<?php
/**
* 分类信息格式化工具类
*/
class Category {
protected $sonName;
protected $parentName;
/**
* 初始化工作
* @param string $son 子类标识的名称
* @param string $parent 父类标识的名称
*/
public function __construct($son = 'id', $parent = 'pid') {
$this->sonName = $son;
$this->parentName = $parent;
}
/**
* 根据传递的父类ID获取所有的子级分类
* 组合一维数组
* @param [type] $data 分类数组
* @param integer $pid 父类id
* @param integer $lev 父类所属层级
* @return [type] 格式化后的数组信息
*/
public function unlimitedForLevel($data, $pid = 0, $lev = 0) {
$arr = array();
foreach($data as $v) {
if($v[$this->parentName] == $pid) {
$v['lev'] = $lev + 1;
$arr[] = $v;
$arr = array_merge($arr, self::unlimitedForLevel($data, $v[$this->sonName], $lev + 1));
}
}
return $arr;
}
/**
* 根据传递的父类ID获取所有的子级分类
* 组合多维数组
* @param [type] $data 分类数组
* @param integer $pid 父类id
* @return [type] 格式化后的数组信息
*/
public function unlimitedForLayer($data, $pid = 0) {
$arr = array();
foreach($data as $v) {
if($v[$this->parentName] == $pid) {
$v['children'] = self::unlimitedForLayer($data, $v[$this->sonName]);
$arr[] = $v;
}
}
return $arr;
}
/**
* 根据传递子类ID获取所有的父级分类
* @param [type] $data 分类数组
* @param integer $id 子类id
* @return [type] 父类数组信息
*/
public function getParents($data, $id) {
$arr = array();
foreach($data as $v) {
if($v[$this->sonName] == $id) {
$arr[] = $v;
$arr = array_merge(self::getParents($data, $v[$this->parentName]), $arr);
}
}
return $arr;
}
/**
* 根据传递的父类ID获取所有的子级分类ID
* 注意返回值中不包括传递进来的父类ID
* @param [type] $data 分类数组
* @param [type] $pid 父类id
* @return [type] 子类id数组
*/
public function getChildsID($data, $pid) {
$arr =array();
foreach($data as $v) {
if($v[$this->parentName] == $pid) {
$arr[] = $v[$this->sonName];
$arr = array_merge($arr, self::getChildsID($data, $v[$this->sonName]));
}
}
return $arr;
}
/**
* 根据传递的子类ID获取所有的父类ID
* 注意返回值中不包括传递进来的子类ID
* @param [type] $data 分类数组
* @param [type] $id 子类id
* @return [type] 父类id数组
*/
public function getParentsID($data, $id) {
$arr = array();
foreach($data as $v) {
if($v[$this->sonName] == $id) {
$arr[] = $v[$this->parentName];
$arr = array_merge($arr, self::getParentsID($data, $v[$this->parentName]));
}
}
return $arr;
}
}
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