Phpml\FeatureExtraction\TokenCountVectorizer::transformSample PHP Method

    private function transformSample(string &$sample)
    {
        $counts = [];
        $tokens = $this->tokenizer->tokenize($sample);
        foreach ($tokens as $token) {
            $index = $this->getTokenIndex($token);
            if (false !== $index) {
                $this->updateFrequency($token);
                if (!isset($counts[$index])) {
                    $counts[$index] = 0;
                }
                ++$counts[$index];
            }
        }
        foreach ($this->vocabulary as $index) {
            if (!isset($counts[$index])) {
                $counts[$index] = 0;
            }
        }
        ksort($counts);
        $sample = $counts;
    }