(PHP 4)
swf_viewport — Select an area for future drawing
$xmin
, float $xmax
, float $ymin
, float $ymax
)
Selects an area for future drawing for xmin to
xmax and ymin to
ymax, if this function is not called the
area defaults to the size of the screen.
xmin
xmax
ymin
ymax
没有返回值。