php ajax交互汉字乱码的问题解决方法
ajax只支持utf-8格式，不能支持gb2312编码格式，所以经常遇到gb2312的编码的程序使用ajax就出现乱码，刚找到一种解决方案是
服务器端传送的数据仍是gb2312编码，客户端用js将汉字转变成utf8编码显示在页面
方法一json
一，服务器端json数据用php教程的iconv函数转换：iconv('gb2312', 'utf8', "被转换字符串，输出到浏览器");
客户端获取utf8数据，再转成gb2312：
function gb2utf8(data){//gb编码是，ie通过二进制码utf8->gbk转为中文
var glbencode = [];
gb2utf8_data = data;
execscript("gb2utf8_data = midb(gb2utf8_data, 1)", "vbscript");
var t=escape(gb2utf8_data).replace(/%u/g,"").replace(/(.{2})(.{2})/g|>,"%$2%$1").replace(/%([a-z].)%(.{2})/g|>,"@$1$2");
t=t.split("@");
var i=0,j=t.length,k;
while(++i<j)>
k=t.substring(0,4);
if(!glbencode[k]) {
gb2utf8_char = eval("0x"+k);
execscript("gb2utf8_char = chr(gb2utf8_char)", "vbscript");
glbencode[k]=escape(gb2utf8_char).substring(1,6);
}
t=glbencode[k]+t.substring(4);
}
gb2utf8_data = gb2utf8_char = null;
return unescape(t.join("%"));
}二，header("content-type", "application/x-www-form-urlencoded; charset=gbk"); //输出头标，设置为gbk编码
三，在ajax请求数据前调用上面的方法指定请求使用的字符集:xmlhttp.setrequestheader( "content-type", "application/x-www-form-urlencoded;charset=gbk");
方案二
search.php
<?php
header("content-type: text/html; charset=gb2312");
include './search.htm';
search.htm
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>高级搜索</title>
</head>
<body>
<h3>高级搜索</h3>
<form method="post" action="">
学校类型:
<select name="schooltype">
<option value="">全部</option>
<option value="1">小学</option>
<option value="2">初中</option>
</select>
学校名称:
<select name="sid" id="sid">
<option value="">请选择学校</option>
</select>
</form>
<script type="text/网页特效">
function ajax(settings) {
var xhr = window.activexobject ? new activexobject("microsoft.xmlhttp") : new xmlhttprequest(), successed = false;
xhr.open(settings.type, settings.url);
if(settings.type == 'post')
xhr.setrequestheader('content-type', 'application/x-www-form-urlencoded');
xhr.send((!settings.cache ? 'time=' + new date().gettime() + '&' : '') + settings.data);
settings.loader();
settimeout(function() {
if(!successed) {
alert('resquest timeout!');
xhr.abort();
}
}, settings.timeout);
xhr.onreadystatechange = function() {
if (xhr.readystate == 4 && xhr.status == 200) {
settings.callback(xhr.responsetext.replace(/(^s*)|(s*$)/g, ""));
}
successed = true;
}
}
function a(t) {
ajax({
type: 'post',
url: 'ajax.php',
data: 'schooltype=' + t,
timeout: 8000,
cache: true,
loader: function() {},
callback: function(d) {
var arr = eval(d);
if(typeof(arr) == 'object') {
var obj, option;
document.getelementbyid('sid').innerhtml = '';
for(var i = 0; obj = arr; i ++) {
option = document.createelement('option');
option.value = obj[0];
option.innerhtml = txt2utf8(obj[1], '&#');
document.getelementbyid('sid').appendchild(option);
}
}
}
})
}
function txt2utf8(string, prefix){
for(var i=0,utf8=[];i<string.length;utf8.push((prefix||'u')+string.charcodeat(i++)));
return utf8.join('');
}
a(0);
</script>
</body>
</html>
ajax.php
<?php
header("content-type: text/html; charset=gb2312");
$schooltype = !empty($_post['schooltype']) ? $_post['schooltype'] : 0;
switch($schooltype) {
case 0:
echo "[['40', '太平溪镇花栗包完全小学'],['41', '太平溪镇长岭黑龙江希望小学'],['42', '乐天溪镇初级中学'],['43', '乐天溪镇莲沱初级中学']]";
break;
case 1:
echo "[['40', '太平溪镇花栗包完全小学'],['41', '太平溪镇长岭黑龙江希望小学']]";
break;
case 2:
echo "[['42', '乐天溪镇初级中学'],['43', '乐天溪镇莲沱初级中学']]";
break;
default:
break;
}
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