Neos\Flow\I18n\Parser\NumberParser::doParsingInStrictMode PHP Method

    protected function doParsingInStrictMode($numberToParse, array $parsedFormat, array $localizedSymbols)
    {
        $numberIsNegative = false;
        if (!empty($parsedFormat['negativePrefix']) && !empty($parsedFormat['negativeSuffix'])) {
            if (Utility::stringBeginsWith($numberToParse, $parsedFormat['negativePrefix']) && Utility::stringEndsWith($numberToParse, $parsedFormat['negativeSuffix'])) {
                $numberToParse = substr($numberToParse, strlen($parsedFormat['negativePrefix']), -strlen($parsedFormat['negativeSuffix']));
                $numberIsNegative = true;
            }
        } elseif (!empty($parsedFormat['negativePrefix']) && Utility::stringBeginsWith($numberToParse, $parsedFormat['negativePrefix'])) {
            $numberToParse = substr($numberToParse, strlen($parsedFormat['negativePrefix']));
            $numberIsNegative = true;
        } elseif (!empty($parsedFormat['negativeSuffix']) && Utility::stringEndsWith($numberToParse, $parsedFormat['negativeSuffix'])) {
            $numberToParse = substr($numberToParse, 0, -strlen($parsedFormat['negativeSuffix']));
            $numberIsNegative = true;
        }
        if (!$numberIsNegative) {
            if (!empty($parsedFormat['positivePrefix']) && !empty($parsedFormat['positiveSuffix'])) {
                if (Utility::stringBeginsWith($numberToParse, $parsedFormat['positivePrefix']) && Utility::stringEndsWith($numberToParse, $parsedFormat['positiveSuffix'])) {
                    $numberToParse = substr($numberToParse, strlen($parsedFormat['positivePrefix']), -strlen($parsedFormat['positiveSuffix']));
                } else {
                    return false;
                }
            } elseif (!empty($parsedFormat['positivePrefix'])) {
                if (Utility::stringBeginsWith($numberToParse, $parsedFormat['positivePrefix'])) {
                    $numberToParse = substr($numberToParse, strlen($parsedFormat['positivePrefix']));
                } else {
                    return false;
                }
            } elseif (!empty($parsedFormat['positiveSuffix'])) {
                if (Utility::stringEndsWith($numberToParse, $parsedFormat['positiveSuffix'])) {
                    $numberToParse = substr($numberToParse, 0, -strlen($parsedFormat['positiveSuffix']));
                } else {
                    return false;
                }
            }
        }
        $positionOfDecimalSeparator = strpos($numberToParse, $localizedSymbols['decimal']);
        if ($positionOfDecimalSeparator === false) {
            $numberToParse = str_replace($localizedSymbols['group'], '', $numberToParse);
            if (strlen($numberToParse) < $parsedFormat['minIntegerDigits']) {
                return false;
            } elseif (preg_match(self::PATTERN_MATCH_DIGITS, $numberToParse, $matches) !== 1) {
                return false;
            }
            $integerPart = $numberToParse;
            $decimalPart = false;
        } else {
            if ($positionOfDecimalSeparator === 0 && $positionOfDecimalSeparator === strlen($numberToParse) - 1) {
                return false;
            }
            $numberToParse = str_replace([$localizedSymbols['group'], $localizedSymbols['decimal']], ['', '.'], $numberToParse);
            $positionOfDecimalSeparator = strpos($numberToParse, '.');
            $integerPart = substr($numberToParse, 0, $positionOfDecimalSeparator);
            $decimalPart = substr($numberToParse, $positionOfDecimalSeparator + 1);
        }
        if (strlen($integerPart) < $parsedFormat['minIntegerDigits']) {
            return false;
        } elseif (preg_match(self::PATTERN_MATCH_DIGITS, $integerPart, $matches) !== 1) {
            return false;
        }
        $parsedNumber = (int) $integerPart;
        if ($decimalPart !== false) {
            $countOfDecimalDigits = strlen($decimalPart);
            if ($countOfDecimalDigits < $parsedFormat['minDecimalDigits'] || $countOfDecimalDigits > $parsedFormat['maxDecimalDigits']) {
                return false;
            } elseif (preg_match(self::PATTERN_MATCH_DIGITS, $decimalPart, $matches) !== 1) {
                return false;
            }
            $parsedNumber = (double) ($integerPart . '.' . $decimalPart);
        }
        $parsedNumber /= $parsedFormat['multiplier'];
        if ($parsedFormat['rounding'] !== 0.0 && $parsedNumber - (int) ($parsedNumber / $parsedFormat['rounding']) * $parsedFormat['rounding'] !== 0.0) {
            return false;
        }
        if ($numberIsNegative) {
            $parsedNumber = 0 - $parsedNumber;
        }
        return $parsedNumber;
    }