org\bovigo\vfs\vfsStreamAbstractContent::isReadable PHP Метод

    public function isReadable($user, $group)
    {
        if ($this->user === $user) {
            $check = 0400;
        } elseif ($this->group === $group) {
            $check = 040;
        } else {
            $check = 04;
        }
        return (bool) ($this->permissions & $check);
    }