
02 "name": "Monolog",
03 "description": "Logging for PHP 5.3",
04 "keywords": ["log","logging"],
05 "homepage": "http://github.com/Seldaek/monolog",
06 "version": "1.0.0",
07 "license": "MIT",
08 "authors": [
09 {
10 "name": "Jordi Boggiano",
11 "email": "j.boggiano@seld.be",
12 "homepage": "http://seld.be"
13 }
14 ],
15 "require": {
16 "php": ">=5.3.0"
17 }
18 }


composer.json (project)
01 {
02 "repositories": {
03 "AwesomeLib": {
04 "git": "git://github.com/Jim/AwesomeLib.git"
05 },
06 "GreatLib": {
07 "git-bare": {
08 "url": "git://github.com/Bob/GreatLib.git",
09 "version": "1.0.0"
10 }
11 }
12 },
13 "require": {
14 "Twig": ">=1.0.0",
15 "AwesomeLib": "latest",
16 "GreatLib": "1.0.0",
17 "Monolog": "latest"
18 }
19 }


Demo, kind of.
(blame @naderman :)


Fear code re-use no more.


Last words


Namespace adoption, in effect,
opens up a world of
possibilities.


Open up your mind,
we're not alone.


Share your code
and collaborate.


Thank you.


Feedback please on:
http://joind.in/3489
Slides:
http://slides.seld.be
Contact me:
@seldaek || jordi@nelm.io


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