www.gusucode.com > Ectouch手机端网购商城系统PHP版源码程序 > ectouch/include/vendor/Category.class.php
<?php /* 访问控制 */ defined('IN_ECTOUCH') or die('Deny Access'); /** 功能:无限分类。 //测试数据 $data[]=array('cat_id'=>1,'pid'=>0,'name'=>'中国'); $data[]=array('cat_id'=>2,'pid'=>0,'name'=>'美国'); $data[]=array('cat_id'=>3,'pid'=>0,'name'=>'韩国'); $data[]=array('cat_id'=>4,'pid'=>1,'name'=>'北京'); $data[]=array('cat_id'=>5,'pid'=>1,'name'=>'上海'); $data[]=array('cat_id'=>6,'pid'=>1,'name'=>'广西'); $data[]=array('cat_id'=>7,'pid'=>6,'name'=>'桂林'); $data[]=array('cat_id'=>8,'pid'=>6,'name'=>'南宁'); $data[]=array('cat_id'=>9,'pid'=>6,'name'=>'柳州'); $data[]=array('cat_id'=>10,'pid'=>2,'name'=>'纽约'); $data[]=array('cat_id'=>11,'pid'=>2,'name'=>'华盛顿'); $data[]=array('cat_id'=>12,'pid'=>3,'name'=>'首尔'); $cat=new Category(array('cat_id','pid','name','cname')); $s=$cat->getTree($data);//获取分类数据树结构 //$s=$cat->getTree($data,1);获取pid=1所有子类数据树结构 foreach($s as $vo) { echo $vo['cname'].'<br>'; } */ class Category { //原始的分类数据 private $rawList = array(); //格式化后的分类 private $formatList = array(); //格式化的字符 private $icon = array('│', '├', '└'); //字段映射,分类id,上级分类pid,分类名称title,格式化后分类名称fulltitle private $field = array(); /** * 构造函数 * $field,字段映射,分类id,上级分类pid,分类名称title,格式化后分类名称fulltitle * 依次传递,例如在分类数据表中,分类id,字段名为cid,上级分类pid,字段名称name,希望格式化分类后输出cname, * 传递参数为,$field('cid','pid','name','cname');若为空,则采用默认值。 * @param type $field */ public function __construct($field = array()) { $this->field['id'] = isset($field['0']) ? $field['0'] : 'id'; $this->field['pid'] = isset($field['1']) ? $field['1'] : 'pid'; $this->field['title'] = isset($field['2']) ? $field['2'] : 'title'; $this->field['fulltitle'] = isset($field['3']) ? $field['3'] : 'fulltitle'; } /** * 返回给定上级分类$pid的所有同一级子分类 * @param type $pid * @param type $data * @return type */ public function getChild($pid, $data = array()) { $childs = array(); if (empty($data)) { $data = $this->rawList; } foreach ($data as $Category) { if ($Category[$this->field['pid']] == $pid) $childs[] = $Category; } return $childs; } /** * 得到递归格式化分类 * @param type $data * @param type $id * @return boolean */ public function getTree($data, $id = 0) { //数据为空,则返回 if (empty($data)) return false; $this->rawList = array(); $this->formatList = array(); $this->rawList = $data; $this->_searchList($id); return $this->formatList; } /** * 获取当前分类的路径 * @param type $data * @param type $id * @return type */ public function getPath($data, $id) { $this->rawList = $data; while (1) { $id = $this->_getPid($id); if ($id == 0) { break; } } return array_reverse($this->formatList); } /** * 无限分类核心部分,递归格式化分类前的字符 * @param type $id * @param type $space * @return type */ private function _searchList($id = 0, $space = "") { //下级分类的数组 $childs = $this->getChild($id); //如果没下级分类,结束递归 if (!($n = count($childs))) return; $cnt = 1; //循环所有的下级分类 for ($i = 0; $i < $n; $i++) { $pre = ""; $pad = ""; if ($n == $cnt) { $pre = $this->icon[2]; } else { $pre = $this->icon[1]; $pad = $space ? $this->icon[0] : ""; } $childs[$i][$this->field['fulltitle']] = ($space ? $space . $pre : "") . $childs[$i][$this->field['title']]; $this->formatList[] = $childs[$i]; //递归下一级分类 $this->_searchList($childs[$i][$this->field['id']], $space . $pad . " "); $cnt++; } } /** * 通过当前id获取pid * @param type $id * @return int */ private function _getPid($id) { foreach ($this->rawList as $key => $value) { if ($this->rawList[$key][$this->field['id']] == $id) { $this->formatList[] = $this->rawList[$key]; return $this->rawList[$key][$this->field['pid']]; } } return 0; } } ?>