pdf_setrgbcolor(3) php man page | unix.com

PDF_SETRGBCOLOR(3)							 1							PDF_SETRGBCOLOR(3)

PDF_setrgbcolor - Set fill and stroke rgb color values [deprecated]

SYNOPSIS
       bool PDF_setrgbcolor (resource  $p, float  $red, float  $green, float  $blue)

DESCRIPTION
	Sets the current fill and stroke color to the supplied RGB values. Returns TRUE on success or FALSE on failure.

	This function is deprecated since PDFlib version 4, use PDF_setcolor(3) instead.

PHP Documentation Group 													PDF_SETRGBCOLOR(3)