蝙蝠岛资源网

PHP带节点操作的无限分类实现方法详解
网络编程 2025/10/28 佚名
2 0
蝙蝠岛资源网 Design By www.hbtsch.com

本文实例讲述了PHP带节点操作的无限分类实现方法。分享给大家供大家参考，具体如下：

包含（移动多个节点；移动单个节点；删除多个节点；删除单个节点；新增节点），另附数据库表结构

一、db sql语句

//db used for php无限分类
create table tree(
  id int(10) not null primary key auto_increment,
  name varchar(255) not null,
  lft int(10) not null default 0,
  rgt int(10) not null default 0,
  status int(1) not null default 0,
  index lft (`lft`),
  index rgt (`rgt`),
  index status(`status`)
)charset utf8;
insert into tree value (null,'Food',1,18,0);
insert into tree value (null,'Fruit',2,11,0);
insert into tree value (null,'Red',3,6,0);
insert into tree value (null,'Cherry',4,5,0);
insert into tree value (null,'Yellow',7,10,0);
insert into tree value (null,'Banana',8,9,0);
insert into tree value (null,'Meat',12,17,0);
insert into tree value (null,'Beef',13,14,0);
insert into tree value (null,'Pork',15,16,0);

二、php文件

<"SELECT name from tree where id = $cid";
    $result = mysql_query($sql);
    $row = mysql_fetch_assoc($result);
    $croot = $row['name'];
    unset($sql);
  }
  delete_tree_item($cdata,1);
  insert_tree($pdata,$ndata,$croot,1);
}
/**
 *用于插入一个节点
 *@param array $pdata = array('id'=>主键,'root'=>名称) 二选一 父节点(为空时插入最大的父节点)
 *@param array $ndata = array('id'=>主键,'root'=>名称) 二选一 下一个兄弟节点（没有兄弟的时候就不用）
 *@param string $name string 新插入的名称
 *@param int $update 默认为空，为1时更新插入
 */
function insert_tree($pdata=array(),$ndata=array(),$name,$update='') {
  if(!$name) return;
  $pid  = $pdata['id'] "SELECT lft, rgt FROM tree WHERE id = '{$pid}';" : "SELECT lft, rgt FROM tree WHERE name = '{$proot}';";
    $result = mysql_query($sql);
    $row  = mysql_fetch_assoc($result);
    unset($sql);
    //新节点
    $lft = $row['rgt'];
    $rgt = $lft+1;
    if(!$update) {
      $sql = "insert into tree values (null,'{$name}',$lft,$rgt,0);";
      $sql1 = "update tree set rgt = rgt+2 where rgt >= {$row['rgt']}";
      $sql2 = "update tree set lft = lft+2 where lft >= {$row['rgt']}";
    } else {
      $sql = "update tree set lft=$lft,rgt=$rgt,status=0 where name ='{$name}';";
      $sql1 = "update tree set rgt = rgt+2 where status =0 and rgt >= {$row['rgt']}";
      $sql2 = "update tree set lft = lft+2 where status =0 and lft >= {$row['rgt']}";
    }
    mysql_query($sql1);
    mysql_query($sql2);
    mysql_query($sql); //last add new data
  }
  //有父有兄
  if(($pid || $proot) && ($nid || $nroot)) {
    $sql  = $nid "SELECT lft, rgt FROM tree WHERE id = '{$nid}';" : "SELECT lft, rgt FROM tree WHERE name = '{$nroot}';";
    $result = mysql_query($sql);
    $row  = mysql_fetch_assoc($result);
    unset($sql);
    //新节点
    $lft = $row['lft'];
    $rgt = $lft+1;
    if(!$update) {
      $sql = "insert into tree values (null,'{$name}',$lft,$rgt,0);";
      $sql1 = "update tree set rgt = rgt+2 where rgt >= {$row['lft']};";
      $sql2 = "update tree set lft = lft+2 where lft >= {$row['lft']};";
    } else {
      $sql = "update tree set lft=$lft,rgt=$rgt,status=0 where name ='{$name}';";
      $sql1 = "update tree set rgt = rgt+2 where status = 0 and rgt >= {$row['lft']};";
      $sql2 = "update tree set lft = lft+2 where status = 0 and lft >= {$row['lft']};";
    }
    mysql_query($sql1);
    mysql_query($sql2);
    mysql_query($sql); //last add new data
  }
  //无父无兄(大佬)
  if(!($pid || $proot) && !($nid || $nroot)) {
    $sql  = "SELECT max(`rgt`) as rgt FROM tree;";
    $result = mysql_query($sql);
    $row  = mysql_fetch_assoc($result);
    unset($sql);
    //新节点
    $lft = 1;
    $rgt = $row['rgt']+2;
    if(!$update) {
      $sql = "insert into tree values (null,'{$name}',$lft,$rgt,0);";
      $sql1 = "update tree set rgt = rgt+1";
      $sql2 = "update tree set lft = lft+1";
    } else {
      $sql = "update tree set lft=$lft,rgt=$rgt,status=0 where name ='{$name}';";
      $sql1 = "update tree set rgt = rgt+1 where status = 0";
      $sql2 = "update tree set lft = lft+1 where status = 0";
    }
    mysql_query($sql1);
    mysql_query($sql2);
    mysql_query($sql); //last add new data
  }
}
/**
 *用于删除一个节点(包括子节点)
 *@param array $data = array('id'=>主键,'root'=>名称) 二选一
 *@param int $update 默认为空，为1时逻辑删除
 */
function delete_tree_all($data,$update='') {
  $id  = $data['id'] "SELECT lft, rgt FROM tree WHERE id = '{$id}';" : "SELECT lft, rgt FROM tree WHERE name = '{$root}';";
