<?php
class MyObject {
public static $myStaticVar = 0;
function myMethod() {
self::$myStaticVar += 2;
echo self::$myStaticVar."\n";
}
}
$instanc1 = new MyObject();
$instanc1->myMethod(); //2
$instanc2 = new MyObject();
$instanc2->myMethod(); //4
static_class
原文：http://www.cnblogs.com/yhdsir/p/4649157.html
