Question

I have a small Minecraft server where people can upload their skins. Minecraft skins are small png images. Is it possible to convert this png image to another png image via PHP (e.g. GD library)?

I have made this image to help me explain what I am trying to do:

Answer 1

Yes, it’s possible. You’d need multiple imagecopy commands to pull out sections of the skin image and paste it into the proper spots in the “output” image.

Basic order of operations would be:

$input = imagecreatefrompng('skin.png');
$output = imagecreatetruecolor(800, 600); // whatever the dimensions should be.

imagecopy($output, $input, 0,0, 10,20, 50,60);
imagecopy(...);
...
...

The first copy command is saying “take a 50×60 section of the input image, starting at coordinates 10×20, and paste it into the destination image in the top left corner”.

The actual sequence/coordinates/sizes will be up to you to figure out.

If you’re not doing a 1:1 copy of the image and are doing resizing, then you’ll want imagecopyresampled() instead.