/**
* Extract keywords from text
*
* @param string|null $text
* @param bool|true $withoutStopWords
*
* @return array
*/
public function keywords($text = null, $withoutStopWords = true)
{
$config = new Config();
if ($withoutStopWords) {
$config->addListener(new Stopword());
}
$textRank = new TextRank($config);
try {
$keywords = $textRank->getKeywords($this->cleanup($text));
} catch (\RuntimeException $e) {
$keywords = null;
}
return is_array($keywords) ? array_keys($keywords) : $keywords;
}
public function extractKeywords($text = null, $limit = 15, $withoutStopWords = true)
{
if (!$text) {
return;
}
$text = strtolower($text);
$config = new Config();
if ($withoutStopWords) {
$config->addListener(new Stopword());
}
$textRank = new TextRank($config);
try {
$keywords = $textRank->getKeywords($this->_cleanupText($text));
} catch (\RuntimeException $e) {
$keywords = null;
}
if ($keywords == "") {
$keywords = str_replace(' ', ',', $text);
}
return is_array($keywords) ? implode(", ", array_slice(array_keys($keywords), 0, $limit)) : $keywords;
}