php递归处理多维数组

$a =array (    'menu' =>        array (            0 =>                array (                    'id' => 1,                    'name' => '舆情概况',                ),            1 =>                array (                    'id' => 2,                    'name' => '舆情动态',                ),            2 =>                array (                    'id' => 3,                    'name' => '舆情分析',                ),            3 =>                array (                    'id' => 4,                    'name' => '舆情预警',                ),            4 =>                array (                    'id' => 5,                    'name' => '舆情报告',                ),            5 =>                array (                    'id' => 6,                    'name' => '微博舆情',                ),            6 =>                array (                    'id' => 10,                    'name' => '我的收藏',                ),            7 =>                array (                    'id' => 11,                    'name' => '话题追踪',                ),        ),    'config' =>        array (            0 =>                array (                    'id' => 1001,                    'name' => '菜单设置',                    'url' => 'api/menu/menuList',                    '_child' =>                        array (                            0 =>                                array (                                    'id' => 1013,                                    'name' => '菜单列表',                                    'parent_id' => 1001,                                    'url' => 'api/menu/menuList',                                ),                            1 =>                                array (                                    'id' => 1014,                                    'name' => '添加/修改',                                    'parent_id' => 1001,                                    'url' => 'api/menu/menuSave',                                ),                            2 =>                                array (                                    'id' => 1031,                                    'name' => '菜单删除',                                    'parent_id' => 1001,                                    'url' => 'api/menu/menuDel',                                ),                            3 =>                                array (                                    'id' => 1015,                                    'name' => '模块管理',                                    'parent_id' => 1001,                                    'url' => 'api/model/menuList',                                ),                            4 =>                                array (                                    'id' => 1016,                                    'name' => '模块添加/修改',                                    'parent_id' => 1001,                                    'url' => 'api/model/menuSave',                                ),                        ),                ),            1 =>                array (                    'id' => 1002,                    'name' => '关键词设置',                    'url' => 'api/keyword/keywordList',                    '_child' =>                        array (                            0 =>                                array (                                    'id' => 1017,                                    'name' => '关键词类别设置',                                    'parent_id' => 1002,                                    'url' => 'api/keyword/classifyList',                                ),                            1 =>                                array (                                    'id' => 1018,                                    'name' => '主题词设置',                                    'parent_id' => 1002,                                    'url' => 'api/keyword/keywordList',                                ),                            2 =>                                array (                                    'id' => 1019,                                    'name' => '标签设置',                                    'parent_id' => 1002,                                    'url' => 'api/keyword/tagList',                                ),                        ),                ),            2 =>                array (                    'id' => 1003,                    'name' => '报告设置',                    'url' => 'api/report/reportList',                    '_child' =>                        array (                            0 =>                                array (                                    'id' => 1022,                                    'name' => '添加报告',                                    'parent_id' => 1003,                                    'url' => 'api/report/reportSave',                                ),                            1 =>                                array (                                    'id' => 1023,                                    'name' => '编辑报告',                                    'parent_id' => 1003,                                    'url' => 'api/report/reportSave',                                ),                            2 =>                                array (                                    'id' => 1032,                                    'name' => '报告删除',                                    'parent_id' => 1003,                                    'url' => 'api/report/reportDel',                                ),                        ),                ),            3 =>                array (                    'id' => 1004,                    'name' => '预警设置',                    'url' => 'api/warn/warnList',                    '_child' =>                        array (                            0 =>                                array (                                    'id' => 1024,                                    'name' => '添加预警',                                    'parent_id' => 1004,                                    'url' => 'api/warn/warnSave',                                ),                            1 =>                                array (                                    'id' => 1025,                                    'name' => '编辑预警',                                    'parent_id' => 1004,                                    'url' => 'api/warn/warnSave',                                ),                            2 =>                                array (                                    'id' => 1033,                                    'name' => '预警删除',                                    'parent_id' => 1004,                                    'url' => 'api/warn/warnDel',                                ),                        ),                ),            4 =>                array (                    'id' => 1005,                    'name' => '角色管理',                    'url' => 'api/role/roleList',                    '_child' =>                        array (                            0 =>                                array (                                    'id' => 1026,                                    'name' => '添加/修改角色',                                    'parent_id' => 1005,                                    'url' => 'api/role/roleUpAdd',                                ),                        ),                ),            5 =>                array (                    'id' => 1033,                    'name' => '站点设置',                    'url' => 'api/site/siteList',                ),            6 =>                array (                    'id' => 1006,                    'name' => '用户管理',                    'url' => 'api/user/userList',                    '_child' =>                        array (                            0 =>                                array (                                    'id' => 1028,                                    'name' => '添加用户',                                    'parent_id' => 1006,                                    'url' => 'api/user/userUpAdd',                                ),                            1 =>                                array (                                    'id' => 1029,                                    'name' => '编辑用户',                                    'parent_id' => 1006,                                    'url' => 'api/user/userUpAdd',                                ),                        ),                ),            7 =>                array (                    'id' => 1007,                    'name' => '修改资料',                    'url' => 'api/user/userModify',                ),            8 =>                array (                    'id' => 1008,                    'name' => '操作日志',                    'url' => 'api/log/logList',                ),            9 =>                array (                    'id' => 1009,                    'name' => '任务中心',                    'url' => 'api/schedule/scheduleList',                ),            10 =>                array (                    'id' => 1032,                    'name' => '舆情待办',                ),            11 =>                array (                    'id' => 1030,                    'name' => '回收站',                ),        ),);$b = array(    0 => '1',    1 => '2',    2 => '3',    3 => '4',    4 => '5',    5 => '6',    6 => '1001',    7 => '1013',    8 => '1014',    9 => '1002',    10 => '1003');echo "<pre>";//print_r($a);print_r($b);$c = recursive_array($a['config'],$b);//print_r($c);$d = recursive_array($a['menu'],$b);//print_r($d);function recursive_array($config,$b){   if( is_array($config) ){      foreach($config as $key=>$val){                if(is_array($val)){           if(in_array($val['id'], $b)){              $config[$key]['selected'] = 1;           }else{              $config[$key]['selected'] = 0;           }           if(isset($val['_child']) && is_array($val['_child'])){              $config[$key]['_child'] = recursive_array($val['_child'],$b);           }                               }      }   }   return $config;}$new_a = [  'menu'=>$d,  'config'=>$c];