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");