PHP延迟静态绑定示例分享_php技巧

<?phpclass 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BC456789abcdefA123456