function setBorderVisibility($visibility) {
        $this->_borderVisibility = array_merge(
            $this->_borderVisibility,
            array_intersect_key(
                $visibility,
                $this->_borderVisibility
            )
        );
    }
function setBorderVisibility($visibility) {
        $this->_borderVisibility = array_merge(
            $this->_borderVisibility,
            array_intersect_key(
                $visibility,
                $this->_borderVisibility
            )
        );
    }
function setBorderVisibility ( $ visibility ) { $ this -> _borderVisibility = array_merge ( $ this -> _borderVisibility , array_intersect_key ( $ visibility , $ this -> _borderVisibility ) ) ; }
Set which borders shall be shown.

@param array $visibility Visibility settings.
Allowed keys: left, right, top, bottom, inner

@return void
@see    $_borderVisibility
Set which borders shall be shown .