{
echo h(parent::CONST_VALUE) . ',';
echo h(self::CONST_VALUE) . ',';
echo h(static::CONST_VALUE) . '<br>';
}
}
// Secondクラスを継承したThirdクラスを定義する
class Third extends Second
{
const CONST_VALUE = 'third';
// 親クラスのshow()メソッドを呼び出す
public function show()
{
parent::show();
}
}
echo '<p>';
echo 'Secondクラスのshow()メソッドを呼び出す:' . '<br>';
$second = new Second();
$second->show();
echo '</p>';
echo '<p>';
echo 'thirdクラスのshow()メソッドを呼び出す:' . '<br>';
$third = new Third();
$third->show();
echo '</p>';
?>
</body>
</html>
}
public function displayText()
{
echo $this->text;
}
public static function say()
{
echo self::$silence;
}
}
class Second extends First
{
public function displayText()
{
echo 'second ' . $this->text . '<br />';
parent::displayText();
}
}
class Third extends Second
{
}
echo First::$silence;
First::$silence = 'ooooo';
echo First::$silence;
echo Second::$silence;
Third::say();
// $first = new First();
// $first->text = 'world';
// $first->displayText();
// $second = new Second('asdfasdfljkqw qwer qlwejrqwer');
// $second->displayText();
