What is PhpDig?
PhpDig is a PHP MySQL based
Web Spider & Search Engine.



cpdf_circle — Draws a circle


bool cpdf_circle(pdfdoc, x, y, radius[, mode]);
resource pdfdoc: PDF document identifier
double x: Center x coordinate
double y: Center y coordinate
double radius: Circle radius
int mode (optional): Units mode


TRUE on success or FALSE on error


Draws a circle from center point x , y with raduis radius . Don't forget to stroke the object with pdf_stroke() , and you optionally fill the obect with functions such as pdf_fill_stroke() and pdf_fill() . Don't forget to stroke the object, otherwise the shape will not be displ in the PDF document.

If mode is specified, coordinates are calculated in PostScript points. There are usually 72 PostScript points to an inch. If not specified or set to 0, then the pages default units are used.


Since versions 3.0.8 and 4.0


Example 119. Draw concentric circles

// start a PDF document
$cpdf = cpdf_open(0, "test.pdf");

// create a 600x400 page
cpdf_page_init($cpdf, 1, 0, 600, 400, 1);

// draw circles of increasing radius
for ($i=1; $i<10; $i++) {
    cpdf_circle($cpdf, 200, 300, $i*10);

// close and write document

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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