public static function matchKeyword(&$wordarray, &$content, $start, $content_len)
{
if ($start >= $content_len) {
return 0;
}
if (!array_key_exists($content[$start], $wordarray)) {
return 0;
}
$X =& $wordarray[$content[$start]];
if ($X == 1) {
return 1;
} else {
$n = KeywordFilter::matchKeyword($X, $content, $start + 1, $content_len);
if ($n == 0) {
return 0;
} else {
return $n + 1;
}
}
}
private static function getPhraseScores($phrases, $wordScores)
{
$phrase_scores = array();
foreach ($phrases as $phrase) {
if (!array_key_exists($phrase, $phrase_scores)) {
$phrase_scores[$phrase] = 0;
}
$wordList = KeywordFilter::splitPhraseIntoWords($phrase);
$total_score = 0;
foreach ($wordList as $word) {
if (isset($wordScores[$word])) {
$total_score += $wordScores[$word];
}
}
$phrase_scores[$phrase] = $total_score;
}
arsort($phrase_scores);
return $phrase_scores;
}
