Figure 12-7. imagepolygon.array imagepsbbox(string text, integer font_identifier, integer
size, integer spacing, integer letting, double angle)
The imagepsbbox function returns an array containing a pair of coordinates that specify a
bounding box that would surround a theoretical string of text. The first two numbers are
the x and y values of the lower-left corner. The second pair of numbers specify the upper-
right corner.