iconv(): Detected an incomplete multibyte character in input string 转换为 utf-8 有大用

Hi I have seen this question asked around the traps, but so far none of the examples I have seen have helped me, when I tried them. I am getting the error "iconv(): Detected an incomplete multibyte character in input string ", on certain input. When using the following functions together. Do you have any ideas as to how to get this error message to go away. I am attempting to convert an input string with mixed encoding to UTF8.

    function ConvertToUTF8($text){
         return iconv(mb_detect_encoding($text, mb_detect_order(), false), "UTF-8//IGNORE", $text);
    }

EDIT: Hi all after some looking around the following worked for us:

 function ConvertToUTF8($text){

    $encoding = mb_detect_encoding($text, mb_detect_order(), false);

    if($encoding == "UTF-8")
    {
        $text = mb_convert_encoding($text, 'UTF-8', 'UTF-8');    
    }


    $out = iconv(mb_detect_encoding($text, mb_detect_order(), false), "UTF-8//IGNORE", $text);


    return $out;
}

You might be able to improve it, but it fixed our error.