PSR が分かってきた

PHPカンファレンス北海道2016 の発表資料です。
たきゃはし @takahashiyuya
2016/04/16

1. PSR ͕෼͔͖ͬͯͨ PHPΧϯϑΝϨϯε๺ւಓ2016
2. ࣗݾ঺հ • ͖ͨΌ͸͠ @takahashiyuya • ͱ͕େ޷͖ • WebσβΠϯɺPHPɺJS
3. PSR͸ ίʔσΟϯάن໿ ͦΜͳ;͏ʹߟ͍͑ͯͨ࣌ظ͕Զʹ΋͋Γ·ͨ͠...
7. PHPඪ४קࠂ
8. PHP Standards Recommendations • PHPඪ४קࠂɺPHP-FIG ʹΑΓࡦఆ • ΦʔτϩʔσΟϯάʢPSR-0, PSR-4ʣ • ίʔσΟϯάελΠϧʢPSR-1, PSR-2ʣ
9. PHP-FIG ౤ථϝϯόʔ Agavi Assetic and Buzz Aura Project and Solar Framework CakePHP Composer concrete5 Contao Open Source CMS Doctrine Drupal eZ Publish Guzzle Horde IBMi Toolkit Icicle Jackalope Joomla Laravel The League of Extraordinary Packages Lithium Magento PEAR Phalcon Phing phpBB phpDocumentor PHPixie PPI Framework PrestaShop Propel PyroCMS ReactPHP Revive Adserver sabre/dav Sculpin SilverStripe Slim Stash Stormpath PHP SDK SugarCRM Symfony Neos and Flow Wikibase and Semantic MediaWiki Yii framework Zend Framework 2 Zikula David Zülke Kris Wallsmith Paul M. Jones Larry Masters Jordi Boggiano Korvin Szanto Leo Feyer Guilherme Blanco Larry Garfield Andre Romcke Jeremy Lindblom Jan Schneider Adam Culp Aaron Piotrowski Lukas Kahwe Smith Robert Deutz Taylor Otwell Kayla Daniels Nate Abele Ben Marks Chuck Burgess Andres Gutierrez Michiel Rook Nils Adermann Mike van Riel Roman Tsiupa Paul Dragoonis Rémi Gaillard William Durand Ryan Thompson Cees-Jan Kiewiet Matteo Beccati Evert Pot Chris Tankersley Christopher Pitt Josh Lockhart Robert Hafner Brian Retterer Andreas Sandberg Bernhard Schussek Karsten Dambekalns Jeroen De Dauw Alexander Makarov Matthew Weier O'Phinney Shefik Macauley
10. PHP Standards Recommendations • PHPඪ४קࠂɺPHP-FIG ʹΑΓࡦఆ • ΦʔτϩʔσΟϯάʢPSR-0, PSR-4ʣ • ίʔσΟϯάελΠϧʢPSR-1, PSR-2ʣ
11. PSR-0 ඇਪ঑
12. PSR-4
13. PSR-4 ΦʔτϩʔσΟϯά • ׬શम০Ϋϥε໊͸τοϓϨϕϧ໊લۭؒΛ࣋ͨͳ͚Ε͹ͳΒͣɺ·ͨ͜Ε ͸ʮϕϯμʔ໊લۭؒʯͱͯ͠஌ΒΕ͍ͯΔɻ • ׬શम০Ϋϥε໊͸̍ͭҎ্ͷαϒ໊લ໊ۭؒΛ࣋ͭ͜ͱ΋Ͱ͖Δɻ • ׬શम০Ϋϥε໊͸࠷ޙʹΫϥε໊Λ࣋ͨͳ͚Ε͹ͳΒͳ͍ɻ • ׬શम০Ϋϥε໊ͷΞϯμʔείΞ͸ಛผͳҙຯΛ࣋ͨͳ͍ɻ • ׬શम০Ϋϥε໊ͷΞϧϑΝϕοτจࣈ͸খจࣈͱେจࣈΛ૊Έ߹ΘͤΔ͜ ͱ͕Ͱ͖Δɻ • ͢΂ͯͷΫϥε໊͸େจࣈͱখจࣈΛ۠ผ͢ΔΑ͏ʹࢀর͞Εͳ͚Ε͹ͳΒ ͳ͍ɻ
