/** * Parses search keywords. * * @param string $keywordString */ protected function parseKeywords($keywordString) { // convert encoding if necessary if (!StringUtil::isUTF8($keywordString)) { $keywordString = StringUtil::convertEncoding('ISO-8859-1', 'UTF-8', $keywordString); } // remove bad wildcards $keywordString = preg_replace('/(?<!\\w)\\*/', '', $keywordString); // remove search operators $keywordString = preg_replace('/[\\+\\-><()~]+/', '', $keywordString); if (mb_substr($keywordString, 0, 1) == '"' && mb_substr($keywordString, -1) == '"') { // phrases search $keywordString = StringUtil::trim(mb_substr($keywordString, 1, -1)); if (!empty($keywordString)) { $this->keywords = array_merge($this->keywords, array(StringUtil::encodeHTML($keywordString))); } } else { // replace word delimiters by space $keywordString = str_replace(array('.', ','), ' ', $keywordString); $keywords = ArrayUtil::encodeHTML(ArrayUtil::trim(explode(' ', $keywordString))); if (!empty($keywords)) { $this->keywords = array_merge($this->keywords, $keywords); } } }