How to pick domain name from an url string with php regex?

regex is unnecessarily complicated for this.  A simplier solution is

strpos( )
http://us2.php.net/manual/en/function.strpos.php

$position = strpos($url, 'mysite.com');

will give you the starting position of your domain within the url string.

The thing is not only mysite.com it can be yoursite.com or yoursite.co.uk etc...

Below you can find the edited question:

Hello,

I have a problem, I have several url strings like below:


http://www.mysite.com/?action=1234
http://www.mysite.co.uk/doit.php?=abc
http://www.mysite.com/category/myarticle/
http://mysite.com/myresearch/15.html
http://subdomain.mysite.com/thelist/abcd.php
http://mysite.co.uk/book/booking123.php
...
..
.


The list goes on and on, is there any regex func that fits all the endless posibilities to pick up the domain name "mysite.com" or "mysite.co.uk" or "yoursite.co.uk" or any other domain names from the url strings?

Any help greatly appreciated...
Thx

$string = 'http://subdomain.mysite.com/thelist/abcd.php';
preg_match('/[a-zA-Z0-9\-]+\.[a-zA-Z]{2,6}(?=\/)/',$string,$matches);
echo $matches[0];

Thank you James but,

The below is giving "co.uk" not "mysite.co.uk"

$string = 'http://mysite.co.uk/thelist/abcd.php';
preg_match('/[a-zA-Z0-9\-]+\.[a-zA-Z]{2,6}(?=\/)/',$string,$matches);
echo $matches[0];

Any ideas?

James,

You are really fast,

The below one gives "mysite.co.uk" which is very good

$string = 'http://deepersubdomain.subdomain.my.co.uk/book/booking123.php';
preg_match('/[a-zA-Z0-9\-]+\.[a-zA-Z\.]{2,6}(?=\/)/',$string,$matches);
echo $matches[0];

but the below one gives "game.tw"

$string = 'http://deepersubdomain.subdomain1.my.game.tw/book/booking123.php';
preg_match('/[a-zA-Z0-9\-]+\.[a-zA-Z\.]{2,6}(?=\/)/',$string,$matches);
echo $matches[0];

Any ideas? Thank you by the way...

do you want it to include the subdomains?

The below one gives "mysite.co.uk" which is very good

will be

The below one gives "my.co.uk" which is very good

for the previous post...

No I want to display "my.game.tw" (domain name) for that...

$string = 'http://deepersubdomain.subdomain1.my.game.tw/book/booking123.php';
preg_match('/[a-zA-Z0-9\-]+\.[a-zA-Z\.]{2,7}(?=\/)/',$string,$matches);
echo $matches[0];

ok give me a few mins things are getting more complicated... I will write clearly what I want...

Thank you for your efforts...