PHP类和对象

// Dog class
 class dog {
    // Keep name and age private - we don't want to be able to change these!
    private $name;

    private $age;

    // Constructor allows us to make an object of this class with given parameters.
    function __construct($name, $age){
        $this->name = $name;
        $this->age = $age;
        echo 'Dog named: '.$this->name.' is '.$this->age.' years old.';
    }

    // Destructor gets called when the item is deleted.
    function __destruct(){
        echo 'Dog '.$this->name.' has ran off into the sunset';
    }

    function getname() {
        echo $this->name;
    }

    function getage() {
        echo $this->age;
    }

 }

 $mydog = new dog("Spot", "8");
 echo $mydog->getname();
 echo $mydog->getage();