XML
XML：页面之间传递数据，跨平台传递
HTML：超文本标记语言,核心标签
XML特点：
1.标签名可以自己定义
2.有且只有一个根
3.大小写敏感
4.标签必须完整
<!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" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="../jquery-1.11.2.min.js"></script>
</head>
<body>
<select id="sel">
</select>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
$.ajax({
url:"ChuLi.php",
dataType:"JSON",
success: function(data){
//alert(data);
var str = "";
for(var k in data)
{
str+="<option value='"+data[k][0]+"'>"+data[k][1]+"</option>";
}
$("#sel").html(str);
}
});
});
</script>
</html>
<!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" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="../jquery-1.11.2.min.js"></script>
</head>
<body>
<select id="sel"></select>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
$.ajax({
url:"chulixml.php",
dataType:"XML",
success:function(data){
var ch = $(data).find("nation").children();
var str = "";
for(var i=0;i<ch.length;i++)
{
var code = $(ch[i]).find("code").text();
var name = $(ch[i]).find("name").text();
str+="<option value='"+code+"'>"+name+"</option>";
}
$("#sel").html(str);
}
});
});
</script>
</html>
<?php
include("../DBDA.php");
$db = new DBDA();
$sql = "select * from Nation";
$attr = $db->Query($sql);
echo "<nation>";
foreach($attr as $k=>$v)
{
echo "<shuju{$k}>";
echo "<code>{$v[0]}</code>";
echo "<name>{$v[1]}</name>";
echo "</shuju{$k}>";
}
echo "</nation>";
<?php
include("../DBDA.php");
$db = new DBDA();
$sql = "select * from Nation";
$attr = $db->Query($sql);
echo json_encode($attr);
?>