PHP学习笔记二十二【静态方法二】

<?PHP
  class Student{
    public static $fee;
    public $name;
    //构造函数
    function __construct($name)
    {
       $this->name=$name;
    }
    //入学,静态方法无法操作非静态变量，因为静态方法（变量）是属于类，而非静态的成员变量时属于对象的
   static    function  enterSchool($ifee)
    {
      self::$fee+=$ifee;
    }
  }
  $student1=new Student("张三");
   Student::enterSchool(100);
  //$student1->enterSchool(100);
  $student2=new Student("李四");
  Student::enterSchool(100);
  echo "<br/>总学费".Student::$fee;
?>