When trying to load a png image in GD, I get the error (Mozilla Firefox)
"cannot display image, because it contains errors"; IE just shows an empty
'image-error' box.
When loading a large enough image, it does build up the image
gradually until it's almost finished, but then the partly visible image
is replaced by the error message/error box as described above.
It seems like indexed <256cols pngs are not subject to this problem. I've
read that earlier versions of GD were limited to handling indexed pngs
only, but recent GD versions (>=2.0) should not.
My configuration:
GNU/Debian Linux 3.0, Apache 1.3.31, PHP 4.3.4, GD 2.0 'or higher'
(bundled with PHP), libpng12-0 1.2.5.0-7,
Also tested on GNU/Slackware Linux 9.0 with Apache 2.0.49, PHP 4.3.6,
GD 2.0.22, with similar results.
The testcode I use:
<?php
$photo = "image.png" ;
$im = @ImageCreateFro mPng ($photo);
header ("Content-type: image/png");
ImagePng ($im);
?>
Anyone got a clue? Thanks in advance.
Wim
2  3410 
On Sun, 29 Aug 2004 16:52:40 +0200, "Xiao Tencas" <xi*********@gm x.net> wrote: When trying to load a png image in GD, I get the error (Mozilla Firefox)
"cannot display image, because it contains errors"; IE just shows an empty
'image-error' box.
When loading a large enough image, it does build up the image
gradually until it's almost finished, but then the partly visible image
is replaced by the error message/error box as described above.
A wild guess; how long does the image take to download? Is it exceeding the
setting of max_execution_t ime? This would dump an error message in the image
data and so could cause this symptom.
--
Andy Hassall / <an**@andyh.co. uk> / <http://www.andyh.co.uk >
<http://www.andyhsoftwa re.co.uk/space> Space: disk usage analysis tool
On Sun, 29 Aug 2004 16:52:40 +0200, Xiao Tencas wrote: The testcode I use:
<?php
$photo = "image.png" ;
$im = @ImageCreateFro mPng ($photo);
header ("Content-type: image/png");
ImagePng ($im);
?>
No clue. But to debug GD images, you can change the header to
"Content-type: text/plain" temporarily. This will dump the contents to the
screen as plain text, including error messages!
--
Jeffrey D. Silverman | je**********@jh u.edu **
Website | http://www.newtnotes.com
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