6  * The preference cookie is used to store small user preference data
10  * Data is stored as key#value#key#value string, with all keys and values being urlencoded
17     protected array $data = [];  variable in dokuwiki\\PrefCookie
20      * Initialize the class from the cookie data
24         $this->data = $this->decodeData($_COOKIE[self::COOKIENAME] ?? '');
36         return $this->data[$pref] ?? $default;
51             if (isset($this->data[$pref])) {
52                 unset($this->data[$pref]);
55             $this->data[$pref] = $value;
70         ksort($this->data); // sort by key
72         $newdata = self::encodeData($this->data);
77         // update the cookie data for the current request
93      * Decode the cookie data (if any)
95      * @return array the cookie data as associative array
99         $data = [];
100         if ($rawdata === '') return $data;
111             $data[urldecode($parts[$i])] = urldecode($parts[$i + 1]);
114         return $data;
118      * Encode the given cookie data
120      * @param array $data the cookie data as associative array
123     protected function encodeData(array $data): string  argument
127         foreach ($data as $key => $val) {