14. PSR-4 ΦʔτϩʔσΟϯάཁ໿ • τοϓϨϕϧʹϕϯμʔ໊લۭؒΛ࣋ͪɺ̍ ͭҎ্ͷαϒ໊લ໊ۭؒΛ࣋ͪɺ࠷ޙʹΫϥ ε໊Λ࣋ͭΑ͏ʹ namespace Λఆٛ͢Ε͹ɺ Φʔτϩʔμʔ͕ϑΝΠϧΛࣗಈతʹಡΈࠐ ΜͰ͘ΕΔɻ \<ϕϯμʔ໊લۭؒ>(\<αϒ໊લ໊ۭؒ>)*\<Ϋϥε໊>
15. PSR-1 PSR-2
16. PSR-1 جຊίʔσΟϯάن໿ • PHPίʔυͷ૬ޓӡ༻ੑΛߴ͍ϨϕϧͰอͭ ͨΊʹඞཁͱ͞ΕΔجຊతͳίʔσΟϯάن ໿ • PSR-0(PSR-4)ʹ४ڌ͢Δඞཁ͕͋Δ
17. PSR-1 جຊίʔσΟϯάن໿ • PHPίʔυ͸ <?php ٴͼ <?= λά • จࣈίʔυ͸UTF-8ʢBOMແ͠ʣ • Ϋϥε໊͸StudlyCapsʢ୯ޠͷઌ಄ΛେจࣈͰॻ͘ه๏ʣ • ϝιου໊͸camelCaseʢઌ಄͸খจࣈʣ ৄ͘͠͸ ΠϯϑΟχοτϧʔϓ͞Μͷٕज़ϒϩά PSR-1 جຊίʔσΟϯάن໿ʢ೔ຊޠʣ → http://www.infiniteloop.co.jp/docs/psr/psr-1-basic-coding-standard.html
18. PSR-2 ίʔσΟϯάελΠϧΨΠυ • PHPίʔυͷॻࣜΛ౷Ұͯ͠ೝࣝͷᴥᴪΛ๷ ͙ͨΊʹඞཁͱ͞ΕΔίʔσΟϯάελΠϧ ΨΠυɻ • PSR-1ʹ४ڌ͢Δඞཁ͕͋Δɻ
19. PSR-2 ίʔσΟϯάελΠϧΨΠυ • Πϯσϯτ͸εϖʔε4ͭʢλϒ͸μϝʣ • ໊લۭؒͷ͋ͱ͸1ߦۭ͚ΔʢuseϒϩοΫޙ ΋ಉ༷ʹۭ͚Δʣ ৄ͘͠͸ ΠϯϑΟχοτϧʔϓ͞Μͷٕज़ϒϩά PSR-1 جຊίʔσΟϯάن໿ʢ೔ຊޠʣ → http://www.infiniteloop.co.jp/docs/psr/psr-1-basic-coding-standard.html
21. PSR-3
22. PSR-3 Logger Interface • PSRͰॳΊͯঝೝ͞ΕͨΠϯλʔϑΣʔε • ໨ඪ͸FW΍ϥΠϒϥϦͰར༻͢ΔϩΨʔΛ࣮ ૷Ͱ͖ΔΑ͏ʹ͢Δ͜ͱ
23. PSR-3 Logger Interface • Psr\Log\LoggerInterface Λ࣮૷͢Δ • RFC 5424 The Syslog Protocol Ͱه͞Ε͍ͯΔ8Ϩϕ ϧͷϩάॻ͖ࠐΈ༻ͷϝιου
 - http://tools.ietf.org/html/rfc5424 • 9ͭ໨ͷϩάॻ͖ࠐΈ༻ϝιουͱͳΔlogϝιου • ֦ுͯ͠΋Α͍͕ɺPSR-3ͱޓ׵ੑΛอͭඞཁ͕͋Δɻ
24. PSR-3 Logger Interface • PSR-3ʹ४ڌͨ͠୅දతͳϥΠϒϥϦ • Monolog • ࠷ۙͷFW͸MonologΛ౷߹ͯ͠Δࣄ͕ଟ͍ͷ ͰɺPSR-3४ڌͷϩΨʔʹࠩ͠ସ͑ͨΓɺ༻్ ʹԠ֦ͯ͡ுͨ͠Γ͢Δ͜ͱ΋Մೳɻ
25. PSR-6
26. PSR-6 Caching Interface • ։ൃऀ͕طଘͷFW΍γεςϜʹΩϟογϡϥ ΠϒϥϦΛ౷߹Ͱ͖ΔΑ͏ʹ͢Δ • ࣮૷ʹ͸ϓʔϧͱΞΠςϜ͕ॏཁͳཁૉͱͳ Δ
27. PSR-6 Caching Interface • Psr\Cache\CacheItemInterface • ΩϟογϡͷΞΠςϜͦͷ΋ͷ • ஋ͱ༗ޮظݶ͕ηοτ͞ΕΔ • Psr\Cache\CacheItemPoolInterface • ΞΠςϜΛ؅ཧ͢ΔʢΞΠςϜΛੜ੒ͷ੹຿͕͋Δʣ • ΞΠςϜΛอଘɾऔಘɾ࡟আͰ͖Δ
28. PSR-7
29. PSR-7 HTTP message interfaces • Web։ൃͷج൫ͱͳΔHTTPϝοηʔδͷΠϯ λʔϑΣʔεΛఏڙ • HTTP is Simple 
 - http://symfony.com/doc/current/book/http_fundamentals.html#http-is-simple
30. PSR-7 HTTP message interfaces • Psr\Http\Message\MessageInterface • ϓϩτίϧόʔδϣϯɺϔομɺϘσΟ • Psr\Http\Message\RequestInterface • HTTPϝιουɺURI • Psr\Http\Message\ServerRequestInterface • εʔύʔάϩʔόϧม਺ͷαʔόɺΫοΩʔɺΫΤϦจࣈྻɺϑΝΠϧɺϘσΟͱଐੑ • Psr\Http\Message\ResponseInterface • εςʔλείʔυͱReason-Phraseɻ͍ΘΏΔεςʔλεߦɻ • ଞʹ StreamInterfaceɺUriInterfaceɺUploadedFileInterface ͕४උ͞Ε͍ͯ·͢ɻ
