php ajax交互汉字乱码的问题解决方法_php教程

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/">

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");

$schooltype = !emptyempty($_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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php ajax交互汉字乱码的问题解决方法