PHP ʖ²ἯTH º󍋼/A Ղ 14. ӫ¶ԏ󼯔D :: עҢ class A {function example() {echo "I am the original function A::example(). br \n";}} class B extends A {function example() {echo "I am the redefined function B::example(). br \n"; A::example();}} // there is no object of class A. // this will print // I am the original function A::example(). br A::example(); // create an object of class B. $b = new B; // this will print // I am the redefined function B::example(). br // I am the original function A::example(). br $b- example(); º󍋼/A ưµ㼯A ¹¹Ԭº¯ʽ ɏһ¼¶ parent