  $result = mysql_query($sql);
  $row  = mysql_fetch_assoc($result);
  unset($sql);
  $middle = $row['rgt']-$row['lft']+1;
  if(!$update) {
    $sql  = "delete from tree where lft BETWEEN '" . $row['lft'] . "' AND '" . $row['rgt'] ."'";
    $sql1  = "update tree set rgt = rgt-{$middle} where rgt > {$row['rgt']}";
    $sql2  = "update tree set lft = lft-{$middle} where lft > {$row['rgt']}";
  } else {
    $sql  = "update tree set status = 1 where lft BETWEEN '" . $row['lft'] . "' AND '" . $row['rgt'] ."'";
    $sql1  = "update tree set rgt = rgt-{$middle} where status=0 and rgt > {$row['rgt']}";
    $sql2  = "update tree set lft = lft-{$middle} where status=0 and lft > {$row['rgt']}";
  }
  mysql_query($sql);
  mysql_query($sql1);
  mysql_query($sql2);
}
/**
 *用于删除一个节点(不包括子节点)
 *@param array $data = array('id'=>主键,'root'=>名称) 二选一
 *@param int $update 默认为空，为1时逻辑删除
 */
function delete_tree_item($data,$update='') {
  $id  = $data['id'] "SELECT id,lft, rgt FROM tree WHERE id = '{$id}';" : "SELECT id,lft, rgt FROM tree WHERE name = '{$root}';";
  $result = mysql_query($sql);
  $row  = mysql_fetch_assoc($result);
  unset($sql);
  if(!$update) {
    $sql = "delete from tree where id = {$row['id']};";
    $sql1 = "update tree set rgt = rgt-1,lft = lft -1 where lft > {$row['lft']} and rgt < {$row['rgt']}";
    $sql2 = "update tree set lft = lft-2 where lft > {$row['rgt']}";
    $sql3 = "update tree set rgt = rgt-2 where rgt > {$row['rgt']}";
  } else {
    $sql = "update tree set status = 1 where id = {$row['id']};";
    $sql1 = "update tree set rgt = rgt-1,lft = lft -1 where status = 0 and lft > {$row['lft']} and rgt < {$row['rgt']}";
    $sql2 = "update tree set lft = lft-2 where status = 0 and lft > {$row['rgt']}";
    $sql3 = "update tree set rgt = rgt-2 where status = 0 and rgt > {$row['rgt']}";
  }
  mysql_query($sql);
  mysql_query($sql1);
  //can do or not do just right,but not do load empty 2 number in middle
  mysql_query($sql2);
  mysql_query($sql3);
}
/**
 *用于获取所有的节点
 *@param array $data = array('id'=>主键,'root'=>名称) 二选一
 */
function get_tree_all($data) {
  $id  = $data['id'] "SELECT lft, rgt FROM tree WHERE id = '{$id}';" : "SELECT lft, rgt FROM tree WHERE name = '{$root}';";
  $result = mysql_query($sql);
  $row  = mysql_fetch_assoc($result);
  $adata = array(); //所有数据
  $right = array(); //计数
  $prev  = array();
  $result = mysql_query("SELECT id,name, lft, rgt FROM tree WHERE lft BETWEEN '" . $row['lft'] . "' AND '" . $row['rgt'] ."' ORDER BY lft ASC ;");
  while ($row = mysql_fetch_assoc($result)) {
    if (count($right) > 0) {
      while ($right[count($right) - 1] < $row['rgt']) { // 检查我们是否应该将节点移出堆栈
        array_pop($right);
        array_pop($prev);
      }
    }
    $parent = $prev "SELECT lft, rgt FROM tree WHERE id = '{$id}';" : "SELECT lft, rgt FROM tree WHERE name = '{$root}';";
  $result = mysql_query($sql);
  $row  = mysql_fetch_assoc($result);
  $right = array();
  $result = mysql_query("SELECT name, lft, rgt FROM tree WHERE lft BETWEEN '" . $row['lft'] . "' AND '" . $row['rgt'] ."' ORDER BY lft ASC ;");
  while ($row = mysql_fetch_assoc($result)) {
    if (count($right) > 0) { // 检查我们是否应该将节点移出堆栈
      while ($right[count($right) - 1] < $row['rgt']) {
        array_pop($right);
      }
    }
    echo str_repeat(' ',count($right)) . $row['name'] . "\n";
    $right[] = $row['rgt'];
  }
}
mysql_connect('localhost','root','') or die('connect error');
mysql_select_db('test') or die('database error');
mysql_query('set names utf8');
display_tree(array('root'=>'Food'));
//display_tree(array('root'=>'bigboss'));
//move_tree_all($pdata=array('root'=>'Fruit'),$ndata=array('root'=>'Red'),$cdata=array('root'=>'Meat'));
//move_tree_all('','',$cdata=array('root'=>'Meat'));
//move_tree_item('','',array('root'=>'Red'));
//move_tree_item(array('root'=>'Red'),array('root'=>'Cherry'),array('root'=>'Fruit'));
//delete_tree_all(array('root'=>'Yellow'));
//delete_tree_all(array('root'=>'Meat'));
//delete_tree_item(array('root'=>'Meat'));
//insert_tree('','','bigboss');
//insert_tree(array('root'=>'Red'),'','dalao');
//insert_tree(array('root'=>'Red'),array('root'=>'Cherry'),'baddalao');
//insert_tree(array('root'=>'Fruit'),array('root'=>'Red'),'Redbother');
display_tree(array('root'=>'Food'));

