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小弟我什么小弟我这里返回不了姓名和年龄

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Release: 2016-06-13 10:18:57
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我什么我这里返回不了姓名和年龄

class Person{
? private $name;
? private $sex;
? private $age;
? ?
? //构造方法
? function __construct($name="",$sex="男",$age=1){
? $this ->name=$name;
? $this ->sex=$sex;
? $this->age=$age;
? }
? ?
? //添加__get()方法
? public function __get($propertName){
? if($propertName=="sex"){
? return "保密";
? }
? else if($propertyName=="age")
? {
? if($this->age>30)
? return $this->age-10;
? ?
? else
? return $this->$propertyName;
? ?
? }
? else
? {
? return $this->$propertyName;
? }
? ?
? }
}

$person1=new Person("张三","男",20);

echo "姓名:".$person1->name."
";
echo "性别:".$person1->sex."
";
echo "年龄:".$person1->age."
";


?>

我什么我这里返回不了姓名和年龄?
返回的是下面:

姓名:
性别:保密
年龄:
?请高手解答下 谢谢!

------解决方案--------------------
propertyName !== propertName

仔细看
------解决方案--------------------
propertyName !== propertName

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