PHP 无限级分类

有一段时间没用过无限极分类，不巧今天又用到，所以特地去翻箱回顾以前。为了避免以后找起来麻烦，特地贴在这里。

unlimitedForLevel($cate, $html, $v['id'], $level + 1));
   }
  }
  return $arr;
 }
 
 static public function unlimitedForlayer($cate, $name = 'child', $pid = 0){
  $arr = array();
  foreach($cate as $v){
   if( $v['pid'] == $pid){
    $v[$name] = self::unlimitedForlayer($cate, $name, $v['id']);
    $arr[] = $v;
   }
  }
  return $arr;
 }
 
 static public function getParents($cate, $id){
  $arr = array();
  foreach($cate as $v){
   if($v['id'] == $id){
    $arr[] = $v;
    $arr = array_merge(self::getParents($cate, $v['pid']), $arr);
   }
  }
  return $arr;
 }
 
 static public function getChildrenId($cate, $pid){
  $arr = array();
  foreach($cate as $v){
   if($v['pid'] == $pid){
    $arr[] = $v['id'];
    $arr = array_merge($arr, self::getChildrenId($cate, $v['id']));
   }
  }
  return $arr;
 }
 
 static public function getChildren($cate, $pid){
  $arr = array();
  foreach($cate as $v){
   if($v['pid'] == $pid){
    $arr[] = $v;
    $arr = array_merge($arr, self::getChildren($cate, $v['id']));
   }
  }
  return $arr;
 }
}
?>

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