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関西PHP勉強会 php5.4つまみぐい

This document summarizes some new features in PHP 5.4: - Array syntax can now be written more concisely using square brackets instead of array functions. - PHP 5.4 includes a built-in web server for development purposes, allowing PHP scripts to be run without Apache. - Traits allow sharing of methods across classes to reduce code duplication, similar to mixins in Ruby. - Closures now support accessing properties of the enclosing class scope via $this.

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PHP5.4 @tanakahisateru
ABOUT ME • ( ) • @tanakahisateru • https://github.com/tanakahisateru • Firebug, FireCookie, jEdit • ...and Pinoco
• PHP5.4 • Array Short Syntax • Built-in Server • Trait • Closure •
:
PHP5.4 Graham ( @predominant ) :) http://tipshare.info/view/ 4ec326d04b2122ce49000000
PHP5.4
PHP 5.4 RC1 (2011/11/11) • http://www.php.net/archive/2011.php#id2011-11-11-1
PHP PHP 5.4 http://www.1x1.jp/blog/ 2011/06/ try_new_php_without_update _current_version.html configure make
• Windows • http://windows.php.net/qa/ • Mac • XCode + MacPorts or Homebrew • Linux •
% curl -o php-5.4.0RC1.tar.gz http://downloads.php.net/stas/ php-5.4.0RC1.tar.gz % tar xzf php-5.4.0RC1.tar.gz % cd php-5.4.0RC1 % ./configure --prefix=/opt/local/php/5.4 --bindir=/opt/local/bin --with-config-file-path=/opt/local/php/5.4/etc --with-config-file-scan-dir=/opt/local/php/5.4/var/db --mandir=/opt/local/php/5.4/share/man --infodir=/opt/local/php/5.4/share/info --program-suffix=-5.4 --with-apxs2=/opt/local/apache2/bin/apxs ( https://gist.github.com/1344162 ) % make
(make install) sapi/cli/php configure PHP
% sapi/cli/php -v PHP 5.4.0RC1 (cli) (built: Nov 23 2011 23:08:40) Copyright (c) 1997-2011 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2011 Zend Technologies % sapi/cli/php -a Interactive shell php >
php > echo “Hello Worldn”; Hello World php > print_r(array_map(function($x){ return $x * 2; }, range(0,9))); Array ( [0] => 0 [1] => 2 [2] => 4 [3] => 6 [4] => 8 [5] => 10 [6] => 12 [7] => 14 [8] => 16 [9] => 18 ) : php > echo 0xff == 0b11111111, "n"; 1
ARRAY SHORT SYNTAX
array(1, 2, 3) [1, 2, 3]
array(‘a’=>1, ‘b’=>2) [‘a’=>1, ‘b’=>2]
@rsky https://wiki.php.net/rfc/ shortsyntaxforarrays
var $belongsTo = array( ! 'User' ); var $hasMany = array( 'Photo' => array( 'order' => 'number' ) ); var $belongsTo = [ ! 'User' ]; var $hasMany = [ 'Photo' => [ 'order' => 'number' ] ];
$this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); ? $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]);
$this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]);
$this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]); Array
$this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]); [ ... ]
ARRAY SHORT SYNTAX • → • • PHP • Array
ARRAY SHORT SYNTAX • PHP array YAML • PHP
BUILT-IN SERVER
PHP Web
% sapi/cli/php -S localhost:8080
• Javascript Flash file:// API → PHP5.4 • Apache • PHP
.htaccess mod_rewrite
PHP % sapi/cli/php -S localhost:8080 builtin-server.php
list($path, $param) = array_merge( preg_split('/?/', $_SERVER['REQUEST_URI'], 2), ['', ''] ); if($path != '/' && (file_exists('app/webroot' . $path))) { header(sprintf('Location: http://%s/app/webroot%s', $_SERVER['HTTP_HOST'], $_SERVER['REQUEST_URI'])); exit; } else if($path != '/' && (file_exists('./' . $path))) { return false; } else { $_SERVER['PATH_INFO'] = $path; require 'app/webroot/index.php'; }
