How do you strip out the domain name from a URL in php?

Question

Im looking for a method (or function) to strip out the domain.ext part of any URL thats fed into the function. The domain extension can be anything (.com, .co.uk, .nl, .what

Answer 1

Solved this...

Say we're calling dev.mysite.com and we want to extract 'mysite.com'

$requestedServerName = $_SERVER['SERVER_NAME']; // = dev.mysite.com

$thisSite = explode('.', $requestedServerName); // site name now an array

array_shift($thisSite); //chop off the first array entry eg 'dev'

$thisSite = join('.', $thisSite); //join it back together with dots ;)

echo $thisSite; //outputs 'mysite.com'

Works with mysite.co.uk too so should work everywhere :)

Answer 2

Following code will trim protocol, domain and port from absolute URL:

$urlWithoutDomain = preg_replace('#^.+://[^/]+#', '', $url);

Answer 3

parse_url turns a URL into an associative array:

php > $foo = "http://www.example.com/foo/bar?hat=bowler&accessory=cane";
php > $blah = parse_url($foo);
php > print_r($blah);
Array
(
    [scheme] => http
    [host] => www.example.com
    [path] => /foo/bar
    [query] => hat=bowler&accessory=cane
)