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ÏÈÉèÖÃÒ»¸ö¸¸À࣬Õâ¸ö¸¸ÀàÊÇ “Dog”À࣬Õâ¸öÀàÃèÊöÁËdogµÄÌØÐÔ¡£DogÓÐ2¸öÑÛ¾¦£¬»áÅÜ£¬»á½Ð¡£¾ÍÕâÑùÃèÊöÏÈ¡£ÎÒÑøÁËÒ»Ö±¹·£¬ÊÇֻС¹·£¬·ûºÏDogÀàµÄÌØÐÔ£¬µ«ÓÐËù²»Í¬¡£ÎÒµÄС¹·ÓÐÃû×Ö£¬ÎÒµÄС¹·Ì«Ð¡ÁË£¬²»»á´óÉùµÄ½Ð£¬Ö»»áºßºß¡£ ÎÒÃÇÓü̳еĸÅÄîȥʵÏÖÕâ¸öÉè¼Æ¡£
<?php
//¹·ÓÐÁ½Ö»ÑÛ¾¦£¬»áÍôÍô½Ð£¬»áÅÜ
class Dog
{
protected $eyeNumber = 2; //
//·µ»Ø·â×°µÄÊôÐÔ·½·¨
public function getEyeNumber() {
return $this->eyeNumber;
}
//¹·»á½Ð
public function yaff() {
return "Dog yaff, wang ..wang ..";
}
//¹·»áÅÜ
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 />";
//ÕâÊÇÎÒµÄС¹·£¬½Ð"¹·¹·",Ëû»¹Ð¡²»»áÍôÍô½Ð£¬Öǻۺߺߡ£¡£
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();
?>
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