Float and NumberFormatter oddity

gistfile1.txt

        $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, NumberFormatter::TYPE_DOUBLE, $position);
        if (intl_is_failure($fmt->getErrorCode()) || $position < strlen($value)) {
            $this->error(self::NOT_FLOAT);
            return false;
        }

F
$value: string(3) "1.3"
$parsedFloat: float(13)
$position: int(3)

F
$value: string(6) "1000.3"
$parsedFloat: float(10003)
$position: int(6)

F
$value: string(7) "1,000.3"
$parsedFloat: float(1.0003)
$position: int(7)

F
$value: string(8) "1 000,3"
$parsedFloat: float(1000.3)
$position: int(7)

F
$value: string(3) "1,3"
$parsedFloat: float(13)
$position: int(3)

F
$value: string(6) "1000,3"
$parsedFloat: float(10003)
$position: int(6)

F
$value: string(7) "1.000,3"
$parsedFloat: float(1.0003)
$position: int(7)