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PHP Category class library unlimited categories
- coldplay.xixiforward
- 2020-06-06 16:11:383990browse
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:
<?php
/**
* 类功能：php无限分类
* author：252588119@qq.com
* 使用方法见：http://liqingbo.cn/blog-434.html
*/
class Category {
private $model; //分类的数据表模型
private $rawList = array(); //原始的分类数据
private $formatList = array(); //格式化后的分类
private $error = ""; //错误信息
private $icon = array(' │', ' ├ ', ' └ '); //格式化的字符
private $fields = array(); //字段映射，分类id，上级分类pid,分类名称name,格式化后分类名称fullname
/**
* 构造函数，对象初始化
* @param array,object $model 数组或对象，基于TP3.0的数据表模型名称,若不采用TP，可传递空值。
* @param array $field 字段映射，分类cid，上级分类pid,分类名称,格式化后分类名称fullname
*/
public function __construct($model = '', $fields = array()) {
if (is_string($model) && (!empty($model))) {
if (!$this->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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