/**
* 通过父类ID获取所有的子类
* @param int $pid 父id
* @param array $category 分类集合
* @return array
*/
function recursiveCategory(int $pid,array $category){
$data = [];
foreach ($category as $item){
if($item['pid']==$pid){
$arr['id'] = $item['id'];
$arr['name'] = $item['name'];
$cate = recursiveCategory($item['id'],$category);
if(!empty($cate)){
$arr[] =$cate;
}
$data[] = $arr;
unset($arr);
}
}
return $data;
};
/**
* 通过子类获取所有的父类
* @param int $childId 子id
* @param array $category 分类集合
* @return array
*/
function getCategoryByChild(int $childId,array $category){
$data = [];
foreach ($category as $item){
if($item['id'] == $childId){
$arr['id'] =$item['id'];
$arr['name']= $item['name'];
if($item['pid']!=0){
$arr[] = getCategoryByChild($item['pid'],$category);
}
$data[]=$arr;
}
}
return $data;
}
摘自:https://blog.csdn.net/qq_43443011/article/details/106853756
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