I have a base64 encoded png, how do I write the image to a file in PHP?

Question

What's the proper way in PHP to create an image file (PNG), when I have the base64 encoding?

I've been playing around with:

file_put_contents('/tmp/'. $_REQUEST['id'].'.png', $_REQUEST['data']);

do I need to decode? should I be using the gd library?

Answer 1

My best guess is that you simply need to call base64_decode() on $_REQUEST['data'] before writing it to the file. That should be plenty enough :).

Answer 2

I would think you'd want to decode with base64_decode() unless you are only using it like they are here HERE.

The thing I am sure of is that you will want to sanitize $_REQUEST['id'] before using it.