% ~/php54/php-5.4.0RC1/sapi/cli/php -S localhost:8080 builtin-server.php
PHP 5.4.0RC1 Development Server started at Thu Nov 24 02:11:37 2011 Listening on localhost:8080 Document root is /Users/tanakahisateru/Sites/cakephp2 Press Ctrl-C to quit. [Thu Nov 24 02:11:42 2011] ::1:63556 [200]: /app/webroot/css/cake.generic.css [Thu Nov 24 02:11:42 2011] ::1:63557 [200]: /app/webroot/img/cake.power.gif [Thu Nov 24 02:11:42 2011] ::1:63558 [200]: /app/webroot/img/cake.icon.png [Thu Nov 24 02:11:42 2011] ::1:63564 [200]: /app/webroot/favicon.ico
MacPorts MySQL php.ini % ~/php54/php-5.4.0RC1/ sapi/cli/php -c ~/php54/ php-5.4.0RC1/ -S localhost:8080 builtin-server.php ~/php54/php-5.4.0RC1/php.ini [Pdo_mysql] pdo_mysql.default_socket=/opt/local/var/run/mysql5/mysqld.sock MySQL
BUILT-IN SERVER • URL OK • Apache • PHP5.3 Apache mod_php PHP5.4
TRAIT
NO.1
TRAIT • • Ruby mixin • PHP (instanceof ) •
1 INCLUDE / REQUIRE • • HTML • /
2 • • • class AppModel extends Model class GuestUser extends AppModel class AdminUser extends AppModel User
class AppModel extends Model { } class GuestUser extends AppModel { public function getDisplayLabel() { ...; } } !! class AdminUser extends AppModel { public function getDisplayLabel() { ...; } public function getAdminRioleType() { ...; } }
class AppModel extends Model { public function getDisplayLabel() { ...; } } class GuestUser extends AppModel { } class AdminUser extends AppModel { public function getAdminRioleType() { ...; } }
class AppModel extends Model { public function getDisplayLabel() { return $this->username . “ ”; } } class GuestUser extends AppModel { } class AdminUser extends AppModel { public function getAdminRoleType() { ...; } } class Comment extends AppModel { // username ← }
UserModel.inc public function getDisplayLabel() { return $this->username . “ ”; } class GuestUser extends AppModel { require ‘UserModel.inc’; } class AdminUser extends AppModel { require ‘UserModel.inc’; public function getAdminRoleType() { ...; } } class Comment extends AppModel { } ... require = orz
trait UserModel { public function getDisplayLabel() { return $this->username . “ ”; } } class GuestUser extends AppModel { use UserModel; } class AdminUser extends AppModel { use UserModel; public function getAdminRoleType() { ...; } } class Comment extends AppModel { }
trait PersistentModel { public function save() { } = } abstract class User { = public function getDisplayLabel() { return $this->username . “ ”; } } class GuestUser extends User inplements Persistence { use PersistentModel; } class AdminUser extends User inplements Persistence { use PersistentModel; public function getAdminRoleType() { ...; } }
PHP5.4 O/R
CLOSURE
CALLABLE
call_user_func php > $fun = 'intval'; php > echo call_user_func($fun, "0001abc"), "n"; 1 php > echo is_callable($fun), "n"; 1 php > echo is_string($fun), "n"; 1 php > echo $fun("0001abc"), "n"; 1
call_user_func array php > $obj = new Exception('hoge'); php > $msg = [$obj, 'getMessage']; php > echo call_user_func($msg), "n"; hoge php > echo is_callable($msg), "n"; 1 php > echo is_array($msg), "n"; 1 php > echo $msg(), "n"; hoge
php > echo $closure(), "n"; // string array ↓ is_callable Array
$THIS IN CLOSURE
PHP5.3 <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n";
PHP5.3 <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; $self = $this; return function() use($self, &$c) { return $self->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n";
self → Python
PHP5.4 OK! <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n";
