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【アシアル塾】PHPオブジェクト指向再入門・第一回クラスとオブジェクト

PHPプログラミング学習用の資料です。
PHPによるクラスの定義やオブジェクトの生成・アクセサメソッドや命名について言及しています。

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【アシアル塾】PHPオブジェクト指向再入門・第一回クラスとオブジェクト

  1. 1. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 1 PHP 1 3,000 Web
  2. 2. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 2  •  • ( )  1. 2. 3. 4. PHP
  3. 3. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 3
  4. 4. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 4  • •  • •  • •
  5. 5. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 5   関数 関数 関数 データ 関数 データ データ 関数 クラスA クラスB 関数 関数 データ データ データ 関数 関数 関数 DB処理 メール処理 役 割 分 担 が 明 確
  6. 6. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 6  • 1960 Simula  • •   • ( )  •  objectA objectB objectC objectD
  7. 7. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 7  • class  PHP class • (class) (function)  class –  (class) • •
  8. 8. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 8
  9. 9. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 9   • $this • public  <?php class Person // 人を表すクラス { public $name = ''; // 名前を記憶するプロパティ public function sayHello() // あいさつするメソッド { echo 'こんにちは、' . $this->name . 'です。'; } } Person.php
  10. 10. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 10   •  new – $object = new (); •  $object-> = 'foo'  echo $object-> •  $object-> () <?php require_once('Person.php'); $taro = new Person(); // newでオブジェクトを作成します $taro->name = 'アシアル太郎'; // name属性の値を変更します $taro->sayHello(); // 「こんにちは、アシアル太郎です。」と出力されます index.php
  11. 11. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 11  •  •  
  12. 12. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 12  • public private protected 3  public • $taro = new Person(); • $taro->name = ' '; // public OK  private • $taro = new Person(); • $taro->name = ' '; // private  $taro->setName(' '); // public OK  protected • private •
  13. 13. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 13 private  Person.php  • $name private • $name setName() <?php class Person { private $name = ''; public function setName($name) { $this->name = trim($name); } public function sayHello() { echo 'こんにちは、' . $this->name . 'です。'; } } Person.php
  14. 14. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 14  index.php <?php require_once('Person.php'); $taro = new Person(); $taro->setName('アシアル太郎'); $taro->sayHello(); index.php
  15. 15. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 15  •  •  
  16. 16. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 16  • private • private  private •  public •  private
  17. 17. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 17  • • __construct  construct •  • __destruct() •
  18. 18. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 18  Person.php <?php class Person // アクセス修飾子の例 { private $name = ''; public function __construct($name) { $this->setName($name); } public function __destruct() { echo 'さようなら'; } public function setName($name) { $this->name = trim($name); } public function sayHello() { // あいさつするメソッド (publicなのでどこからでも呼べる) echo 'こんにちは、' . $this->name . 'です。'; } } Person.php
  19. 19. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 19  index.php <?php require_once('Person.php'); $taro = new Person('アシアル太郎'); $hanako = new Person('アシアル花子'); $taro->sayHello(); $hanako->sayHello(); index.php
  20. 20. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 20   • User • Item • Mail  • : read -> CsvFileReader • : control -> OrderController • : manage -> ConnectionManager
  21. 21. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 21  • save() • getParameter($name) • findByUserName($userName)  boolean (true/false) is has • isAvailable() • isDisabled() • hasParameter($name)  • Item isAvailable() • Database connect() • User isLoggedIn()
  22. 22. URL : http://www.asial.co.jp/ Copyright © Asial Corporation. All Rights Reserved. 22 SimpleXML  SimpleXML • XML • RSS • http://php.net/manual/ja/book.simplexml.php  RSS • dump <?php $rss = simplexml_load_file('http://blog.asial.co.jp/rss/rss2.0.php'); // var_dump($rss); // var_dump(get_class_methods($rss)); foreach ($rss->channel->item as $item) { echo htmlspecialchars($item->title, ENT_QUOTES, 'UTF-8')."<br>¥n"; // var_dump($item->guid->attributes()); }

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