How would one compress GIF image file in PHP5 ?
I know that its possible to do with JPG like this imagejpeg($resource, $filename, $quality) according to http://us.php.net/manual/en/function.imagejpeg.php
+2
A:
JPG is a lossy compression. This means that you can use "quality parameter" to adjust size / quality ratio.
GIF is a lossless compression, you cannot get better compression by adjusting quality.
To create a GIF image use imagegif(...)
http://us.php.net/manual/en/function.imagegif.php
qbeuek
2010-09-14 12:46:09
I know how to create gif image, but I did not know that you can't compress it. Thank you.
emcgfx
2010-09-14 12:51:19
The gif format compresses data, but you cannot make it smaller by adjusting quality. If you like my answer, please accept it with the green tick.
qbeuek
2010-09-14 13:20:10
A:
If you want to open a GIF image, look at the function imagecreatefromgif: http://www.php.net/manual/en/function.imagecreatefromgif.php
The result can be passed to imagejpeg to be saved as a JPEG. Depending on the image, this might be pointless.
geon
2010-09-14 12:49:33