Float and NumberFormatter oddity

gistfile1.txt

Old validators with Zend\Locale\Format, passing:

    public function deLocaleStringsProvider()
    {
        return array(
            array('1,3',     true),
            array('1000,3',  true),
            array('1.000,3', true),
            array('1.3',     false),
            array('1000.3',  false),
            array('1,000.3', false),
        );
    }
 
    public function enLocaleStringsProvider()
    {
        return array(
            array('1.3',     true),
            array('1000.3',  true),
            array('1,000.3', true),
            array('1,3',     false), // !!!
            array('1000,3',  false), // !!!
            array('1.000,3', false), // !!!
        );
    }

New tests, with NumberFormatter:

    public function deLocaleStringsProvider()
    {
        return array(
            array('1,3',     true),
            array('1000,3',  true),
            array('1.000,3', true),
            array('1.3',     true), //???
            array('1000.3',  true), //???
            array('1,000.3', true), //???
        );
    }
 
    public function enLocaleStringsProvider()
    {
        return array(
            array('1.3',     true),
            array('1000.3',  true),
            array('1,000.3', true),
            array('1,3',     true), //???
            array('1000,3',  true), //???
            array('1.000,3', true), //???
        );
    }


Using this new logic:

        $locale  = $this->locale;
        $fmt     = new NumberFormatter($locale, NumberFormatter::DECIMAL);
        if (intl_is_failure($fmt->getErrorCode())) {
            throw new Exception\InvalidArgumentException("Invalid locale string given");
        }

        $parsedFloat = $fmt->parse($value);
        if (intl_is_failure($fmt->getErrorCode())) {
            $this->error(self::NOT_FLOAT);
            return false;
        }

        $decimalSep  = $fmt->getSymbol(NumberFormatter::DECIMAL_SEPARATOR_SYMBOL);
        $groupingSep = $fmt->getSymbol(NumberFormatter::GROUPING_SEPARATOR_SYMBOL);

        $valueFiltered = str_replace($groupingSep, '', $value);
        $valueFiltered = str_replace($decimalSep, '.', $valueFiltered);

        if (strval($parsedFloat) !== $valueFiltered) {
            $this->error(self::NOT_FLOAT);
            return false;
        }