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Posted by Libit on 01/03/06 18:18
tedd wrote:
>> I have png image with transparent background, and 1 jpg file.
>> I use imageCopyMerge to paste the png image on the jpg image.
>>
>> the result image contain no transparent background mean the png file
>> have white background when its suppose to be transparent
>>
>> what is the simple and best way to make this work.
>>
>> tanks in advance. :)
>
> Libit:
>
> I was working on the same thing. The following is a solution -- but,
> simple and best are relative.
>
> This was taken from "PHP Graphics Handbook" by Kent et al.
>
> <?
> $original=imagecreatefromjpeg("apollo.jpg");
> $watermark=imagecreatefrompng("xssportstransparent.png");
>
> $osx=imagesx($original);
> $osy=imagesy($original);
> $wsx=imagesx($watermark);
> $wsy=imagesy($watermark);
>
> imagecopy($original, $watermark, ($osx-$wsx)/2, ($osy-$wsy)/2, 0, 0,
> $wsx, $wsy);
>
> imagepng($original, "apollo_trans.png");
>
> ?>
> <html>
> <body>
> <table>
> <tr><td align=center>Orignal Image</td><td
> align=center>Watermark</td><td align=center>Orignal Image with
> Watermark</td></tr>
> <tr><td><img src="apollo.jpg"></td><td><img
> src="xssportstransparent.png"></td><td><img
> src="apollo_trans.png"></td></tr>
> </table>
> </body>
> </html>
>
> Demo at:
>
> http://xn--ovg.com/watermark
>
> HTH's
>
> tedd
>
thank you tedd , my original code is pretty the same.
and I solved the problem using function called
imagecopyresampled()
the function keep the transparent background of the png file.
from some sources on the net I read the its may be related to some miss
support in png 24bit. but I didn't get too much to it.
thanks again for taking the time to write and help me.
I think this is on solution for this problem I found it the easy one.
ah , one more thing, in my code I save the result image as an Jpg file.
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