php联动下拉菜单无刷新数据库本人自己修改的，经测试可用

网上没有一个可以拿来直接用的.最终老子还是动怒了.经过不屑的努力..老子终于把一个玩意给修改成功了..心脏病都快犯了.看来还要多研究JS..

源码是从csdn转来的，忘了是谁发的了~在此感谢。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" c />
<title>无标题文档</title>
</head>
<body>
<?php
  $host   =   "localhost";
  $db_name   =   "test";
  $username   =   "root";
  $password   =   "";
  $c($host,$username,$password) or die("不能链接到数据库!");
  $db=mysql_select_db($db_name,$conn);
  //处是连接数据库的代码

  $query1=mysql_query("select   *   from   news_bclass   where   id_2   =   '0'   order   by   id   asc");
  $fMenu="";
  $fValue="";
  while($data1=mysql_fetch_array($query1)){
  $fMenu.="\"".$data1[bname]."\",";
  $fValue.="\"".$data1[id]."\",";

  }
  $fMenu=substr($fMenu,0,(strlen($fMenu)-1));
  $fMenu="[".$fMenu."]";//*****************************得到var   fMenu
  $fValue=substr($fValue,0,(strlen($fValue)-1));
  $fValue="[".$fValue."]";//*****************************得到var   fValue

  //得到*****************************var   sMenu
  $query1=mysql_query("select * from news_bclass where id_2 = '0' order by id asc");
  while($data1=mysql_fetch_array($query1)){
  $province_id1=$data1[id];

  $query2=mysql_query("select * from news_sclass where parentid='$province_id1' order by parentid desc");

  while($data2=mysql_fetch_array($query2)){
  $num=mysql_num_rows($query2);
  $i++;
  $sMenu.="\"".$data2[sname]."\",";
  if($i==$num){
  $sMenu="[".$sMenu."],[";
  $i=0;
  }
  }
  }
  $sMenu.="]";
  $sMenu=str_replace("\",]","\"]",$sMenu);
  $sMenu=str_replace(",[]","]",$sMenu);
  if((substr($sMenu,0,2))=="[\""){
  $sMenu="[".$sMenu;
  }else{
  $sMenu=preg_replace("/\[{3,}/is","[[\\1",$sMenu);//匹配
  }

  //得到*****************************var   sValue
  $query1=mysql_query("select * from news_bclass where id_2  = '0' order by id asc");
  while($data1=mysql_fetch_array($query1)){
  $province_id=$data1[id];
  $sql="select * from news_sclass where  parentid='$province_id' order by  parentid asc";
// echo $sql;
  $query2=mysql_query($sql);
  while($data2=mysql_fetch_array($query2)){
  $nums=mysql_num_rows($query2);
  $j++;
  $sValue.="\"".$data2[id]."\",";
  if($j==$nums){
  $sValue="[".$sValue."],[";
  $j=0;
  }
  }
  }
  $sValue.="]";
  $sValue=str_replace("\",]","\"]",$sValue);
  $sValue=str_replace(",[]","]",$sValue);
  if((substr($sValue,0,2))=="[\""){
  $sValue="[".$sValue;
  }else{
  $sValue=preg_replace("/\[{3,}/is","[[\\1",$sValue);//匹配
  }

  ?>
  <div   id="tar"></div>
  <SCRIPT   LANGUAGE="JavaScript"   DEFER>
  var   fMenu   =   <?php   echo   $fMenu;   ?>;
  var   fValue   =   <?php   echo   $fValue;   ?>;
  var   sMenu   =   <?php   echo   $sMenu;   ?>;
  var   sValue   =   <?php   echo   $sValue;   ?>;

  var   oWhere   =   document.all.tar;
  var   ofMenu   =   document.createElement("<SELECT   name='bigclass'>");
  var   osMenu   =   document.createElement("<SELECT   name='smallclass'>");
  with(oWhere)appendChild(ofMenu),appendChild(osMenu);

  createMainOptions();
  createSubOptions(0);

  ofMenu.onchange   =   function()   {createSubOptions(this.selectedIndex);};
  function   createMainOptions()   {
  for(var   i=0;i<fMenu.length;i++)ofMenu.options[i]   =   new   Option(fMenu[i],fValue[i]);
  }

  function   createSubOptions(j)   {
  with(osMenu)   {
  length=0;
  for(var   i=0;i<sMenu[j].length;i++)osMenu.options[i]   =   new   Option(sMenu[j][i],sValue[j][i]);
  }
  }
</SCRIPT>

<script language="javascript" defer="defer">

</script>
</body>
</html>

数据库表结构:
-- phpMyAdmin SQL Dump
-- version 2.9.2
-- http://www.phpmyadmin.net
--
-- 主机: localhost
-- 生成日期: 2007 年 10 月 14 日 03:31
-- 服务器版本: 5.0.27
-- PHP 版本: 5.2.1
--
-- 数据库: `test`
--
-- --------------------------------------------------------
--
-- 表的结构 `news_bclass`
--
CREATE TABLE `news_bclass` (
  `id` int(11) NOT NULL auto_increment,
  `bname` varchar(10) NOT NULL default '',
  `id_2` varchar(12) NOT NULL,
  KEY `id` (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=6 ;
--
-- 导出表中的数据 `news_bclass`
--
INSERT INTO `news_bclass` VALUES (1, '123', '0');
INSERT INTO `news_bclass` VALUES (2, '3123', '1');
INSERT INTO `news_bclass` VALUES (3, '321231', '1');
INSERT INTO `news_bclass` VALUES (4, '4444', '0');
INSERT INTO `news_bclass` VALUES (5, '23123', '0');
-- --------------------------------------------------------
--
-- 表的结构 `news_sclass`
--
CREATE TABLE `news_sclass` (
  `id` int(11) NOT NULL auto_increment,
  `sname` varchar(10) NOT NULL default '',
  `parentid` int(10) NOT NULL default '0',
  `bname` varchar(10) NOT NULL default '',
  UNIQUE KEY `id` (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=8 ;
--
-- 导出表中的数据 `news_sclass`
--
INSERT INTO `news_sclass` VALUES (1, '123', 0, '123');
INSERT INTO `news_sclass` VALUES (2, '12312', 1, '123');
INSERT INTO `news_sclass` VALUES (3, '32123', 1, '231');
INSERT INTO `news_sclass` VALUES (4, '12312', 1, '123');
INSERT INTO `news_sclass` VALUES (5, '32123', 1, '231');
INSERT INTO `news_sclass` VALUES (6, '4444', 4, '4444');
INSERT INTO `news_sclass` VALUES (7, '4444', 4, '4444');

posted on 2007-10-14 11:37 Arcangel 阅读(6180) 评论(4) 编辑收藏举报

php联动下拉菜单 无刷新 数据库 本人自己修改的，经测试可用

php联动下拉菜单无刷新数据库本人自己修改的，经测试可用