Thank you for your bug report.

The expected and actual results in your bug report are the same. Please describe what is wrong with the x-coordinate and what you expect.

Sorry. 

"Actual result" should have been :

with 5.2.11 :

bbox returned rectangle for a : -1  *  1  *  32  *  1  *  32  *  -38  *  -1  *  -38

bbox returned rectangle for k : -1  *  -1  *  37  *  -1  *  37  *  -57  *  -1  *  -57

bbox returned rectangle for j : -1  *  17  *  21  *  17  *  21  *  -57  *  -1  *  -57

Tabe, can you look at this one too please? :)

This problem occurs with imageftbbox() as well.

I developed a font-embedding system (http://fontjazz.com) and it has 
worked for a long time with PHP5.1 and earlier, but never with PHP 5.2 
or 5.3, where the coordinates (both X and Y) come out all wrong.

I'm using Windows for development, Linux for deployment, and I have to 
keep the production server running with PHP 5.1 for this reason - both 
Linux and Windows versions fail to give the right coordinates.

To help you debug this issue, I created the following test-script:

<?php

define('SAMPLE', @$_SERVER['QUERY_STRING'] ? $_SERVER['QUERY_STRING'] : 'abc');
define('SAMPLE_TTF', dirname(__FILE__).'/georgiai.ttf');
define('SAMPLE_SIZE', 100);
define('SAMPLE_PAD', 50);

$m = imagettfbbox(SAMPLE_SIZE, 0, SAMPLE_TTF, SAMPLE);

$width = $m[4]-$m[6] + 2*SAMPLE_PAD;
$height = $m[1]-$m[7] + 2*SAMPLE_PAD;

$baseline = abs($m[7]);

$img = imagecreatetruecolor($width,$height);
$red = imagecolorallocate($img,255,0,0);
$white = imagecolorallocate($img,255,255,255);

imagettftext(
  $img,
  SAMPLE_SIZE, # size
  0,           # angle
  SAMPLE_PAD,  # x
  SAMPLE_PAD+$baseline,  # y
  $white,
  SAMPLE_TTF,
  SAMPLE
);

imagerectangle(
  $img,
  $m[6]+SAMPLE_PAD, $m[7]+SAMPLE_PAD+$baseline, # upper left x,y
  $m[2]+SAMPLE_PAD, $m[3]+SAMPLE_PAD+$baseline, # lower right x,y
  $red
);

header('Content-type: image/png');
imagepng($img);

?>

You will need to adjust the SAMPLE_TTF path to point to a valid truetype file - the one I'm using is Windows standard Georgia Italics.

The output should be a white sample of text with a red border, and the border should grace the text, not overlap it.

For reference, here's what it looks like on Linux (GOOD):

http://mindplay.dk/temp/metrics/imagettf-good.png

And here's what it looks like on Windows (BAD):

http://mindplay.dk/temp/metrics/imagettf-bad.png

I just tried the latest XAMPP build (1.7.2 beta 2) for Windows, and the bug is still present.

If you run the script from a browser, you can add your own sample text by adding a query string, e.g.:

http://localhost/sample.php?abcdefg

Note that using a larger font-size (SAMPLE_SIZE) seems to increase the error. It seems that all the returned coordinates are off by a percentage, not by a fixed number of pixels.

I hope this helps solve the problem...

Hi,

Did you progress on this issue whicj sticks me to PHP 4.

Thanks for your answer.

rasmus, your observation is essential to understand this bug.
fix for bug#45600 also seems to work well.

With PHP_5_2 or trunk:

bbox returned rectangle for a : -1  *  2  *  38  *  2  *  38  *  -42  *  -1  *  -42

bbox returned rectangle for k : -1  *  -1  *  42  *  -1  *  42  *  -62  *  -1  *  -62

bbox returned rectangle for j : -1  *  17  *  23  *  17  *  23  *  -57  *  -1  *  -57

s/#45600/#49600/

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

It seems like this Bug is still present, both of the Testscripts 
provided by rasmus here and by ch+php in Bug #49600 produce 
correct results in PHP 5.0.5 and 5.2.5 but wrong results 
(x-coord of boundingbox shifted to left or right depending on 
Font and letter) on PHP 5.2.11 and 5.3.3

For proposed fix and further info/discussion, see bug #53504

Fixed with <http://git.php.net/?p=php-src.git;a=commit;h=f5f94d9c>.

Actually, this is a duplicate of bug #53504.