302     private static $extensions = [];  variable in phpseclib3\\File\\X509
583         foreach (self::$extensions as $extension) {
621         $extensions = &$this->subArrayUnchecked($root, $path);
623         if ($extensions) {
624             for ($i = 0; $i < count($extensions); $i++) {
625                 $id = $extensions[$i]['extnId'];
626                 $value = &$extensions[$i]['extnValue'];
670         $extensions = &$this->subArray($root, $path, !empty($this->extensionValues));
680                 foreach ($extensions as $key => $value) {
682                         $extensions[$key] = $newext;
687             $extensions[] = $newext;
690         if (is_array($extensions)) {
691             $size = count($extensions);
693                 if ($extensions[$i] instanceof Element) {
697                 $id = $extensions[$i]['extnId'];
698                 $value = &$extensions[$i]['extnValue'];
733                         unset($extensions[$i]);
897         if (isset(self::$extensions[$extnId])) {
898             return self::$extensions[$extnId];
3275     private function &extensions(&$root, $path = null, $create = false)  function in phpseclib3\\File\\X509
3311         $extensions = &$this->subArray($root, $path, $create);
3313         if (!is_array($extensions)) {
3318         return $extensions;
3331         $extensions = &$this->extensions($this->currentCert, $path);
3333         if (!is_array($extensions)) {
3338         foreach ($extensions as $key => $value) {
3340                 unset($extensions[$key]);
3345         $extensions = array_values($extensions);
3347         if (!isset($extensions[0])) {
3348             $extensions = array_splice($extensions, 0, 0);
3366         $extensions = $this->extensions($cert, $path);
3368         if (!is_array($extensions)) {
3372         foreach ($extensions as $key => $value) {
3391         $exts = $this->extensions($cert, $path);
3392         $extensions = [];
3396                 $extensions[] = $extension['extnId'];
3400         return $extensions;
3416         $extensions = &$this->extensions($this->currentCert, $path, true);
3418         if (!is_array($extensions)) {
3424         foreach ($extensions as $key => $value) {
3430                 $extensions[$key] = $newext;
3435         $extensions[] = $newext;
4072         if (isset(self::$extensions[$id]) && self::$extensions[$id] !== $mapping) {
4078         self::$extensions[$id] = $mapping;
4090         return isset(self::$extensions[$id]) ? self::$extensions[$id] : null;