Piwik\Plugins\Actions\Actions\ActionSiteSearch::detectSiteSearchFromUrl PHP Method

    protected function detectSiteSearchFromUrl($website, $parsedUrl)
    {
        $doRemoveSearchParametersFromUrl = true;
        $separator = '&';
        $count = $actionName = $categoryName = false;
        $keywordParameters = isset($website['sitesearch_keyword_parameters']) ? $website['sitesearch_keyword_parameters'] : array();
        $queryString = (!empty($parsedUrl['query']) ? $parsedUrl['query'] : '') . (!empty($parsedUrl['fragment']) ? $separator . $parsedUrl['fragment'] : '');
        $parametersRaw = UrlHelper::getArrayFromQueryString($queryString);
        // strtolower the parameter names for smooth site search detection
        $parameters = array();
        foreach ($parametersRaw as $k => $v) {
            $parameters[Common::mb_strtolower($k)] = $v;
        }
        // decode values if they were sent from a client using another charset
        $pageEncoding = $this->request->getParam('cs');
        PageUrl::reencodeParameters($parameters, $pageEncoding);
        // Detect Site Search keyword
        foreach ($keywordParameters as $keywordParameterRaw) {
            $keywordParameter = Common::mb_strtolower($keywordParameterRaw);
            if (!empty($parameters[$keywordParameter])) {
                $actionName = $parameters[$keywordParameter];
                break;
            }
        }
        if (empty($actionName)) {
            return false;
        }
        $categoryParameters = isset($website['sitesearch_category_parameters']) ? $website['sitesearch_category_parameters'] : array();
        foreach ($categoryParameters as $categoryParameterRaw) {
            $categoryParameter = Common::mb_strtolower($categoryParameterRaw);
            if (!empty($parameters[$categoryParameter])) {
                $categoryName = $parameters[$categoryParameter];
                break;
            }
        }
        if (isset($parameters['search_count']) && $this->isValidSearchCount($parameters['search_count'])) {
            $count = $parameters['search_count'];
        }
        // Remove search kwd from URL
        if ($doRemoveSearchParametersFromUrl) {
            // @see excludeQueryParametersFromUrl()
            // Excluded the detected parameters from the URL
            $parametersToExclude = array($categoryParameterRaw, $keywordParameterRaw);
            if (isset($parsedUrl['query'])) {
                $parsedUrl['query'] = UrlHelper::getQueryStringWithExcludedParameters(UrlHelper::getArrayFromQueryString($parsedUrl['query']), $parametersToExclude);
            }
            if (isset($parsedUrl['fragment'])) {
                $parsedUrl['fragment'] = UrlHelper::getQueryStringWithExcludedParameters(UrlHelper::getArrayFromQueryString($parsedUrl['fragment']), $parametersToExclude);
            }
        }
        $url = UrlHelper::getParseUrlReverse($parsedUrl);
        if (is_array($actionName)) {
            $actionName = reset($actionName);
        }
        $actionName = PageUrl::urldecodeValidUtf8($actionName);
        $actionName = trim($actionName);
        if (empty($actionName)) {
            return false;
        }
        if (is_array($categoryName)) {
            $categoryName = reset($categoryName);
        }
        $categoryName = PageUrl::urldecodeValidUtf8($categoryName);
        $categoryName = trim($categoryName);
        return array($url, $actionName, $categoryName, $count);
    }