从完整域中删除域名[重复]

Question

This question already has an answer here:

• PHP Getting Domain Name From Subdomain 22 answers

I'm looking for a quick way of getting parts of a domain name:

Example: http://www.mydomain.com/something/hello.html

I need to get the "mydomain.com" part and nothing else.

But, the url may change sometime, for example:

http://mydomain.com/something/hello.html

http://www.mydomain.com/hello.html

http://mydomain.com

Any help would be great,

Thanks!

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Answer 1

string parse to first instance of '.com' and strip the rest of the domain name from string