src/Data.php
public function errDeterm($arr)
    {
        $ans = false;
        $enough = is_array($arr);
        if ($enough) {
            $desc = array();
            if (!is_array($arr[0])) {
                $arr = array($arr);
            }

            foreach ($arr as $el) {
                if (!$el[0]) {
                    $desc[] = $el[1];
                }
            }

            $ans = implode(",", $desc);
        }
        return $ans;
    }
public function errDeterm($arr)
    {
        $ans = false;
        $enough = is_array($arr);
        if ($enough) {
            $desc = array();
            if (!is_array($arr[0])) {
                $arr = array($arr);
            }

            foreach ($arr as $el) {
                if (!$el[0]) {
                    $desc[] = $el[1];
                }
            }

            $ans = implode(",", $desc);
        }
        return $ans;
    }
determine error
@param $arr array of array(condition,errorDescription)
@return bool|string