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先取り!PHP 7 と WordPress

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2015/07/26 WordCamp Kansai 2015

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先取り!PHP 7 と WordPress

  1. 1.  @shin1x1 2015/07/27 WordCamp Kansai 2015 先取り! PHP 7 と WordPress
  2. 2. (c) 2015 Masashi Shinbara @shin1x1 Shin x blog http://www.1x1.jp/blog/ 2006年から WordPress いつもお世話になってます!
  3. 3. Agenda (c) 2015 Masashi Shinbara @shin1x1 • PHP 7 について • WordPress on PHP 7 • パフォーマンス検証
  4. 4. PHP 7 について
  5. 5. PHP 7 (c) 2015 Masashi Shinbara @shin1x1 • PHP の次期メジャーバージョン
 (現在は、PHP 5) • PHP 6 は、永久欠番 • 2015/11 頃にリリース予定(現在は、β2)
  6. 6. 主な特徴 (c) 2015 Masashi Shinbara @shin1x1 • パフォーマンス向上 • 文法上の新機能 • 変更点(廃止された機能)
  7. 7. パフォーマンス向上 (c) 2015 Masashi Shinbara @shin1x1 https://www.zend.com/en/resources/php7_infographic 5.6 の約 2 倍 HHVM と同等
  8. 8. ?? 演算子 (c) 2015 Masashi Shinbara @shin1x1 • 連想配列にキーが無ければ、右辺を返す • キーが存在しなくても、Notice が出ない $array = ['name' => 'Jun']; echo $array['name'] ?? 'default'; => Jun echo $array['nothing'] ?? 'default'; => default => Noticeエラーにならない!
  9. 9. スカラタイプヒンティング (c) 2015 Masashi Shinbara @shin1x1 • int / float / string がタイプヒンティングに • 型が合わなければ、自動変換 or TypeError class Foo { public function say(int $i, float $f, string $s) { } } $foo = new Foo; $foo->say(1, 1.0, '1');
  10. 10. 戻り値タイプヒンティング (c) 2015 Masashi Shinbara @shin1x1 • クラス、インターフェース名、スカラ型
 callable、self、parent、Closure class Bar { public function get_int(): int { return 1; } }
  11. 11. 匿名クラス (c) 2015 Masashi Shinbara @shin1x1 •new class で匿名クラスを作成 $object = new class { public function say() { echo 'Hello' . PHP_EOL; } }; $object->say(); // Hello
  12. 12. 匿名クラス (c) 2015 Masashi Shinbara @shin1x1 • 基底クラスを継承したり、
 インターフェースやトレイトを追加できる $object = new class implements Readable { use ReaderTrait; }; $object->read();
  13. 13. クロージャの即時実行 (c) 2015 Masashi Shinbara @shin1x1 • JavaScript の IIFE ライクな記法 • クロージャや匿名クラスを即時実行 (function ($message) { echo $message . PHP_EOL; })('Hello');
  14. 14. 廃止された機能 (c) 2015 Masashi Shinbara @shin1x1 • <% や <%= 記法(<?= は有効) • switch 文の 多重 default • mysql 関数(PECL 拡張あり) • ereg 関数 • split 関数 • =& new 記法 WordPressの移行なら、こちらが重要!
  15. 15. WordPress on PHP 7
  16. 16. WordPress on PHP 7 (c) 2015 Masashi Shinbara @shin1x1 MySQL PHP 7.0β2 nginx WordPress
  17. 17. (c) 2015 Masashi Shinbara @shin1x1 WordPress on PHP 7 素の WordPress 4.2 PHP 7 上で動作する
  18. 18. Shin x blog on PHP 7 (c) 2015 Masashi Shinbara @shin1x1 9 年熟成した WordPress プラグイン多数 テーマカスタマイズ 実働しているWordPressを PHP 7に設置
  19. 19. Shin x blog on PHP 7 (c) 2015 Masashi Shinbara @shin1x1 プラグインやテーマが原因で 動かない。。。 エラーメッセージを見ながら 1つづづ修正していく。 動いた!
  20. 20. 修正した箇所 (c) 2015 Masashi Shinbara @shin1x1 PHP Parse error: syntax error, unexpected 'new' (T_NEW) [修正] =& new Hoge -> = new hoge PHP Fatal error: Uncaught Error: Call to undefined function split() [修正] split() -> explode()
  21. 21. WordPress on PHP 7 (c) 2015 Masashi Shinbara @shin1x1 • WordPress 本体は対応済 ? • プラグインやテーマは対応が必要な場合も • エラーメッセージを足がかりに修正
 => WP-DEBUG を true に
 => 開発、検証環境で行う!
  22. 22. パフォーマンス検証
  23. 23. 検証環境 (c) 2015 Masashi Shinbara @shin1x1 MySQL PHP 5.6 MySQL PHP 7.0β2 nginx WordPress 4.2 nginx WordPress 4.2
  24. 24. WordPress 4.2 (c) 2015 Masashi Shinbara @shin1x1 0 8.5 17 25.5 34 5.6 7.0β2 RPS インストール直後の状態 1秒あたりの処理リクエスト数 7.0β2 の方が 2.4 倍多い ab -c 30 -n 1000 で計測
  25. 25. Shin x blog (c) 2015 Masashi Shinbara @shin1x1 0 7.5 15 22.5 30 5.6 7.0β2 RPS テーマカスタム、プラグイン多数 1秒あたりの処理リクエスト数 7.0β2 の方が 4.5 倍多い ab -c 30 -n 1000 で計測
  26. 26. メモリ使用量 (c) 2015 Masashi Shinbara @shin1x1 0 1,250 2,500 3,750 5,000 5.6 7.0β2 kilobyte Shin x blog のピークメモリ メモリ使用量が 56 %減少
 (約半分に!) memory_get_peak_usage(true) で計測
  27. 27. まとめ
  28. 28. まとめ (c) 2015 Masashi Shinbara @shin1x1 • PHP 7 が、11月リリース予定 • 分かりやすい特徴は、パフォーマンスアップ • WordPress 本体は動いている
 (プラグイン、テーマは確認を!)
  29. 29. @shin1x1 (c) 2015 Masashi Shinbara @shin1x1

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