Difficulties creating PNG pictures

Yannick Turgeon

Hello all,

I have a web page in which I create a simple PNG picture using PHP. It was
correctly displayed until I upgrade my PC (Linux/Mandrake 9.1). Now my
little picture is a black square!

Anyone knows the reason?

I've got those two png libraries installed. Does PHP need some more to
adequatly create and manage PNG pictures?
libpng3-devel 1.2.5-2mdk
libpng3-static-devel Version : 1.2.5-2mdk

TIA

Yannick

Jul 16 '05 #1

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2621

Shawn Wilson

Yannick Turgeon wrote:

I have a web page in which I create a simple PNG picture using PHP. It was
correctly displayed until I upgrade my PC (Linux/Mandrake 9.1). Now my
little picture is a black square!

Anyone knows the reason?

I've got those two png libraries installed. Does PHP need some more to
adequatly create and manage PNG pictures?
libpng3-devel 1.2.5-2mdk
libpng3-static-devel Version : 1.2.5-2mdk

What version of GD are you using? Are you getting any errors? Could you post
code snippets?

Shawn
--
Shawn Wilson
sh***@glassgian t.com
http://www.glassgiant.com

Jul 16 '05 #2

Yannick Turgeon

Shawn,

Thanks to reply. After reading your message, I took a look at the code
generating my picture. I was using the function "imagecopyresiz ed" and it
seems that the result of this call was now a all black square. Don't know
why. I changed the creation of my destination image from "imagecreat e" to
"imagecreatetru ecolor" and it finally work fine. Don't know the initial
cause but have found an solution.

Yannick

Yannick Turgeon wrote:
I have a web page in which I create a simple PNG picture using PHP. It
was correctly displayed until I upgrade my PC (Linux/Mandrake 9.1). Now
my little picture is a black square!

Anyone knows the reason?

I've got those two png libraries installed. Does PHP need some more to
adequatly create and manage PNG pictures?
libpng3-devel 1.2.5-2mdk
libpng3-static-devel Version : 1.2.5-2mdk

What version of GD are you using? Are you getting any errors? Could you
post code snippets?

Shawn
--
Shawn Wilson
sh***@glassgian t.com
http://www.glassgiant.com

Jul 16 '05 #3

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