016对象——__set __get get_class_methods get_class_vars

<?php

/**
 */
//http://phpbasic.com/004object/16.php?type=admin
/*session_start();
$_SESSION['utype']=isset($_GET['type'])?$_GET['type']:FALSE;

class study
{
    private $name;
    private $age;
    public $sex;
    function say()
    {
        echo "我的名字是：" . $this->name . "我的年龄是：" . $this->age;
    }
    //对类的私有属性赋值时调用我这个魔术函数
    function __set($k, $v)
    {
        if(trim($_SESSION['utype'])=='admin'){
            $this->$k = $v;
        }else{
            die("你没有权限进行操作");
        }

    }
}
$lisi = new study();
$lisi->age = 100;
$lisi->say();*/

// 魔术方法__get() 的使用：当对象访问类的私有属性时，调用此魔术方法
/*session_start();
$_SESSION['utype']=isset($_GET['type'])?$_GET['type']:FALSE;
class study
{
    public $name;
    private $age;
    public $sex;
    public $city;

    function __construct($name, $age, $sex, $city = "")
    {
        $this->name = $name;
        $this->age = $age;
        $this->sex = $sex;
        $this->city = $city;
    }

    function say()
    {
        echo "我的名字是：" . $this->name . "我的年龄是：" . $this->age;
    }

    //对类的私有属性赋值时调用我这个魔术函数
    function __set($k, $v)
    {
        if (trim($_SESSION['utype']) == 'admin') {
            $this->$k = $v;
        } else {
            die("你没有权限进行操作");
        }
    }
    function __get($varName)
    {
        if (trim($_SESSION['utype']) == 'teacher') {
            return $this->$varName;
        } else {
            return "学生年龄保密";
        }

    }
}

$wangwu = new study("王五", '33',"男","上海");
echo "<table border=1 cellpadding=0 cellspacing=0>";
echo "<tr><td>名称</td><td>年龄</td><td>性别</td><td>城市</td>";
echo "<tr><td>{$wangwu->name}</td><td>{$wangwu->age}</td><td>{$wangwu->sex}</td><td>{$wangwu->city}</td>";
echo "</table>";*/

/*class teacher{
    private $name;
    private $age;
    private $sex;
    private $classType;
    private $access;
    function __construct($name,$age,$sex,$classType,$access)
    {
        $this->name=$name;
        $this->age=$age;
        $this->sex=$sex;
        $this->classType=$classType;
        $this->access=$access;
        $this->access=$this->access($access);
    }
    private function access($access){
        if (!is_array($access)) return FALSE;
        $methodArr=get_class_methods(__CLASS__); //获取类中的所有方法。
        foreach ($access as $v){
            if (!in_array($v,$methodArr)){
                die("权限配置错误,类中没有此方法");
            }
        }
        $publicAccess=array('say','eat');
        return array_merge($access,$publicAccess);
    }
    public function chuck(){
        $action=isset($_GET['a'])?$_GET['a']:'index';
        if (!in_array($action,$this->access)) die("你没有权限操作");
        $this->$action();
    }
    function say(){
        echo "姓名：{$this->name},年龄{$this->age},性别:{$this->sex},课程：{$this->classType}";
    }
    function eat(){
        echo "{$this->name}在吃饭";
    }
    function open(){
        echo "{$this->name}开门";
    }
    function money(){
        echo "{$this->name}可以查看我的账户";
    }
}
//$libo=new teacher("李波",32,'男','jquery',array('open'));
//$libo->open();
$libo=new teacher("李波",32,'男','jquery',array('open','money'));
$libo->chuck();
//$libo->money();
//print_r(get_class_methods($libo));//获取类的方法名*/

//魔术方法：get_class_vars()  在类外部获取类的公有属性。在内部可以获取所有的属性
class a{
    public $a1;
    private $a2;
    private $a3;
    public static function get_vars(){
        return get_class_vars(__CLASS__); //获取类的所有属性
    }
}
//print_r(a::get_vars());//输出：Array ( [a1] => [a2] => [a3] => )
print_r(get_class_vars('a'));//输出：Array ( [a1] => )  在外部使用智能获取公有的属性