csv to array

function csv2array($file) {
    $file = file('fragebogenDaten.csv');
    $data = array();
    foreach ($file as $lineNumber => $line) {
        if($lineNumber == 0) {
            $keys  = explode(';', $line);
            foreach($keys as $k=>$v)
                $keys[$k] = trim($v);
        }
        else {
            $values = explode(';', $line, sizeof($keys));
            $data[$lineNumber-1] = array_combine($keys, $values);
        }
    }
    return $data;
}