(PHP 4, PECL pdflib >= 1.0.0)
PDF_curveto — Draw Bezier curve
$p
   , float $x1
   , float $y1
   , float $x2
   , float $y2
   , float $x3
   , float $y3
   )
   Draws a Bezier curve from the current point, using 3 more control points.
   Returns TRUE on success or FALSE on failure.