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



pdf_scale — Sets coordinate scaling


bool pdf_scale(pdf, x, y);
resource pdf: PDF object identifier
double x: X axis scale amount
double y: Y axis scale amount


Always TRUE


Scales the coordinate system rather than the object itself. This affects not only x and y coordinates when placing shapes but the width, height, line width and radius of shapes as well.

In the example below, the coordinate system is scaled up by a factor of two each time. Note how the circle placement, the radius and the line width also change.


Since versions 3.0.6 and 4.0


Example 960. Draw circles


// create new document
$pdf = pdf_new();
pdf_begin_page($pdf, 500, 700);

// draw and stroke circle
pdf_circle($pdf, 50, 50, 10);

// scale a redraw a circle
pdf_scale($pdf, 2, 2);
pdf_circle($pdf, 50, 50, 10);

// scale and draw another circle
pdf_scale($pdf, 2, 2);
pdf_circle($pdf, 100, 100, 10);


// output document
$data = pdf_get_buffer($pdf);
header("Content-type: application/pdf");
header("Content-disposition: inline; filename=test.pdf");
header("Content-length: " . strlen($data));
echo $data;

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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