打怪游戏（调用类实例）

Hero.class.php文件中
<?php
class Hero
{
   public $blood;
   public $gongji;
   public $jineng = array();
   public $level;
   public $name;
   public $money;
       
//构造函数，初始化成员
    function __construct($n)
    {
       $this->blood = 100;
       $this->gongji = 10;
       $this->jingyan = 0;
       $this->level = 1;
       $this->money = 100;
       $this->name = $n;
    }
    
//打怪函数    
function DaGuai()
{
    //获取经验
    //$jy = Math.floor(rand(10,100));
    $jy = floor(rand(10,100));
    
    if($jy>=30)
    {
    //将该英雄经验增加
    $this->jingyan = $this->jingyan+$jy;
    //判断是否要升级
       if($this->jingyan >= 50)
       {
        $this->level +=1;
        $this->jingyan = 0;
        $this->gongji +=5;
        $this->blood +=20;
        }
       echo $this->name."打死了一个怪物，获得了{$jy}点经验";
    }
    else
      {
         if($this->level = 1)
         {}
         else
         {
           $this->level -=1;
         
         }
         echo "你被怪物打死了，等级减一，等级降为{$this->level}";
    
      }
}
    
     
//学习技能
function XueXi()
{
    //花钱
    $hf = floor(rand(0,20));
    $n = floor(rand(0,5));
    // 技能哭里选择技能
    switch($n)
    {
          case 0:
          array_push($this->jineng,"冲锋");    
          break;
          case 1:
          array_push($this->jineng,"嘲讽");    
          break;
          case 2:
          array_push($this->jineng,"突刺");    
          break;
          case 3:
          array_push($this->jineng,"沉默");    
          break;
          case 4:
          array_push($this->jineng,"变羊");    
          break;
          case 5:
          array_push($this->jineng,"加血");    
          break;      
    }    
}

//查看英雄信息
     function Show()
     {
        echo "英雄的名称：{$this->name}<br />";
        echo "英雄的血量：{$this->blood}<br />";     
        echo "英雄的公鸡：{$this->gongji}<br />";     
        echo "英雄的经验：{$this->jingyan}<br />";     
        echo "英雄的等级：{$this->level}<br />";    
        echo "技能为："; 
        //不可以echo "技能为：{$this->jineng}<br />";因为jineng是数组，需要foreach遍历
        foreach($this->jineng as $v)
        {
            echo $v.",";
        }          
     }

}


?>

play.php文件中（同一文件夹）

<?php
include "Hero.class.php";
$r = new Hero("赵大牛");
$r->DaGuai();
$r->XueXi();
$r->Show();

$r->DaGuai();
$r->XueXi();
$r->Show();

$r->DaGuai();
$r->XueXi();
$r->Show();

$r->DaGuai();
$r->XueXi();
$r->Show();


$r->DaGuai();
$r->XueXi();
$r->Show();

?>

结果