sulin

摘要： 1.展示类的继承和静态的方法定义和调用函数Say(); } function addItem($product,$num){ $this->items[$product]+=$num; } function reomveItem($product,$num){ if($this->items[$product]>$num){ $this->items[$product]-=$num; return true; }elseif($this->items[$product]==$num){ unset($this->items[$product]); ... 阅读全文