Problem with: Fatal error: [] operator not supported for strings in

I'm getting information from database, saving it in array and echoing it in a form with loop structure and I'm having problems when I try to save the modified information to database.

I'm getting this error:

Fatal error: [] operator not supported for strings in....

Code:

    $namesql1 = "SELECT name,date,text,date2 FROM table WHERE something= '$something'";
    $nameresult1 = mysql_query($namesql1);
    $countrows = mysql_num_rows($nameresult1);
    while ($row = mysql_fetch_array($nameresult1, MYSQL_ASSOC)) {
        $name[] = $row['name'];
        $date[] = $row['date'];
        $text[] = $row['text'];
        $date2[] = $row['date2 '];
    }

/** SOME CODE HERE **/

    $wrotesql = "UPDATE service_report SET  name ='$name' , $date = '$date',$text = '$text[$nro]', ser_date = '$date2[$nro]' WHERE something = '$something')";

    $wroteresult = mysql_query($wrotesql);

Could somebody please give me a hint what I'm doing wrong?

Thank you.