6  * Extract search Engine Inormation from the HTTP referer
12     /** @var array Search engine definitions with regex patterns and metadata */
106     /** @var string|null The search engine key */
107     protected ?string $engine = null;  variable in dokuwiki\\plugin\\statistics\\SearchEngines
109     /** @var string|null The search engine name */
126      * Check if the referer is from a search engine
128      * @return bool True if the referer is from a search engine
132         return (bool)$this->engine;
136      * Get the search engine identifier from the referer
138      * @return string|null The search engine or null if not a search engine
142         return $this->engine;
148      * @return string|null The search query or null if not a search engine
156      * Get the search engine name for the given engine identifier
158 … * @return string If we have a name for the engine, return it, otherwise return capitalized $engine
160     public static function getName($engine): string  argument
162 …return isset(self::$searchEngines[$engine]) ? self::$searchEngines[$engine]['name'] : ucwords($eng…
166      * Get the search engine URL for the given engine identifier
168      * @return string|null The search engine URL or null if not defined
170     public static function getUrl($engine): ?string  argument
172         return isset(self::$searchEngines[$engine]) ? self::$searchEngines[$engine]['url'] : null;
183             $this->engine = $result['engine'];
190      * Analyze a referer URL to extract search engine information and query
193      * @return array|null Array with 'engine', 'name', 'query' keys or null if not a search engine
226         foreach (self::$searchEngines as $key => $engine) {
227             if (preg_match('/' . $engine['regex'] . '/', $domain)) {
228                 $query = $this->extractQuery($params, $engine['params']);
230                     'engine' => $key,
231                     'name' => $engine['name'],
256         // Generate engine name from domain
262             'engine' => $engineName,