Test, validate and match regular expressions
Matches URLs that start with http://, https://, or www. and end with the .net or .ro top-level domains. The middle portion uses a highly permissive alternation (including .+), so it greedily consumes nearly any characters between the prefix and the TLD suffix. It's useful for extracting or filtering links pointing to .net sites or Romanian (.ro) domains from text, though its greediness can cause over-matching across long strings.