PHP+AJAX中文乱码问题解决方法

在php从ajax的来的数据进行转化函数

function utf8rawurldecode ($source) {
    $decodedstr = "";
    $pos = 0;
    $len = strlen ($source);
     while ($pos < $len) {
        $charat = substr ($source, $pos, 1);
         if ($charat == '%') {
            $pos++;
            $charat = substr ($source, $pos, 1);
             if ($charat == 'u') {
                // we got a unicode character
                $pos++;
                $unicodehexval = substr ($source, $pos, 4);
                $unicode = hexdec ($unicodehexval);
                $entity = "&#". $unicode . ';';
                $decodedstr .= utf8_encode ($entity);
                $pos += 4;
             }
             else {
                // we have an escaped ascii character
                $hexval = substr ($source, $pos, 2);
                $decodedstr .= chr (hexdec ($hexval));
                $pos += 2;
             }
         } else {
            $decodedstr .= $charat;
            $pos++;
         }
     }
     return $decodedstr;
}

运用以下函数

$formname=utf8rawurldecode($formname);

iconv("utf-8","gb2312",$formname);

因为ajax通过escape转换数据加密了数据

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查资料显示可以用

$formname=mb_convert_encoding($formname,"gb2312","utf-8");