PHP_对象的实例化

<?php

/*如何实例化对象
 * $对象名=new 类名称（）
 *
 *
 *
 *
 *
 *
 *
 * */
        class Person
        {
            //成员属性

            var $name;
            var $age;
            var $sex;
            var $phone;


            //成员方法

            function say()
            {
                    echo"我在说话";
            }

            function run()
            {
                    echo"我在走路";
            }

            function eat()
            {
                    echo "我在吃饭";
            }

            function work()
            {
                    echo "我在工作";
            }

            function study()
            {

            }


        }

        class Phone
        {
            var $manufacturers;
            var $color;
            var $size;

            function call()
            {

            }

            function answerCall()
            {

            }

            function sendMessage($person,$message)
            {
                $person->phone->recieveMessage($message);
            }

            function recieveMessage($message)
            {
                  echo "接收的信息是：".$message."";
            }

            function playMusic()
            {

            }

        }

        $p1=new Person();
        $p2=new Person();
        $p3=new Person();

        $phone1=new Phone();
        $phone2=new Phone();
        $phone3=new Phone();

        $p1->name="张三";
        $p2->name="李四";
        $p3->name="王五";

        $phone1->manufacturers="nokia";
        $phone2->manufacturers="semmens";
        $phone3->manufacturers="samsung";

        $p1->phone=$phone1;
        $p2->phone=$phone2;
        $p3->phone=$phone3;

        $p1->phone->sendMessage($p2,"hello");

       /* $p1->say();
        $p2->eat();
        $p3->run(); */

?>