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Hijack-proof forms. Surveys. List building.
Solid, safe website tools.
Whatever your need, Will Bontrager builds powerful software solutions.
Solid, safe website tools.
Whatever your need, Will Bontrager builds powerful software solutions.
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Extracting Domain Name from URLBy Will Bontrager I oftentimes need to extact the domain name form a URL in the software I write. And I thought I would share my method. This is using the Perl language. The method consists of 3 consecutive regular expressions. It discards any leading www. from the domain name. But it does not discard other third-level domain names. First, remove the http/https and possible www. from the front of the URL: $url =~ s!^https?://(?:www\.)?!!i; The above uses "!" as operator delimiters instead of "/" to avoid having to escape the embedded "/" characters. The "i" at the end is to specify case insensitiveness. Then, strip off everything from the first "/" to the end of the URL (doing nothing if there is no "/"): $url =~ s!/.*!!; Last, in case the URL was http://example.com?stuff or http://example.com#stuff or http://example.com:80/whatever, also strip off everything from the first "?" or "#" or ":", if present: $url =~ s/[\?\#\:].*//; The value of $url is now the domain name by itself. February 15, 2007 Please note: Articles on this website are presented "as is". However - If you have a question about a CGI script, HTML, CSS, PHP, or JavaScript
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