Home >php教程 >php手册 >PHP静态推延绑定简单示例

PHP静态推延绑定简单示例

WBOY
WBOYOriginal
2016-06-13 09:32:441125browse

   PHP静态延迟绑定简单示例

  没怎么用过这个新特性,其实也不算新啦,试试吧,现在静态类的继承很方便了

  class A {

  protected static $def = '123456';

  public static function test() {

  echo get_class(new static);

  }

  public static function test2() {

  echo static::$def;

  }

  }

  class B extends A {

  protected static $def = '456789';

  }

  class C extends A {

  protected static $def = 'abcdef';

  }

  echo B::test();

  echo '

  ';

  echo C::test();

  echo '

  ';

  echo B::test2();

  echo '

  ';

  echo C::test2();

  echo '

  ';

  echo A::test();

  echo '

  ';

  echo A::test2();

  echo '

  ';

  // 输出结果

  B

  C

  456789

  abcdef

  A

  123456

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn