PHP 5.3/6

About me
 Application Developer
▹ PHP
▹ XSLT/XPath
▹ (some) Javascript

papaya CMS
▹ PHP based Content Management System
▹ uses XSLT for Templates

Thomas Weinert, papaya Software GmbH 2

PHP 5.3

„PHP 5.3 is still young“


PHP 5.3


PHP 6

„PHP 6 is already in development“


PHP 6

… for some years ...


PHP 5.3

What do we get?


Bugfixes

All Closed Open Critical Verified Analyzed

13085 4007(199) 919 (50) 2 11 2

Assigned Suspended Feedback No Wont fix Bogus
Feedback

261 26 45 1651 350 5806


Performance

Performance

about 5 – 15% or more?


Garbage Collection
 gc_enable()
▹ Activates the circular reference collector

gc_collect_cycles()
▹ Forces collection of any existing garbage cycles.
 gc_disable()

gc_enabled()


PHP.INI
 per directory (like .htaccess)
▹ Cached

[PATH=/opt/httpd/www.example.com/]

[HOST=www.example.com]



Ini „variables“

absolute paths for extensions


Extensions Changed
 PCRE, Reflection, SPL
▹ can not be disabled any more

MySQL(i)
▹ mysqlnd
 SQLite
▹ SQLite 3 Support

GD
▹ removed GD1 and Freetype1 support

Extensions Moved
 Moved to PECL
▹ fdf
▹ ncurses
▹ sybase
▹ ming
▹ dbase
▹ fbsql
▹ mime_magic


Extensions Added
 fileinfo
 intl

phar


Fileinfo
 File mimetype
▹ from magic bytes
▹ not bullet proof

 BC to ext/mime_magic
▹ mime_content_type()


Fileinfo Sample
<?php

$finfo = finfo_open(FILEINFO_MIME);

foreach (glob(quot;*quot;) as $filename) {
echo finfo_file($finfo, $filename) . quot;nquot;;
}

finfo_close($finfo);
?>


INTL
 ICU
▹ International Components for Unicode

Internationalization
▹ String functions
▹ Collator
▹ Number Formatter
▹ Message Formatter
▹ Normalizer
▹ Locale

PHAR
 PHP applications in one package
 easy distribution and installation

verify archive integrity

PHP stream wrapper

tar and zip

Phar format with stub
<?php
include
'phar:///path/to/myphar.phar/file.php';
?> Weinert, papaya Software GmbH
Thomas 18

PHAR
 Using a stub
 Makes a PHAR file a PHP script

<?php
Phar::webPhar();
__HALT_COMPILER();


http://www.domain.tld/app.phar/page.php


SPL
 Now always enabled


many iterators and recursive iterators

SPLFixedArray

http://www.php.net/spl


Error Reporting
 E_DEPRECATED splitted from E_STRICT
 E_DEPRECATED included in E_ALL


is_a() is not in E_DEPRECATED any more
▹ but documentation still says it is


Syntax Sugar
 __DIR__ replaces dirname(__FILE__)
 ?:
▹ $foo = $bar ?: 'default'

Nowdoc
▹ $foo = <<<'HTML' // no variables parsed

Heredoc
▹ double quotes
▹ static $foo = <<<HTML // no variables allowed

Static
 Late Static Binding
 __callStatic

static::foo


LSB - Why
<?php
class bar {
public function show() {
var_dump(new self);
}
}
class foo extends bar {
public function test() {
parent::show();
}
}
$foo = new foo;
$foo->test();
?> object(bar)#2 (0) { }

LSB - Why
<?php
class bar {
public function show() {
var_dump(new static);
}
}
class foo extends bar {
public function test() {
parent::show();
}
}
$foo = new foo;
$foo->test();
?> object(foo)#2 (0) { }

Dynamic Static Calls
<?php
class foo {
function bar() {
var_dump('Hello World');
}
}
foo::bar();

$o = new foo();
$o::bar();

$s = 'foo';
$s::bar();
?>

Lambda Functions
<?php
header('Content-type: text/plain');
$text = '<b>Hello <i>World</i></b>';
$ptn = '(<(/?)(w+)([^>]*)>)';

$cb = function($m) {
if (strtolower($m[2]) == 'b') {
return '<'.$m[1].'strong'.$m[3].'>';
}
return '';
};
echo preg_replace_callback($ptn, $cb, $text);
?>

Closures
...
$repl = array(
'b' => 'strong',
'i' => 'em'
);
$cb = function ($m) use ($repl) {
$tag = strtolower($m[2]);
if (!empty($replace[$tag])) {
return '<'.$m[1].$repl[$tag].$m[3].'>';
}
return '';
};
echo preg_replace_callback($ptn, $cb, $t);
?>

Currying
function curry($callback) {
$args = func_get_args();
array_shift($args);
return function() use ($callback, $args) {
$args = array_merge(
func_get_args(),
$args
);
return call_user_func_array(
$callback,
$args
);
};
}

Currying
$cb = curry(array('replace', 'tags'), $replace);
echo preg_replace_callback(
$pattern, $cb, $text
);

class replace {
function tags($m, $repl) {
$tag = strtolower($m[2]);
if (!empty($repl[$tag])) {
return '<'.$m[1].$repl[$tag].$m[3].'>';
}
return '';
}
}

Namespaces
 Encapsulation
▹ Classes
▹ Functions
▹ Constants

__NAMESPACE__

Overload classes


Namespace Separator
 Old  Current
▹ Double Colon ▹ Backslash?
▹ Paamayim ▹ Discussion started
Nekudotayim

::

Namespaces: Classes
<?php
namespace carica::core::strings;

const CHARSET = 'utf-8';

class escape {
public static function forXML($content) {
return htmlspecialchars(
$content, ENT_QUOTES, CHARSET
);
}
}
?>

Use Namespaces
...
namespace carica::frontend;
use carica::core::strings as strings;
...
public function execute() {
echo strings::escape::forXML(
'Hello World'
);
}
...


Namespaces: Constants
 PHP-Wiki:
▹ constants are case-sensitive, but namespaces are
case-insensitive.
▹ defined() is not aware of namespace aliases.
▹ the namespace part of constants defined with
const are lowercased.


GOTO
<?php
goto a;
print 'Foo';

a:
print 'Bar';
?>


PHP 6
 „Backports“ to PHP 5.3


Upload progress in session

Unicode
▹ PHP Source
▹ Functions
▹ Resources


Links
 Slides
▹ http://www.abasketfulofpapayas.de

PHP 5.3 upgrading notes
▹ http://wiki.php.net/doc/scratchpad/upgrade/53
 PHP 5.3 ToDo
▹ http://wiki.php.net/todo/php53

PHP 6 ToDo
▹ http://wiki.php.net/todo/php60

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