php学习类的使用

<?php
class MyPc {
	var $hpf;
	public $name;
	/*function MyPc ($name='') {
		$this->name=$name;
	}*/
	function __construct($name=''){
		$this->name=$name;
	}
	function newfu(){
		echo "this is ok!";
	}
	function game () {
		return $this->name."play games!<br>";
	}
	function compute () {
		return "编程！";
	}
	function __destruct(){
		echo "<br>------------------------".$this->name;
	}
}
$pc1=new MyPc("家用电脑");
$pc2=new MyPc("公司电脑");
$pc3=new MyPc("");

echo $pc1->game();
$pc1=null;
echo "<br>".$pc2->name;
?>