这篇文章主要为大家详细介绍了如何利用PHP实现处理三级分类数据,文中的示例代码讲解详细,具有一定的借鉴价值,有需要的小伙伴可以参考一下 
目录
一、原始数据二、函数处理三、方法补充一、原始数据
function getDatas(){ return [['component' => 'system','redict' => '/system','path' => '/system','hidden' => 1,'name' => '系统管理','children' => [['component' => 'user','redict' => '/user','path' => '/user','hidden' => 1,'name' => '用户管理','children' => [['component' => 'user_list','redict' => '/user_list','path' => '/user_list','hidden' => 1,'name' => '用户列表',],['component' => 'role','redict' => '/user_role','path' => '/user_role','hidden' => 1,'name' => '角色列表',],['component' => 'perm','redict' => '/perm','path' => '/perm','hidden' => 1,'name' => '权限列表',],]],['component' => 'data','redict' => '/data','path' => '/data','hidden' => 1,'name' => '数据管理','children' => [['component' => 'report','redict' => '/report','path' => '/report','hidden' => 1,'name' => '分日报表',],['component' => 'hour_report','redict' => '/hour_report','path' => '/hour_report','hidden' => 1,'name' => '分时报表',],['component' => 'month_report','redict' => '/month_report','path' => '/month_report','hidden' => 1,'name' => '分月报表',],]],['component' => 'resource','redict' => '/resource','path' => '/resource','hidden' => 1,'name' => '资源管理','children' => [['component' => 'res_list','redict' => '/res_list','path' => '/res_list','hidden' => 1,'name' => '资源列表']]]]]]}二、函数处理
function deal(){ $datas = getDatas(); $level_1_tree = []; foreach($datas as $data_level_1){ $data_level_1_arr['component'] = $data_level_1['component']; $data_level_1_arr['redict'] = $data_level_1['redict']; $data_level_1_arr['path'] = $data_level_1['path']; $data_level_1_arr['meta'] = [ 'title' => $data_level_1['name'], 'hidden' => $data_level_1['hidden'] ]; $level_2_tree = []; if(isset($data_level_1['children']) && !empty($data_level_1['children'])) { foreach ($data_level_1['children'] as $data_level_2) { $data_level_2_arr['component'] = $data_level_2['component']; $data_level_2_arr['redict'] = $data_level_2['redict']; $data_level_2_arr['path'] = $data_level_2['path']; $data_level_2_arr['meta'] = [ 'title' => $data_level_2['name'], 'hidden' => $data_level_2['hidden'] ]; $level_3_tree = []; if (isset($data_level_2['children']) && !empty($data_level_2['children'])) { foreach ($data_level_2['children'] as $data_level_3) { $data_level_3_arr['component'] = $data_level_3['component']; $data_level_3_arr['redict'] = $data_level_3['redict']; $data_level_3_arr['path'] = $data_level_3['path']; $data_level_3_arr['meta'] = [ 'title' => $data_level_3['name'], 'hidden' => $data_level_3['hidden'] ]; array_push($level_3_tree, $data_level_3_arr); unset($data_level_3_arr); } $data_level_2_arr['children'] = $level_3_tree; } array_push($level_2_tree, $data_level_2_arr); unset($data_level_2_arr); } $data_level_1_arr['children'] = $level_2_tree; } array_push($level_1_tree, $data_level_1_arr); unset($data_level_1_arr); } print_r($level_1_tree); } deal();三、方法补充
除了上文的方法，小编还为大家整理了PHP处理三级分类数据的其他方法，希望对大家有所帮助
示例代码
<?php//瞎写的// 链接数据库$link = mysqli_connect('localhost','root','root');if($link == null){ exit;}mysqli_select_db($link,'test');$link->query("SET NAMES utf8");$sql = "select * from tp_goods_categorys";$res = mysqli_query($link,$sql);while($res && $row = mysqli_fetch_assoc($res)) { $list[] = $row;}echo '<pre>';print_r(res($list)); function res($items){ $tree = array(); foreach($items as $key =>$val){ $list = explode(',',$val['categorys_path']); switch(count($list)){ case 1: $tree[$val['id']] = $val; break; case 2: $tree[$val['categorys_pid']]['son'][$val['id']] = $val; break; case 3: $tree[$list[1]]['son'][$list[2]]['son'] = $val; break; } } return $tree;}<?php//递归$array = array(array('id' => 1, 'pid' => 0, 'name' => '湖北省'),array('id' => 2, 'pid' => 0, 'name' => '北京市'),array('id' => 3, 'pid' => 1, 'name' => '武汉市'),array('id' => 4, 'pid' => 2, 'name' => '朝阳区'),array('id' => 5, 'pid' => 2, 'name' => '通州区'),array('id' => 6, 'pid' => 4, 'name' => '望京'),array('id' => 7, 'pid' => 4, 'name' => '酒仙桥'),array('id' => 8, 'pid' => 3, 'name' => '武昌区'),array('id' => 9, 'pid' => 1, 'name' => '武安市'),);function cation($arr,$num=0,$m=1){ $list = []; foreach($arr as $k=>$v){ if($v['pid'] === $num){ $v['level'] = $m; $v['son'] = cation($arr,$v['id'],$m+1); $list[] = $v; } } return $list;}$list = cation($array);echo '<pre>';print_r($list);echo '</pre>';另一种需求
（重组一维数组）
// 处理分类数据 栏目分级 public function allMenu($cates,$pid=0,$level=0){ static $cateArr = array(); for($i=0;$i<count($cates);$i++){ if($cates[$i]['pid']==$pid){ $cates[$i]['level']=$level; $cateArr[]=$cates[$i]; $this->allMenu($cates,$cates[$i]['id'],$level+1); } } return $cateArr; }
