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pdf_get_value
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pdf_get_value

Name

pdf_get_value — Gets arbitrary value

Synopsis

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

Returns

Setting of value

Description

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

Version

Since version 4.0.1

Example

Example 941. Show image information

<?php

//create new document
$pdf = pdf_new();
pdf_open_file($pdf);
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);

pdf_end_page($pdf);
pdf_close($pdf);

// 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;
?>

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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 http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ 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.