<?php

 #访问静态变量

 #类外部: 类名::$类变量名

 #类内部: 娄名::$类变量名或self::$类变量名

 class Char{

     public static $number = 0;

     public $name;

     function __construct($what){

         $this->name = $what;

     }

     function Join(){

         self::$number++;

         echo self::$number," Is :",$this->name,"<br />";

     }

 }

 $test = range('a','z');

 foreach($test as $values){

     $what = new Char($values);

     $what->Join();

 }