上家公司开发医院挂号系统，系统采用GBK编码。ajax发送的中文用户名让PHP保存为cookie出现乱码的解决方案。
1.Javascript变量
var user=document.getElementById('user').innerText;
user=escape(user);2.PHP保存部分
//处理ajax提交的数据
function unescape($str) {
$str = rawurldecode($str);
preg_match_all("/%u.{4}|&#x.{4};|&#d+;|.+/U",$str,$r);
$ar = $r[0];
foreach($ar as $k=>$v) {
if(substr($v,0,2) == "%u")
$ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,-4)));
elseif(substr($v,0,3) == "&#x")
$ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,3,-1)));
elseif(substr($v,0,2) == "&#") {
$ar[$k] = iconv("UCS-2","GBK",pack("n",substr($v,2,-1)));
}
}
return join("",$ar);
}
setcookie('Datatype[user]', unescape($_POST[user])); 
