f::filename PHP Method

    static function filename($name)
    {
        return basename($name);
    }

 public function avatar()
 {
     if (isset($this->cache['avatar'])) {
         return $this->cache['avatar'];
     }
     // try to find the avatar
     $root = c::get('root') . DS . 'assets' . DS . 'avatars' . DS . $this->username() . '.{jpg,png}';
     if ($avatar = a::first((array) glob($root, GLOB_BRACE))) {
         return $this->cache['avatar'] = new Media($avatar, url('assets/avatars/' . f::filename($avatar)));
     } else {
         return $this->cache['avatar'] = false;
     }
 }