很简单的

1.先把

加到 header.html 页

2.把 regionss() 函数 加到 /include/tag.php 里

3.在你网站的根目录建立个  regions.php 文件

4.在你的模板的适当的地方加入   {$regionss(中华人民共和国)}   即可

注意：  表单的名字可根据你的需要可以自己修改...

测试页代码：

php ajax动态生成下拉菜单{$regionss(中华人民共和国)}

regionss 函数代码：

//省市地3级联动下拉菜单函数 regionss 省.市.地

function regionss($country="中华人民共和国")

{

global $db; $i = 1;

$text="省/市/自治区\n";

$result = $db->query("SELECT province FROM ".TABLE_PROVINCE." WHERE country='$country' ORDER BY provinceid");

while($r = $db->fetch_array($result))

{

$text .= "".$r['province']." ";

$i ;

}

$text.="";

$text.=" 市/县/区\n";

$text.="县级市/县\n";

return $text;

}

regions.js 的代码：

//var ab = new Array();

var xmlHttp;

var xmlHttpa;

function createXMLHttpRequest() {

if (window.ActiveXObject) {

xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");

}

else if (window.XMLHttpRequest) {

xmlHttp = new XMLHttpRequest();

}

}

function createXMLHttpRequesta() {

if (window.ActiveXObject) {

xmlHttpa = new ActiveXObject("Microsoft.XMLHTTP");

}

else if (window.XMLHttpRequest) {

xmlHttpa = new XMLHttpRequest();

}

}

function startRequest() {

createXMLHttpRequest();

createXMLHttpRequesta();

xmlHttp.onreadystatechange = handleStateChange;

xmlHttpa.onreadystatechange = handleStateChangearea;

document.getElementById('select2').options.length = 0;

document.getElementById('select3').options.length = 0;

var url = document.form1.select1.value;

var qurl = "/regions.php?province=" url "&time=" new Date().getTime();

xmlHttp.open("GET", qurl, true);

xmlHttp.send(null);

//setTimeout("startRequest()",2000);

}

function handleStateChange() {

if(xmlHttp.readyState == 4) {

if(xmlHttp.status == 200) {

var obj = document.getElementById('select2'); //将服务器返回的字符串写到页面中ID为select2的区域

obja = document.getElementById('select3'); //将服务器返回的字符串写到页面中ID为select3的区域

eval(xmlHttp.responseText);

}

}

}

function handleStateChangearea() {

eval(xmlHttpa.responseText);

}

//var ab = new Array();

function startRequesta() {

createXMLHttpRequesta();

xmlHttpa.onreadystatechange = handleStateChangea;

document.getElementById('select3').options.length = 0;

var url = document.form1.select2.value;

var qurl = "/regions.php?city=" url "&time=" new Date().getTime();

xmlHttpa.open("GET", qurl, true);

xmlHttpa.send(null);

//setTimeout("startRequest()",2000);

}

function handleStateChangea() {

if(xmlHttpa.readyState == 4) {

if(xmlHttpa.status == 200) {

var obja = document.getElementById('select3');

eval(xmlHttpa.responseText);

//将服务器返回的字符串写到页面中ID为select3的区域

}

}

}

数据岛 regions.php 页面代码

require "common.php";

$city = $city ? $city : "";

$area = $area ? $area : "";

if($province && $city==''){

global $db; $i = 1;

$result = $db->query("SELECT DISTINCT city FROM ".TABLE_CITY." WHERE province='$province' ORDER BY cityid");

while($r = $db->fetch_array($result))

{

$r[city]=iconv('gb2312','UTF-8',$r[city]);

echo "obj.options[obj.options.length] = new Option('".$r[city]."','".$r[city]."');\n";

$i ;

}

$resultarea = $db->query("SELECT DISTINCT city FROM ".TABLE_CITY." WHERE province='$province' ORDER BY cityid");

$r = $db->fetch_array($resultarea);

$city = $r[city];

$resulta = $db->query("SELECT DISTINCT area FROM ".TABLE_CITY." WHERE city='$city' ORDER BY cityid");

while($ra = $db->fetch_array($resulta))

{

$ra[area]=iconv('gb2312','UTF-8',$ra[area]);

echo "obja.options[obja.options.length] = new Option('".$ra[area]."','".$ra[area]."');\n";

$i ;

}

}

if($city && $province==''){

global $db; $i = 1;

$result = $db->query("SELECT DISTINCT area FROM ".TABLE_CITY." WHERE city='$city' ORDER BY cityid");

while($r = $db->fetch_array($result))

{

$r[area]=iconv('gb2312','UTF-8',$r[area]);

echo "obja.options[obja.options.length] = new Option('".$r[area]."','".$r[area]."');\n";

$i ;

}

}

?>

地址信息数据库：

采用的是phpcms3.0里自带的数据库，我没有进行任何改动

本程序可以在phpcms3.0里直接使用，若在其他地方使用请自己修改