<?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n"; c1:100 <-- init=100 + c=0 c1:101 <-- init=100 + c=1 c2:100 <-- init=100 + c=0 c2:101 <-- init=100 + c=1 c2:102 <-- init=100 + c=2 c1:102 <-- init=100 + c=2
Javascript
$THIS <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; $c1 = $c1->bindTo(new CounterFactory(1000)); echo "c1:", $c1(), "n";
<?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; $c1 = $c1->bindTo(new CounterFactory(1000)); echo "c1:", $c1(), "n"; c1:100 <-- init=100 + c=0 c1:101 <-- init=100 + c=1 c1:1002 <-- init=1000 + c=2
CLOSURE • PHP5.4 create_function • Javascript this • $this $this • → PHP5.3 $self bindTo PHP5.4 $this
<?php <?php class Hoge { class Hoge { function __construct($init) { function __construct($init) { $this->init = $init; $this->init = $init; } } function x($n) { function x($n) { $tmp = []; return array_map( for($i=0; $i<$n; $i++) { function() { $tmp[] = $this->init; return $this->init; } }, range(0,$n-1) return $tmp; ); } } } } print_r((new Hoge(100))->x(3)); print_r((new Hoge(100))->x(3));
• new • array
PHP5.3 PHP5.4 OK echo (new Exception("hoge"))->getMessage(), "n";
PHP5.3 PHP5.4 OK echo range(0, 9)[5], “n”;
PHP5.4.0RC1 php > echo (array(1, 2, 3))[0], "n"; Parse error: syntax error, unexpected '[', expecting ',' or ';' in php shell code on line 1 php > echo (function($x){ return $x * 2; })(10), "n"; Parse error: syntax error, unexpected '(', expecting ',' or ';' in php shell code on line 1
<?= <?=
PHP5.4 • PHP5.3 5.2 • • Phar • PHP5.4
PHP5.4

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関西PHP勉強会 php5.4つまみぐい

  • 1.
  • 2.
    ABOUT ME • ( ) • @tanakahisateru • https://github.com/tanakahisateru • Firebug, FireCookie, jEdit • ...and Pinoco
  • 4.
    • PHP5.4 • Array Short Syntax • Built-in Server • Trait • Closure •
  • 5.
  • 6.
    PHP5.4 Graham ( @predominant ) :) http://tipshare.info/view/ 4ec326d04b2122ce49000000
  • 7.
  • 8.
    PHP 5.4 RC1(2011/11/11) • http://www.php.net/archive/2011.php#id2011-11-11-1
  • 9.
    PHP PHP 5.4 http://www.1x1.jp/blog/ 2011/06/ try_new_php_without_update _current_version.html configure make
  • 10.
    • Windows • http://windows.php.net/qa/ • Mac • XCode + MacPorts or Homebrew • Linux •
  • 11.
    % curl -ophp-5.4.0RC1.tar.gz http://downloads.php.net/stas/ php-5.4.0RC1.tar.gz % tar xzf php-5.4.0RC1.tar.gz % cd php-5.4.0RC1 % ./configure --prefix=/opt/local/php/5.4 --bindir=/opt/local/bin --with-config-file-path=/opt/local/php/5.4/etc --with-config-file-scan-dir=/opt/local/php/5.4/var/db --mandir=/opt/local/php/5.4/share/man --infodir=/opt/local/php/5.4/share/info --program-suffix=-5.4 --with-apxs2=/opt/local/apache2/bin/apxs ( https://gist.github.com/1344162 ) % make
  • 12.
  • 13.
    % sapi/cli/php -v PHP5.4.0RC1 (cli) (built: Nov 23 2011 23:08:40) Copyright (c) 1997-2011 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2011 Zend Technologies % sapi/cli/php -a Interactive shell php >
  • 14.
    php > echo“Hello Worldn”; Hello World php > print_r(array_map(function($x){ return $x * 2; }, range(0,9))); Array ( [0] => 0 [1] => 2 [2] => 4 [3] => 6 [4] => 8 [5] => 10 [6] => 12 [7] => 14 [8] => 16 [9] => 18 ) : php > echo 0xff == 0b11111111, "n"; 1
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
    var $belongsTo =array( ! 'User' ); var $hasMany = array( 'Photo' => array( 'order' => 'number' ) ); var $belongsTo = [ ! 'User' ]; var $hasMany = [ 'Photo' => [ 'order' => 'number' ] ];
  • 20.
