PDF_get_value

(PHP 4 >= 4.0.1, PECL pdflib >= 1.0.0)

PDF_get_value — Get numerical parameter

说明

PDF_get_value ( resource $p , string $key , float $modifier ) : float

Gets the value of some PDFlib parameter with numerical type.

add a note

User Contributed Notes 7 notes

down

Geoffrey dot Hoffman at gmail dot com ¶

2 years ago


If you're trying to get the version of the installed library, you can study this example:

<?php
$p=pdf_new();
echo pdf_get_value($p, 'major', 0).".";
echo pdf_get_value($p, 'minor', 0).".";
echo pdf_get_value($p, 'revision', 0);
?>

Outputs something like 

9.0.7

down

ceo at l-i-e dot com ¶

17 years ago


See the main PDF manual page (the "PDF" link to the left) for the magic words that this function accepts.

down

reneATcola.cc ¶

18 years ago


To get the current font size, use something like this:



<?php $fontheight = PDF_get_value($pdf, "fontsize"); ?>

down

Anonymous ¶

13 years ago


Note:

imagewidth and imageheigh do not return the actual width and height.  Instead they are 2 times the actual width and height.  I don't understand why, but this seems to be the case with multi page tiffs (and maybe other images).  In order to insert a multi page tiff into a PDF without out of control extra space do the following:

<?php
$pdf = pdf_new();
pdf_set_parameter($pdf, "licensefile", "/etc/pdflib/licensekeys.txt");
pdf_open_file($pdf, "/tmp/tifftest.pdf");

for ($i=1; $i<=4; $i++) {

$image = pdf_open_image_file($pdf, "tiff", "/tmp/test.tif", "page", $i);

$w = pdf_get_value($pdf, "imagewidth", $image);
$h = pdf_get_value($pdf, "imageheight", $image);

// $w and $h are at this point 2*width and 2*height!!

// To place the image without having lots of extra space:

pdf_begin_page($pdf, $w/2, $h/2);
pdf_place_image($pdf, $image, 0, 0, 0.5);
pdf_close_image($pdf, $image);
pdf_end_page($pdf);

}
 
pdf_close($pdf);

?>

down

_meto ALT+q web.de ¶

14 years ago


There should be many more. For example I found this in the manual, wich was very helpfull for me:

$textx = pdf_get_value($p, "textx", 0);
$texty = pdf_get_value($p, "texty", 0);

These will extract the current textposition in the document.

down

robert.chambersATroche.com ¶

15 years ago


The Magic keywords are:

  IMAGEWIDTH,   IMAGEHEIGHT,   RESX,  RESY,
  CAPHEIGHT,  ASCENDER,  DESCENDER,  FONT

I looked in the sourcecode ...

down

-2

Anonymous ¶

13 years ago


$width = PDF_get_value($p, "imagewidth", $image);

add a note

备份地址：http://www.lvesu.com/blog/php/function.pdf-get-value.php