php中使用static方法

 <?php

 class Char{
     public static $number = 0;
     public static $name;

     function __construct($what){
         self::$name = $what;
     }
     public static function  Join(){
         self::$number++;
         echo self::$number," Is :",self::$name,"<br />";
     }

 }

 $test = new Char('a');
 Char::Join();
 #注意， 在静态方法中不能访问非静态变量

#Char::Join();
#$test->Join();
#$test::Join();
可以这样调用