AffiliateABC.com :Draws a curve

bool cpdf_curveto ( int $pdf_document , float $x1 , float $y1 , float $x2 , float $y2 , float $x3 , float $y3 [, int $mode ] )

Draws a Bezier curve from the current point to the point (x3 , y3 ) using (x1 , y1 ) and (x2 , y2 ) as control points.

pdf_document: The document handle, returned by cpdf_open().
x1: x-coordinate for the first control point
y1: y-coordinate for the first control point
x2: x-coordinate for the second control point
y2: y-coordinate for the second control point
x3: x-coordinate for the target
y3: y-coordinate for the target
mode: The optional parameter mode determines the unit length. If it is 0 or omitted the default unit as specified for the page is used. Otherwise the coordinates are measured in postscript points disregarding the current unit.

Returns TRUE on success or FALSE on failure.

cpdf_curveto