Camspiers\StatisticalClassifier\Normalizer\Token\PhpStemmer::__construct PHP 메소드

    public function __construct($lang, $charset = 'utf-8')
    {
        $lang = strtolower($lang);
        if (!in_array($lang, $this->availableLanguages)) {
            throw new \InvalidArgumentException("Invalid language {$lang}");
        }
        $this->charset = strtoupper(str_replace('-', '_', $charset));
        $this->lang = $lang;
    }