imagesetthickness() sets the thickness of the lines
drawn when drawing rectangles, polygons, ellipses etc. etc. to
thickness pixels.
Parameters
-
image
An image resource, returned by one of the image creation functions,
such as imagecreatetruecolor().
- thickness
Return Values
Returns TRUE
on success or FALSE
on failure.
Notes
Note: This function requires GD 2.0.1 or later (2.0.28 or later is recommended).