PHP reads csv file class

    define("CSV_Start",    0);
    define("CSV_Quoted",   1);
    define("CSV_Quoted2",  2);
    define("CSV_Unquoted", 3);

    function readCSV($fh, $len, $delimiter = ',', $enclosure = '"') {
        $data = Array();
        $fildNr = 0;
        $state = CSV_Start;

        $data[0] = "";

        do {
            $line = fgets($fh, $len);
            for ($ix = 0; $ix < strlen($line); $ix++) {
                if ($line[$ix] == $delimiter) {
                    if ($state != CSV_Quoted) {
                        $fildNr++;
                        $data[$fildNr] = "";
                        $state = CSV_Start;
                    } else {
                        $data[$fildNr] .= $line[$ix];
                    }
                } elseif ($line[$ix] == $enclosure) {
                    if ($state == CSV_Start) {
                        $state = CSV_Quoted;
                    } elseif ($state == CSV_Quoted) {
                        $state = CSV_Quoted2;
                    } elseif ($state == CSV_Quoted2) {
                        $data[$fildNr] .= $line[$ix];
                        $state = CSV_Quoted;
                    } else {
                        $data[$fildNr] .= $line[$ix];
                    }
                } else {
                    $data[$fildNr] .= $line[$ix];
                    if ($state == CSV_Quoted2) {
                        echo "error";
                    } elseif ($state == CSV_Start) {
                        $state = CSV_Unquoted;
                    }
                }
            }
        } while ($state == CSV_Quoted);

        return $data;
    }

    ?>

php, csv