PHP Category class library unlimited categories

Category class library unlimited classification

The following is the method of using this class library

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

1. Include the class library through include

2. Instantiate the class through new

3. Call the getList() method to obtain all classification lists

4. Return: all classification lists , you can display the reference by getting fullname.

The effect is as shown:

The following is the complete source code of the class library:

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; } } ?>

The demo contains a file folder, three files. The Helper folder contains unlimited classification processing classes. The folder is placed in the Application/Common/ directory. CategoryController.class.php is the controller file. It is used to demonstrate how to use unlimited classification processing classes. When using unlimited classifications in the controller, remember to introduce use first. Common\Helper\Category;category_add.html is a view file used to demonstrate how to call unlimited categories in the template.

go_category.sql is a classification table database file, for reference only. The core fields of the classification table are id: column id, title: column name, parent_id: parent column id, is_show: whether to display in the foreground, sort: frontend sorting.

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