PHP 5.3, a walkthrough

PHP 5.3
A Walkthrough
@davidcoallier

Dé Luain 20 Meán Fómhair 2010

Who are you?
Experiences, usage, etc.


Who am I?
Work, experiences, usage, etc.


The Talk!
Recap of why you are here...


A small PHP 6
Oh no, you didn’t!


In a nutshell
mysqlnd, phar, syntax, sqlite3, spl-sauce, speed, etc.


ext/intl
Internationalization Extension


Collator
string comparison, sorting, locale


Numbers...
1,000,000; 1.000.000; 1 000 000


ICU
☕ ♿⚛


More Importantly


LSB
Late Static Binding, wtf is that?


NAMESPACES


NAMESPACES!!!!


Closures & λs


Late-Static Bindingself:: vs static::, what’s that? LSB?


class Base {
public static function who() {
echo __CLASS__;
}

public static function foo() {
self::who();
}
}

class Child extends Base {
echo __CLASS__;
}
}

Child::foo(); // Echoes Base

class Base {
echo __CLASS__;
}

public static function foo() {
static::who();
}
}

class Child extends Base {
echo __CLASS__;
}
}

Child::foo(); // Echoes Child

$this is not static::
Don’t get tricked, no inheritance


Object Lifecycle
Create, Immute, Memoize


Referencial Transparency It’s not maths, it’s software.


ZzzZz.....


Dynamic Statics
Oh that sounds nasty...


$class = 'ClassName';
$method = 'methodName';

$class::$method(...);


Remember __call?


__callStatic()


Enough Statics..
Moving on.


Namespaces
So we have namespaces, now what?


Get over it.
We know.


Organize
Structural decisions, maintainability


namespace pearpackage;
class Example {
// ...
}


use pearpackage;
$class = new Example();
// or
$class = new pearpackageExample();


Meaning
And community signiﬁcance


The culprit
strlen


Coding Standards
http://groups.google.com/group/php-standards/web/psr-0-ﬁnal-proposal


Phar
The jar-like PHP Archives


include 'phar://package.phar/index.php';


$phar = new Phar('drupal7.phar');
$phar->buildFromDirectory(__DIR__ . '/drupal7');
$phar->setStub("<?php
Phar::interceptFileFuncs();
Phar::webPhar();
__HALT_COMPILER(); ?>"


RewriteRule ^(.*)$ /drupal7.phar/$1 [QSA,L]


Running, web-ing
Phar magic-happy-times.


λ (Lambda)
Assigned to a variable


$name = function() {
return 'david';
};


Closure
functions with bound variables


Sto
len
Fro
m
$names = array( NA
'Nate Abele', 'David Coallier', 'Cap'n Crunch' TE
);
!
$split = array_map(
function($name) {
list($first, $last) = explode(' ', $name);
return compact('first', 'last');
},
$names
);
// Result:
array(
array('first' => 'Nate', 'last' => 'Abele'),
array('first' => 'David', 'last' => 'Coallier'),
array('first' => 'Cap'n', 'last' => 'Crunch')
)


$names = array('david', 'nate');
$friends = array('helgi', 'joel');

$split = function($name) use ($friends) {
//...
};


Functors :O


class Name {
public function __invoke() {
return 'david';
}
}

echo $name();


Other things?
SPL, changes, NOWDOCS, etc


Fast Ternaries
No need to check anymore... Beware


$name = isset($_GET['name']) ? $_GET['name'] : 'No Name';


$name = $_GET['name'] ?: 'No Name';


NOWDOCS
NOWDOCS cooler than HEREDOCS


$name = 'david';
$example =<<<RTFM
Hello $name,
See you soon.
RTFM;
// Hello David


$name = 'david';
$example =<<<'RTFM'
Hello $name,
See you soon.
RTFM;
// Hello $name

Performance
Better faster strong. Better stack


Garbage Collection gc_enable(), gc_disable(), etc.


__DIR__
dirname(__FILE__)


__NAMESPACE__


namespace pearpackageExample2 {
const TEST = 'In Namespaces...';
function foo() {
echo __NAMESPACE__;
}
}

echo pearpackageExample2::TEST; // In Namespaces...
pearpackageExample2foo(); // Example2


E_DEPRECATED


MySQLnd
Native MySQL Driver, faster, stats, self-contained


DateTime
Crazy amazing dates handling


$datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);

echo $interval->format('%R%d days');

// +2 days


SPL
Iterators, Iterators, Iterators.


SPL
Datastructures, Exceptions, Misc...


My Favourite


PHP FPM
Alternate FastCGI Implementation 5.3.3


Incentive
Why do I have to use PHP 5.3?


Lithium
It’s so rad!


Zend Framework 2


Symfony 2


Doctrine 2


Q&A


Thank you
@davidcoallier


PHP 5.3, a walkthrough

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