Well, I don't think you can use the <> operator on an arrayref. It only works on filehandles (or simple scalar variables, which might contain a reference to the filehandle). Why not just <INPUT>?

Also, if you are splitting on commas, then you need to do that:

 
@lines = <INPUT>;
for ( 0 .. $#lines ) { 
  $url_info[$_] = [ split /,/ , $lines[$_] ];
}
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But maybe I am being incredibly dumb and you know clever perl tricks that I wot not of.

dave hj~