    $this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); ? $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]);
  • 22.
    $this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]);
  • 23.
    $this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]); Array
  • 24.
    $this->render('list', array( 'posts' => Post::find(array( 'limit' => Config::get('postsPerPage', array('context'=>'blog', 'default'=>10)), )) )); $this->render('list', [ 'posts' => Post::find([ 'limit' => Config::get('postsPerPage', ['context'=>'blog', 'default'=>10]), ]) ]); [ ... ]
  • 25.
    ARRAY SHORT SYNTAX • → • • PHP • Array
  • 26.
    ARRAY SHORT SYNTAX • PHP array YAML • PHP
  • 27.
  • 28.
  • 29.
    % sapi/cli/php -Slocalhost:8080
  • 30.
    • Javascript Flash file:// API → PHP5.4 • Apache • PHP
  • 31.
    .htaccess mod_rewrite
  • 32.
    PHP % sapi/cli/php -Slocalhost:8080 builtin-server.php
  • 33.
    list($path, $param) =array_merge( preg_split('/?/', $_SERVER['REQUEST_URI'], 2), ['', ''] ); if($path != '/' && (file_exists('app/webroot' . $path))) { header(sprintf('Location: http://%s/app/webroot%s', $_SERVER['HTTP_HOST'], $_SERVER['REQUEST_URI'])); exit; } else if($path != '/' && (file_exists('./' . $path))) { return false; } else { $_SERVER['PATH_INFO'] = $path; require 'app/webroot/index.php'; }
  • 34.
    % ~/php54/php-5.4.0RC1/sapi/cli/php -Slocalhost:8080 builtin-server.php
  • 36.
    PHP 5.4.0RC1 DevelopmentServer started at Thu Nov 24 02:11:37 2011 Listening on localhost:8080 Document root is /Users/tanakahisateru/Sites/cakephp2 Press Ctrl-C to quit. [Thu Nov 24 02:11:42 2011] ::1:63556 [200]: /app/webroot/css/cake.generic.css [Thu Nov 24 02:11:42 2011] ::1:63557 [200]: /app/webroot/img/cake.power.gif [Thu Nov 24 02:11:42 2011] ::1:63558 [200]: /app/webroot/img/cake.icon.png [Thu Nov 24 02:11:42 2011] ::1:63564 [200]: /app/webroot/favicon.ico
  • 37.
    MacPorts MySQL php.ini % ~/php54/php-5.4.0RC1/ sapi/cli/php -c ~/php54/ php-5.4.0RC1/ -S localhost:8080 builtin-server.php ~/php54/php-5.4.0RC1/php.ini [Pdo_mysql] pdo_mysql.default_socket=/opt/local/var/run/mysql5/mysqld.sock MySQL
  • 38.
    BUILT-IN SERVER • URL OK • Apache • PHP5.3 Apache mod_php PHP5.4
  • 39.
  • 40.
  • 41.
    TRAIT • • Ruby mixin • PHP (instanceof ) •
  • 43.
    1 INCLUDE / REQUIRE • • HTML • /
  • 44.
    2 • • • class AppModel extends Model class GuestUser extends AppModel class AdminUser extends AppModel User
  • 45.
    class AppModel extendsModel { } class GuestUser extends AppModel { public function getDisplayLabel() { ...; } } !! class AdminUser extends AppModel { public function getDisplayLabel() { ...; } public function getAdminRioleType() { ...; } }
  • 46.
    class AppModel extendsModel { public function getDisplayLabel() { ...; } } class GuestUser extends AppModel { } class AdminUser extends AppModel { public function getAdminRioleType() { ...; } }
  • 47.
    class AppModel extendsModel { public function getDisplayLabel() { return $this->username . “ ”; } } class GuestUser extends AppModel { } class AdminUser extends AppModel { public function getAdminRoleType() { ...; } } class Comment extends AppModel { // username ← }
  • 48.
