westdc-zf1/application/models/news.php

<?php
class news
{
	var $db;  //传入PDO对象

	function __construct($db)
	{
		$this->db = $db;
	}

	/*
	递归获得所有栏目
	*/
	function getAllCategory($hide = 0){
		
		$sql = "SELECT c.* FROM news_category c
				WHERE display>$hide
				ORDER BY displayorder asc";
		$re = $this->db->query($sql);
		$categorys = $re->fetchAll();
		
		return $categorys;
	}
	
}