Symfony\Component\Console\Formatter\OutputFormatter::createStyleFromString PHP Method

    private function createStyleFromString($string)
    {
        if (isset($this->styles[$string])) {
            return $this->styles[$string];
        }
        if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', $string, $matches, PREG_SET_ORDER)) {
            return false;
        }
        $style = new OutputFormatterStyle();
        foreach ($matches as $match) {
            array_shift($match);
            if ('fg' == $match[0]) {
                $style->setForeground($match[1]);
            } elseif ('bg' == $match[0]) {
                $style->setBackground($match[1]);
            } elseif ('options' === $match[0]) {
                preg_match_all('([^,;]+)', $match[1], $options);
                $options = array_shift($options);
                foreach ($options as $option) {
                    try {
                        $style->setOption($option);
                    } catch (\InvalidArgumentException $e) {
                        @trigger_error(sprintf('Unknown style options are deprecated since version 3.2 and will be removed in 4.0. Exception "%s".', $e->getMessage()), E_USER_DEPRECATED);
                        return false;
                    }
                }
            } else {
                return false;
            }
        }
        return $style;
    }