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This article mainly introduces the relevant knowledge of PHP infinite classification, which has a good reference value. Let’s take a look at it with the editor below
I haven’t used Infinitus Classification for a while, but unfortunately I used it again today, so I went through the box to review the past. In order to avoid trouble finding it in the future, I post it here.
<?php /** * 无限级分类 类 */ class Category{ /** * 返回一维数组 * @param [type] $cate 要递归的数组 * @param string $html 子级分类前要显示的缩进符号。默认 '─' * @param integer $pid 父级分类ID。默认为 0,表示顶级分类 * @param integer $level level级,配合 $html 显示足够的缩进。默认为 1,表示顶级分类 * @return [type] [description] */ static public function unlimitedForLevel($cate, $html = '─', $pid = 0, $level = 1){ $arr = array(); foreach($cate as $v){ if($v['pid'] == $pid){ $v['level'] = $level; $v['html'] = str_repeat($html, $level - 1); $arr[] = $v; $arr = array_merge($arr, $this->unlimitedForLevel($cate, $html, $v['id'], $level + 1)); } } return $arr; } /** * 返回多维数组 * @param [type] $cate 要递归的数组 * @param string $name 子级分类在父分类数组中的 key * @param integer $pid 父级分类ID。默认为0,表示顶级分类 * @return [type] [description] */ static public function unlimitedForlayer($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; } /** * 传递子分类ID返回所有父级分类 * @param [type] $cate 要递归的数组 * @param [type] $id 子分类ID * @return [type] [description] */ static public function getParents($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; } /** * 传递父级分类ID返回所有子分类ID * @param [type] $cate 要递归的数组 * @param [type] $pid 父级分类ID * @return [type] [description] */ static public function getChildrenId($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; } /** * 传递父级分类ID返回所有子级分类 * @param [type] $cate 要递归的数组 * @param [type] $pid 父级分类ID * @return [type] [description] */ static public function getChildren($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; } } ?>
The above is the entire content of this article, I hope it will be helpful to everyone's study.
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