31. PSR-7 HTTP message interfaces • ෆมΦϒδΣΫτʢImmutableʣ
 - http://qiita.com/asaokamei/items/b86e384867bcf0379cea • ྫ͑͹ϦΫΤετΦϒδΣΫτ͕ॲཧதʹม ߋ͞ΕΔ͜ͱ͸ෆࣗવɻ • ༧૝֎ͷมߋʹΑΔ໰୊Λະવʹ๷͕ΕΔɻ
32. ࠓͷͱ͜Ζ஌͓ͬͯ͘ͱ͍͍ ͔ͳతͳঝೝࡁΈͷPSR 6ͭ Λ͝঺հ͠·ͨ͠
33. PSR-12 ίʔσΟϯάελΠϧΨΠυվ • PSR-2Λ֦ு͠ɺஔ͖׵͑Δ • ໾ׂ͸PSR-2ಉ༷ϝϯόʔؒͷೝࣝͷᴥᴪΛ๷ ͙ͨΊͷίʔσΟϯάελΠϧΨΠυ • PSR-1ʹ४ڌ͢Δඞཁ͕͋Δ • ૲Ҋ͕͍ͩۙ͏ͪʹঝೝ͞ΕΔʢͱࢥ͏ʣ
34. PSR-12 ίʔσΟϯάελΠϧΨΠυվ <?php declare(strict_types=1); namespace Vendor\Package; use Vendor\Package\{ClassA as A, ClassB, ClassC as C}; use Vendor\Package\Namespace\ClassD as D; use function Vendor\Package\{functionA, functionB, functionC}; use const Vendor\Package\{ConstantA, ConstantB, ConstantC}; class Foo extends Bar implements FooInterface {
35. PSR-12 ίʔσΟϯάελΠϧΨΠυվ class Foo extends Bar implements FooInterface { public function sampleFunction(int $a, int $b = null): array { if ($a === $b) { bar(); } elseif ($a > $b) { $foo->bar($arg1); } else { BazClass::bar($arg2, $arg3); } } final public static function bar() { // method body } }
36. PSR-12 ίʔσΟϯάελΠϧΨΠυվ class Foo extends Bar implements FooInterface { public function sampleFunction(int $a, int $b = null): array { if ($a === $b) { bar(); } elseif ($a > $b) { $foo->bar($arg1); } else { BazClass::bar($arg2, $arg3); } } final public static function bar() { // method body } }
37. PSR-12 ίʔσΟϯάελΠϧΨΠυվ • PSR-12 Extended Coding Style Guide
 - https://github.com/php-fig/fig-standards/blob/master/proposed/extended-coding- style-guide.md • declare
 - http://php.net/manual/ja/control-structures.declare.php • ڧ͍ܕ෇͚
 - http://php.net/manual/ja/functions.arguments.php#functions.arguments.type- declaration.strict • TypeError
 - http://php.net/manual/ja/class.typeerror.php
38. ·ͱΊ
39. PSR͸ ҰൠతͳίʔσΟϯάن໿ͷΈͳΒͣ ΠϯλʔϑΣʔε΍ηΩϡϦςΟͱ͍ͬ ͨ։ൃͱ͍͏࿮૊ΈΛඪ४Խ͢Δ͜ͱ ʹΑͬͯɺಛఆͷϓϩδΣΫτͷϧʔ ϧʹґଘ͠ͳ͍ίϯϙʔωϯτϕʔε ͷ։ൃ΍ηΩϡΞͰ඼࣭ͷߴ͍ίʔσΟ ϯάʹूத͢ΔͨΊʹՁ஋ͷ͋Δඪ४ קࠂͩͱײ͡·ͨ͠ɻ
40. ͝ਗ਼ௌ ͋Γ͕ͱ͏ ͍͟͝·ͨ͠