Perl Regex Domain Name. PRXMATCH regular-expression-id perl-regular-expression source This is what will work for regular expression at the simplest form of regular expression. Validate a Domain Name.
Accepting _ in username. 1 It allows usernames with 1 or 2 alphanum characters or 3 chars can have -_ in the middle. From the domain name.
It discards any leading www.
Domain Name Regular Expression Pattern -A-Za-z0-9-163. The package is somewhere in the middle of the page linked to. Case sensitive regex to verify if a string is a valid domain name. Else echo Wrong url.