PHP使用接口_Tag标签_程序员俱乐部

interfaceIsay{publicfunctionsay();}classhelloimplementsIsay{publicfunctionsay(){echo"hello";}}classworldimplementsIsay{publicfunctionsay(){echo"world";}}functiontest_say(Isay$isay){$isay->say();}test_say(newhello());//output:"hello"test_say... 查看全文