更多关于PHP相关内容感兴趣的读者可查看本站专题：《php字符串(string)用法总结》、《PHP数组(Array)操作技巧大全》、《PHP基本语法入门教程》、《PHP运算与运算符用法总结》、《php面向对象程序设计入门教程》、《PHP网络编程技巧总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。

标签：
PHP,节点操作,无限分类
蝙蝠岛资源网 Design By www.hbtsch.com
广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站文章均来自网站采集或用户投稿，网站不提供任何软件下载或自行开发的软件！ 如有用户或公司发现本站内容信息存在侵权行为，请邮件告知！ 858582#qq.com
蝙蝠岛资源网 Design By www.hbtsch.com

评论“PHP带节点操作的无限分类实现方法详解”

暂无PHP带节点操作的无限分类实现方法详解的评论...
www.hbtsch.com 蝙蝠岛资源网
139,976影音资源
144,792福利资源
21,817软件资源
631,128技术资源
一句话新闻
一口气升级7个大模型SaaS应用，百度智能云：突出一个“开箱即用” - 2025/10/28

这一波大模型产业落地浪潮里，不少企业其实处在 “干瞪眼“的状态。

一种情况是，很多大模型产品看得见却摸不着，在台上一个个遥遥领先——今天Sora技精四座，明天英伟达的机器人又赢得满堂彩，可是到了台下一问：啥时候能用上啊？答曰：遥遥无期。

另一种情况是，企业想用上大模型，却又难免瞻前顾后——既要考虑场景融合，又得兼顾安全性，还要考虑打通现有系统，再加上各种部署成本和繁琐的采购流程……最后只能拂袖：罢了，再等等吧。

稳了！魔兽国服回归的3条重磅消息！官宣时间再确认！

昨天有一位朋友在大神群里分享，自己亚服账号被封号之后居然弹出了国服的封号信息对话框。

这里面让他访问的是一个国服的战网网址，com.cn和后面的zh都非常明白地表明这就是国服战网。

而他在复制这个网址并且进行登录之后，确实是网易的网址，也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情，因为以前都没有出现这样的情况，现在突然提示跳转到国服战网的网址，是不是说明了简体中文客户端已经开始进行更新了呢？

更新日志

友情链接

杰晶网络 DDR爱好者之家 桃源资源网 杰网资源 MicroAirGrinder 南强小屋 幽灵资源网 相思资源网 明霞山资源网 内蒙古资源网 黑松山资源网 大旗谷资源网 常春岛资源网 岱庙资源网 兴国资源网 HerbalExtract 蝙蝠岛资源网 白云城资源网 天枫庄资源网 无争山庄资源网 HerbalExtracts FoodColouring NaturalHerbal HerbalOnline NaturalColouring 更多链接
蝙蝠岛资源网 Design By www.hbtsch.com