PHP之Category类库 无限分类

include("Common/Category.class.php");
$Category = new Category("ArticleCategory",array('id','pid','name','fullname'));
$categoryList = $Category->getList();

model = D($model))
                $this->error = $model . "模型不存在！";
        }
        if (is_object($model))
            $this->model = &$model;
 
        $this->fields['cid'] = $fields['0'] ? $fields['0'] : 'id';
        $this->fields['pid'] = $fields['1'] ? $fields['1'] : 'pid';
        $this->fields['name'] = $fields['2'] ? $fields['2'] : 'name';
        $this->fields['fullname'] = $fields['3'] ? $fields['3'] : 'fullname';
    }
 
    /**
     * 获取分类信息数据
     * @param array,string  $condition  查询条件
     * @param string        $orderby    排序
     */
    private function _findAllCat($condition, $orderby = NuLL) {
        $this->rawList = $this->model->where($condition)->order($orderby)->select();
    }
 
    /**
     * 返回给定上级分类$pid的所有同一级子分类
     * @param   int     $pid    传入要查询的pid
     * @return  array           返回结构信息
     */
    public function getChild($pid) {
        $childs = array();
        foreach ($this->rawList as $Category) {
            if ($Category[$this->fields['pid']] == $pid){
                $childs[] = $Category;
            }
        }
        return $childs;
    }
 
    /**
     * 递归格式化分类前的字符
     * @param   int     $cid    分类cid
     * @param   string  $space
     */
    private function _searchList($cid = 0, $space = "") {
        $childs = $this->getChild($cid);
        //下级分类的数组
        //如果没下级分类，结束递归
        if (!($n = count($childs))){
            return;
        }
        $m = 1;
        //循环所有的下级分类
        for ($i = 0; $i < $n; $i++) {
            $pre = "";
            $pad = "";
            if ($n == $m) {
                $pre = $this->icon[2];
            } else {
                $pre = $this->icon[1];
                $pad = $space ? $this->icon[0] : "";
            }
            $childs[$i][$this->fields['fullname']] = ($space ? $space . $pre : "") . $childs[$i][$this->fields['name']];
            $this->formatList[] = $childs[$i];
            $this->_searchList($childs[$i][$this->fields['cid']], $space . $pad . "  "); //递归下一级分类
            $m++;
        }
    }
 
    /**
     * 不采用数据模型时，可以从外部传递数据，得到递归格式化分类
     * @param   array,string     $condition    条件
     * @param   int              $cid          起始分类
     * @param   string           $orderby      排序
     * @return  array           返回结构信息
     */
    public function getList($condition = NuLL, $cid = 0, $orderby = NuLL) {
        unset($this->rawList, $this->formatList);
        $this->_findAllCat($condition, $orderby);
        $this->_searchList($cid);
        return $this->formatList;
    }
 
    /**
     * 获取结构
     * @param   array            $data         二维数组数据
     * @param   int              $cid          起始分类
     * @return  array           递归格式化分类数组
     */
    public function getTree($data, $cid = 0) {
        unset($this->rawList, $this->formatList);
        $this->rawList = $data;
        $this->_searchList($cid);
        return $this->formatList;
    }
 
    /**
     * 获取错误信息
     * @return  string           错误信息字符串
     */
    public function getError() {
        return $this->error;
    }
 
    /**
     * 检查分类参数$cid,是否为空
     * @param   int              $cid          起始分类
     * @return  boolean           递归格式化分类数组
     */
    private function _checkCatID($cid) {
        if (intval($cid)) {
            return true;
        } else {
            $this->error = "参数分类ID为空或者无效！";
            return false;
        }
    }
 
    /**
     * 检查分类参数$cid,是否为空
     * @param   int         $cid        分类cid
     */
    private function _searchPath($cid) {
        //检查参数
        if (!$this->_checkCatID($cid))
            return false;
        $rs = $this->model->find($cid);                                        //初始化对象，查找上级Id；
        $this->formatList[] = $rs;                                            //保存结果
        $this->_searchPath($rs[$this->fields['pid']]);
    }
 
    /**
     * 查询给定分类cid的路径
     * @param   int         $cid        分类cid
     * @return  array                   数组
     */
    public function getPath($cid) {
        unset($this->rawList, $this->formatList);
        $this->_searchPath($cid);                                               //查询分类路径
        return array_reverse($this->formatList);
    }
 
    /**
     * 添加分类
     * @param   array         $data        一维数组，要添加的数据，$data需要包含上级分类ID。
     * @return  boolean                    添加成功，返回相应的分类ID,添加失败，返回FALSE；
     */
    public function add($data) {
        if (empty($data))
            return false;
        return $this->model->data($data)->add();
    }
 
    /**
     * 修改分类
     * @param   array         $data     一维数组，$data需要包含要修改的分类cid。
     * @return  boolean                 组修改成功，返回相应的分类ID,修改失败，返回FALSE；
     */
    public function edit($data) {
        if (empty($data))
            return false;
        return $this->model->data($data)->save();
    }
 
    /**
     * 删除分类
     * @param   int         $cid        分类cid
     * @return  boolean                 删除成功，返回相应的分类ID,删除失败，返回FALSE
     */
    public function del($cid) {
        $cid = intval($cid);
        if (empty($cid))
            return false;
        $conditon[$this->fields['cid']] = $cid;
        return $this->model->where($conditon)->delete();
    }
 
    /**
     * 删除分类
     * @param   int         $cid        分类cid
     * @return  boolean                 删除成功，返回相应的分类ID及所有子ID 数组,返回FALSE
     */
    public function getIdArr($cid){
         $cid = !empty($cid) ? intval($cid) : 0;
         if (empty($cid)) return false;
         $list = $this->getList($condition = NuLL,$cid, $orderby = NuLL);
         foreach($list as $val){
             $idArr[] = $val[$this->fields['cid']];
         }
         unset($list);
         $idArr[] = $cid;
         return $idArr;
    }
 
}
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