PHP

<br />abstract_car.php abstract class car { abstract public function getMaximunSpeed(); }<br /> <br />FastCar.php include_once 'abstract_car.php'; class FastCar extends car { protected $speedLimit; public function __construct($speedLim

<br />interface ISpeedInfo { function getMaximumSpeed(); } class Car { //任何基类方法 } class FastCar extends Car implements ISpeedInfo { function getMaximumSpeed() { return 200; } } class BadCar extends Car { function BadCarInfo

class MyObject { public static $myVar = 0; function myMethod() { self::$myVar+=2; echo self::$myVar . "/n"; } } class MyOtherObject extends MyObject { function myMethod() { echo "基类myMethod被重写"; } function myOtherMet