PHP - getting a site's favicon and converting it to png if necessary

Question

For any given site \"example.domain.tld\" or merely \"domain.tld\" I need to do the following in PHP:

• If the site has a favicon, get it wherever it is

Answer 1

Coverting to PNG is not that hard.

I don't get the question entirely, is this fav icon on your site or on other sites? If on other sites, you will have to parse fetched HTML and then somehow load favicon.