Preg_match domain

[johanmichel]

Hi guys,

I'm new to this forum and have a question. Though I sincerely hope I can help others also in the future.

The problem I am having is that I need to extract domains from some text. The text looks like this f.e.:

'iamadomain.com www.adomain.com www.faulty Domain.com www.Faulty domain I'm Not even a Domain, etc.'

So in this texts there are a lot of fault domains, I just need the domain 'iamadomain.com', so the domain without www. (or if there is a www., just the domain after it).

For this I wrote this regular expression:

    if (preg_match("/^[a-zA-Z0-9]*((-|\.)?[a-zA-Z0-9])*\.([a-zA-Z]{2,4})$/", $domain))
    {echo "$name found!\n"; break;}

But somehow this just does not work and I have no idea why. When I leave behind the ^ sign the output has the domains but also the non-domains in it.

Any idea?

Thanks! 🙂

[laserlight]

You could try using [man]parse_url/man to get the hostname which you then compare.