本文整理匯總了PHP中PKPString::regexp_split方法的典型用法代碼示例。如果您正苦於以下問題：PHP PKPString::regexp_split方法的具體用法？PHP PKPString::regexp_split怎麽用？PHP PKPString::regexp_split使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類PKPString的用法示例。
在下文中一共展示了PKPString::regexp_split方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的PHP代碼示例。
示例1: filterKeywords
/**
* Split a string into a clean array of keywords
* @param $text string
* @param $allowWildcards boolean
* @return array of keywords
*/
static function filterKeywords($text, $allowWildcards = false)
{
$minLength = Config::getVar('search', 'min_word_length');
$stopwords = self::_loadStopwords();
// Join multiple lines into a single string
if (is_array($text)) {
$text = join("\n", $text);
}
$cleanText = Core::cleanVar($text);
// Remove punctuation
$cleanText = PKPString::regexp_replace('/[!"\\#\\$%\'\\(\\)\\.\\?@\\[\\]\\^`\\{\\}~]/', '', $cleanText);
$cleanText = PKPString::regexp_replace('/[\\+,:;&\\/<=>\\|\\\\]/', ' ', $cleanText);
$cleanText = PKPString::regexp_replace('/[\\*]/', $allowWildcards ? '%' : ' ', $cleanText);
$cleanText = PKPString::strtolower($cleanText);
// Split into words
$words = PKPString::regexp_split('/\\s+/', $cleanText);
// FIXME Do not perform further filtering for some fields, e.g., author names?
// Remove stopwords
$keywords = array();
foreach ($words as $k) {
if (!isset($stopwords[$k]) && PKPString::strlen($k) >= $minLength && !is_numeric($k)) {
$keywords[] = PKPString::substr($k, 0, SEARCH_KEYWORD_MAX_LENGTH);
}
}
return $keywords;
}