    UserModel.inc public function getDisplayLabel() { return $this->username . “ ”; } class GuestUser extends AppModel { require ‘UserModel.inc’; } class AdminUser extends AppModel { require ‘UserModel.inc’; public function getAdminRoleType() { ...; } } class Comment extends AppModel { } ... require = orz
  • 49.
    trait UserModel { public function getDisplayLabel() { return $this->username . “ ”; } } class GuestUser extends AppModel { use UserModel; } class AdminUser extends AppModel { use UserModel; public function getAdminRoleType() { ...; } } class Comment extends AppModel { }
  • 51.
    trait PersistentModel { public function save() { } = } abstract class User { = public function getDisplayLabel() { return $this->username . “ ”; } } class GuestUser extends User inplements Persistence { use PersistentModel; } class AdminUser extends User inplements Persistence { use PersistentModel; public function getAdminRoleType() { ...; } }
  • 52.
  • 54.
  • 56.
  • 57.
    call_user_func php > $fun = 'intval'; php > echo call_user_func($fun, "0001abc"), "n"; 1 php > echo is_callable($fun), "n"; 1 php > echo is_string($fun), "n"; 1 php > echo $fun("0001abc"), "n"; 1
  • 58.
    call_user_func array php > $obj = new Exception('hoge'); php > $msg = [$obj, 'getMessage']; php > echo call_user_func($msg), "n"; hoge php > echo is_callable($msg), "n"; 1 php > echo is_array($msg), "n"; 1 php > echo $msg(), "n"; hoge
  • 59.
    php > echo$closure(), "n"; // string array ↓ is_callable Array
  • 60.
  • 61.
    PHP5.3 <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n";
  • 62.
    PHP5.3 <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; $self = $this; return function() use($self, &$c) { return $self->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n";
  • 63.
  • 64.
    PHP5.4 OK! <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n";
  • 65.
    <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); $c2 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c2:", $c2(), "n"; echo "c1:", $c1(), "n"; c1:100 <-- init=100 + c=0 c1:101 <-- init=100 + c=1 c2:100 <-- init=100 + c=0 c2:101 <-- init=100 + c=1 c2:102 <-- init=100 + c=2 c1:102 <-- init=100 + c=2
  • 66.
  • 67.
    $THIS <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; $c1 = $c1->bindTo(new CounterFactory(1000)); echo "c1:", $c1(), "n";
  • 68.
    <?php class CounterFactory { function __construct($init) { $this->init = $init; } function createCounter() { $c = 0; return function() use(&$c) { return $this->init + ($c++); }; } } $fact = new CounterFactory(100); $c1 = $fact->createCounter(); echo "c1:", $c1(), "n"; echo "c1:", $c1(), "n"; $c1 = $c1->bindTo(new CounterFactory(1000)); echo "c1:", $c1(), "n"; c1:100 <-- init=100 + c=0 c1:101 <-- init=100 + c=1 c1:1002 <-- init=1000 + c=2
  • 69.
    CLOSURE • PHP5.4 create_function • Javascript this • $this $this • → PHP5.3 $self bindTo PHP5.4 $this
  • 70.
    <?php <?php class Hoge { class Hoge { function __construct($init) { function __construct($init) { $this->init = $init; $this->init = $init; } } function x($n) { function x($n) { $tmp = []; return array_map( for($i=0; $i<$n; $i++) { function() { $tmp[] = $this->init; return $this->init; } }, range(0,$n-1) return $tmp; ); } } } } print_r((new Hoge(100))->x(3)); print_r((new Hoge(100))->x(3));
  • 72.
  • 74.
    PHP5.3 PHP5.4 OK echo (new Exception("hoge"))->getMessage(), "n";
  • 75.
    PHP5.3 PHP5.4 OK echo range(0, 9)[5], “n”;
  • 76.
    PHP5.4.0RC1 php > echo(array(1, 2, 3))[0], "n"; Parse error: syntax error, unexpected '[', expecting ',' or ';' in php shell code on line 1 php > echo (function($x){ return $x * 2; })(10), "n"; Parse error: syntax error, unexpected '(', expecting ',' or ';' in php shell code on line 1
  • 78.
  • 79.
    PHP5.4 • PHP5.3 5.2 • • Phar • PHP5.4
  • 81.