<?php
/**
*无限级分类
*/
class Category{
/**
*无限极分类，压到一个数组
*/
static function cateToOne($cate, $html='--', $pid=0, $level=0){
$arr = array();
foreach($cate as $k =>$v){
if($v['pid'] == $pid){
$v['level'] = $level + 1;
$v['html'] = str_repeat($html, $level);
$arr[] = $v;
unset($cate[$k]);
$arr = array_merge($arr, self::cateToOne($cate, $html, $v['id'], $level+1));
}
}
return $arr;
}
/**
*无限极分类，压成多维数组
*/
static function cateToArray($cate, $child='child', $pid=0){
$arr = array();
foreach($cate as $k => $v){
if($v['pid']==$pid){
unset($cate[$k]);
$v[$child] = self::cateToArray($cate, $child, $v['id']);
$arr[] = $v;
}
}
return $arr;
}
/**
*通过子集查找所有父类，返回一个一位数组
*/
static function getParents($cate, $id){
$arr = array();
foreach($cate as $k => $v){
if($v['id'] == $id){
$arr[] = $v;
unset($cate[$k]);
$arr = array_merge(self::getParents($cate, $v['pid']), $arr);
}
}
return $arr;
}
/**
*传递一个父级分类ID返回所有子分类ID
*/
static function getChildsId($cate, $pid){
$arr = array();
foreach($cate as $k => $v){
if($v['pid']==$pid){
$arr[] = $v['id'];
unset($cate[$k]);
$arr = array_merge($arr, self::getChildsId($cate, $v['id']));
}
}
return $arr;
}
/**
*传递一个父级分类ID返回所有子分类
*/
static function getChilds($cate, $pid){
$arr = array();
foreach($cate as $k => $v){
if($v['pid']==$pid){
$arr[] = $v;
unset($cate[$k]);
$arr = array_merge($arr, self::getChilds($cate, $v['id']));
}
}
return $arr;
}
}
?>后盾网教程里面的无限类，自己还没用完，所以也没敲完代码，发现就转过来了，本站就使用的这个类。