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



pdf_get_value — Gets arbitrary value


double pdf_get_value(pdf, key[, modifier]);
resource pdf: PDF object identifier
string key: Value name
double modifier (optional): Value modifier


Setting of value


Gets the current setting of a value in the PDF document. This could be a default value or a value set using pdf_set_value() . Only a subset of the values able to be set with pdf_set_value() can be retrieved using this function. There are leading, textrise, horizscaling, textrendering, charspacing and wordspacing. New values that can be accessed are:

font Identifier of the current font set with pdf_setfont()
fontsize Current size of the font set with pdf_setfont() .
capheight Height of a capital letter of the loaded font
ascender Height of a letter of the loaded front from the baseline to the top of the letter
descender Height of the descending portion of a font from the baseline to the bottom of a font. For example, the distance from the baseline to the bottom of the letter 'p'
textx X coordinates of the current text position
texty Y coordinates of the current text position
currentx X coordinates of the current point
currenty Y coordinates of the current point
imagewidth Width in pixels of the currently loaded image
imageheight Height in pixels of the currently loaded image
resx Horizontal resolution of the currently loaded image
resy Vertical resolution of the currently loaded image


Since version 4.0.1


Example 941. Show image information


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

// get image width and height
$im = pdf_open_image_file($pdf, "png", "logo.png");
$imgx = pdf_get_value($pdf, "imagewidth", $im);
$imgy = pdf_get_value($pdf, "imageheight", $im);
pdf_close_image($pdf, $im); 

// display image information
$font = pdf_findfont($pdf, "Courier", "host", 0);
pdf_setfont($pdf, $font, 10);
pdf_show_xy($pdf, "Image width: $imgx", 20, 650);
pdf_show_xy($pdf, "Image height: $imgy", 20, 640);


// 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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