$ .ajax编码问题

I have the page (encoding 'windows-1251') .php with $.ajax sender:

    <div style='float:left;' id='commentRegistration'>                                  
     <input id='addNewCommentUserName' name="name" type="text" size="20" maxlength="30" style="border:1px solid #AAA; width:208px;" value="<?  echo "$_SESSION[login]"; ?>" />
     <textarea id='addNewCommentText' name="text" style="width: 406px; height: 50px; resize: vertical; border:1px solid #AAA;"></textarea>
     <input id='addNewCommentId' name="id" type="hidden" value="<? echo"$myrow[id]"; ?>">     
     <input id='addNewCommentCodeGen' type='text' name='code' maxlength='6' style='border:1px solid #AAA; width:47px;'>   
     <input id='addNewCommentBtn' class='button' style='width:208px; padding-top:5px; padding-bottom:5px;' type='submit' name='submit' value='Добавить комментарий'>   
        <script>
            $(document).ready(function(){               
                var name = document.getElementById('addNewCommentUserName');
                var text = document.getElementById('addNewCommentText');
                var id = document.getElementById('addNewCommentId');
                var code = document.getElementById('addNewCommentCodeGen');         
                $('#addNewCommentBtn').bind('click',function(){
                    $.ajax({                    
                        type: "POST",
                        url: "comment.php",                 
                        data: { 'name':name.value, 'text':text.value, 'id':id.value, 'code':code.value }            
                    }).done(function( msg ) {

                    });                 
                });
            });
        </script>

comment.php:

<?  include ("blocks/bd.php"); 
    session_start();    
        header("Content-type: text/html; charset=UTF-8");
    if (isset($_POST['name'])) { $name = $_POST['name'];  if ($name == '') { unset($name);} } 
    if (isset($_POST['text'])) { $text = $_POST['text'];  if ($text == '') { unset($text);} }          
    if (isset($_POST['code'])) { $code = $_POST['code'];  if ($code == '') { unset($code);} } 
    if (isset($_POST['id'])) { $id = $_POST['id'];  if ($id == '') { unset($id);} } 
    if (empty($name) or empty($text) or empty($code) or empty($id)) 
    {
        exit ("ErrorEmptyInfo");
    }

    $name = stripslashes($name);
    $name = htmlspecialchars($name);
    $text = stripslashes($text);
    $text = htmlspecialchars($text);    
    $name = trim($name);
    $text = trim($text);

    $mail = "test@mail.ru";
    $subject = "text text text";
    $message = "text text text";
    if (mail($mail, $subject, $message, "Content-type:text/plain; Charset=windows-1251
" ))
    {
        $dateNow = date("Y-m-d");
            iconv("UTF-8", "windows-1251", $text);
            iconv("UTF-8", "windows-1251", $name);
        $addComment = mysql_query("INSERT INTO comments (post,author,text,date) VALUES ('$id','$name','$text','$dateNow')",$db);    
        echo "SUCCESS";
    }
?>

In database $text and $name writes not correctly (encoding problems). I understand that $.ajax send UTF-8 encoding. To change encoding to windows-1251 I use iconv("UTF-8", "windows-1251", $text); not working. How I force to write into my_sql database string with windows-1251 correctly????

This might help:

$.ajax({                    
    type: "POST",
    contentType: "application/json; charset=windows-1251",
    ....

Also to force MySQL to use windows-1251 encoding, add this line Once after you connect to your database:

mysql_query('SET NAMES "cp1251"');

Update:

You can use the follow instead of iconv, that might work:

$text = mb_convert_encoding($text, 'Windows-1251');

Or:

$text = mb_convert_encoding($text, 'Windows-1251', 'UTF-8');

2nd Update

You might need to comment out these lines. Because your php internal encoding is not windows-1251, when you operating some stuff on your strings that might make some problems:

/* Temporary commented out, to see if it has any effects
$name = stripslashes($name);
$name = htmlspecialchars($name);
$text = stripslashes($text);
$text = htmlspecialchars($text);    
$name = trim($name);
$text = trim($text);
*/