<?php//狗有两只眼睛,会汪汪叫,会跑class Dog{ protected $eyeNumber = 2; // //返回封装的属性方法 public function getEyeNumber() { return $this->eyeNumber; } //狗会叫 public function yaff() { return "Dog yaff, wang ..wang .."; } //狗会跑 public function run() { return "Dog run..running ..."; }}$dog = new Dog();echo "dog have " . $dog->getEyeNumber() . " eyes. <br />";echo $dog->yaff() . "<br />" . $dog->run();echo "<br /><br /><br /><br />";//这是我的小狗,叫"狗狗",他还小不会汪汪叫,智慧哼哼。。class MyDog extends Dog{ private $name = ""; public function getName() { return $this->name; } public function yaff() { return $this->name . " yaff, heng...heng .."; } }$myDog = new MyDog();echo $myDog->getName() . " have " . $myDog->getEyeNumber() . " eyes. <br />";echo $myDog->yaff() . "<br />" . $myDog->run();?> |