how to get URL host using php

Question

I would like to get the host name of any url for example if i've the following url

$url = "http://www.google.com";

then i want to get only google what is after dot . and before extension dot . so that it can be applied for all types of urls.

so the results should be google ! i think this might needs regex or somehow any idea how to do it , Thanks.

What if the URI has (sub)domains prefixed? i,e http://office1.dept1.google.com — pankar
– pankar, Commented Oct 2, 2012 at 11:12

Baba · Accepted Answer · 2012-10-02 11:44:21Z

8

You can try

echo __extractName("http://google.com"); 
echo __extractName("http://office1.dept1.google.com");
echo __extractName("http://google.co.uk");


function __extractName($url)
{
  $domain = parse_url($url , PHP_URL_HOST);
  if (preg_match('/(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$/i', $domain, $list)) {
    return substr($list['domain'], 0,strpos($list['domain'], "."));
  }
  return false;
}

Output

google
google 
google

edited Oct 2, 2012 at 11:44

answered Oct 2, 2012 at 11:38

Baba

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1 Comment

Mokhlesur Rahman Over a year ago

+ 1, What about localhost without any domain alias?

Community · Accepted Answer · 2017-05-23 12:32:45Z

2

You should have a look at PHP's parse_url() function which returns an associative array of the various components that constitute a URL.

$url = "http://www.google.com";
print_r(parse_url($url));

Will echo the following array.

Array ( [scheme] => http [host] => www.google.com )

The above function will just give you a start. Check into the following Stackoverflow archives on how to take it up from here.

PHP Getting Domain Name From Subdomain

Get domain name (not subdomain) in php

PHP function to get the subdomain of a URL

EDIT (few more archives - I'm not sure what you googled/tried)

how to get domain name from URL

Extract Scheme and Host from HTTP_REFERER

edited May 23, 2017 at 12:32

CommunityBot

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answered Oct 2, 2012 at 11:22

verisimilitude

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3 Comments

Waleed Khan Over a year ago

Note that you can also pass PHP_URL_HOST as the second parameter, and it will just return the hostname instead of an array.

Reham Fahmy Over a year ago

well based on your idea and very amazing archives, i will use 'explode' and then will results an array where i can print only the exact part of url i want. ~ thanks

verisimilitude Over a year ago

for sure. Next time around, ensure that you "google" :) Lest you'll either be downvoted or your question will be closed.

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