阿权的书房

<?
@session_start();
echo <<<EOT
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="Content-Language" content="UTF-8" />
EOT;

class guess{

 var $num=0;
 var $step=0;
 var $newgame=false;
 var $message="";

 function guess(){
 
   if(!isset($_SESSION['num'])){
     $_SESSION['num']=rand(0,100);
     $_SESSION['step']=0;
     $this->newgame=true;
   }
   $this->num=$_SESSION['num'];
   $this->step=$_SESSION['step'];
   //echo $this->num;
 }

 function add_step(){
   $this->step++;
   $_SESSION['step']=$this->step;
 }

 function check(){
 
   if($this->newgame==true){
     $this->message="游戏开始";
     $this->show_form();
   }else{
     if(isset($_POST['mynum'])){
       $this->add_step();
       $this->message="你猜了".$this->step."次，";
       if($_POST['mynum']==$this->num){
         $this->show_ok();
       }else{
         if($_POST['mynum']>$this->num)
           $this->message.="你猜的数过大";
         else
           $this->message.="你猜的数过小";

         $this->show_form();
       }
     }else{
       $this->show_form();
     }
   }
 }

 function show_form(){
   $form=$this->message.'<form method=post action="">
     <input type="text" name="mynum"><input type="submit">
   </form>';
   echo $form;
 }

 function show_ok(){
   unset($_SESSION['num']);
   unset($_SESSION['step']);
   $form=$this->message.'你猜对了！<a href="?">重新开始</a>';
   echo $form;
 }
}

$a=new guess;
$a->check();
?>