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

[Shawn Wilson]

Re: Difficulties creating PNG pictures

Yannick Turgeon wrote:
[color=blue]
> 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[/color]

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

Shawn
--
Shawn Wilson
shawn@glassgian t.com

http://www.glassgiant.com

[Yannick Turgeon]

Re: Difficulties creating PNG pictures

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
[color=blue]
> Yannick Turgeon wrote:
>[color=green]
>> 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[/color]
>
> What version of GD are you using? Are you getting any errors? Could you
> post code snippets?
>
> Shawn
> --
> Shawn Wilson
> shawn@glassgian t.com
> http://www.glassgiant.com[/color]