Question

get domain name in php

Asked by: prowebinteractive

Im want to verify the domain name where my scripts are running

what I started with is

$_SERVER['HTTP_HOST']

the problem with this is that the result could be www.domain.com or domain.com

where I would like it to be domain.com always at all times only because I will be comparing the domain name with a field in the database to verify if they are allowed to be using my application anyone knows if there is a predefined variable for this or do i have to cut off the www.  in code ?

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Asked On
2006-03-29 at 07:29:17ID21793651
Tags

php

,

domain

,

get

,

name

Topic

PHP Scripting Language

Participating Experts
8
Points
500
Comments
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Answers

 

by: snoyes_jwPosted on 2006-03-29 at 07:32:42ID: 16322604

Nope, I think you have to cut it off in the code.
$domain = preg_replace("/^www\./", "", $_SERVER['HTTP_HOST']);

 

by: syrmaPosted on 2006-03-29 at 07:33:09ID: 16322609

there is no such variable,
I think you should cut off the "www." in the code.

 

by: gileze33Posted on 2006-03-29 at 07:47:14ID: 16322769

Just simply use
$domain = str_replace("www.","",$_SERVER['HTTP_HOST']);

 

by: snoyes_jwPosted on 2006-03-29 at 07:51:30ID: 16322830

Problem with str_replace is if your domain is something like 'mysiteonwww.com', you'll come away with just 'mysiteoncom'

 

by: prowebinteractivePosted on 2006-03-29 at 08:05:34ID: 16322997

and what if its a subdomain, or there is no www.

 

by: snoyes_jwPosted on 2006-03-29 at 08:14:16ID: 16323083

if there's no www, no problem.

The below will return 'domain.com' for all of the following:
www.domain.com
domain.com
subdomain.domain.com
www.subdomain.domain.com

$domain = preg_replace("/^(.*\.)?([^.]*\..*)$/", "$2", $_SERVER['HTTP_HOST']);

 

by: snoyes_jwPosted on 2006-03-29 at 08:24:43ID: 16323193

Here are a few other ways to do it:

preg_match("/[^.]*\.[^.]*$/", $_SERVER['HTTP_HOST'], $domain);
echo $domain[0];

$pieces = explode(".", strrev($_SERVER['HTTP_HOST']));
echo strrev($pieces[0] . "." . $pieces[1]);

 

by: prowebinteractivePosted on 2006-03-29 at 08:39:28ID: 16323375

holy sweet jesus  nice but confusing, it works and thats what counts, I have tried it on every type of domain yet though  such as domain.qc.ca   dpo you know if it will work on this domain name ?

 

by: siliconbritPosted on 2006-03-29 at 08:45:50ID: 16323444



Just a quick pointer - I achieve the same using the IP Address of the server:

   $_SERVER['SERVER_ADDR']

  ..and I compare this with the IP address to which the domain name should resolve.

Basically, this avoids you having to do *any* additional comparison or string massaging.

 

by: snoyes_jwPosted on 2006-03-29 at 08:46:35ID: 16323451

No, that would just return qc.ca

 

by: theonlygoodisknowledgePosted on 2006-03-29 at 19:13:59ID: 16328981

So, you only want to cut off "www." if "www." is at the beginning?
That's an easy one:

<?php

$_domains = array(
    "www.domain.qc.ca",
    "www.domain.com",
    "www.subdomain.domain.com",
    "domain.qc.ca",
    "www.domain.org",
    "domain.org",
    "subdomain.company.com",
    "mysiteonwww.com",
    "www.mysiteonwww.com",
    "www.www.com"
);

foreach ($_domains as $_domain) {
    echo preg_replace("/^www\./", "", $_domain);
    echo "<BR>\n";
}

?>

--brian

 

by: tolgaongPosted on 2006-04-19 at 01:11:22ID: 16485289

$subject="http://www.experts-exchange.com";
if (preg_match('/\\b(https?|ftp):\/\/www\.(?P<domain>[-A-Z0-9.]+)\\z/i', $subject, $regs)) {
      $result = $regs['domain'];
      }
echo($result);

 

by: zanus123Posted on 2009-04-07 at 00:21:41ID: 24084561

have you tried simply using

$theString = parse_url($_SERVER['HTTP_HOST']);
$theDomain = $theString['host'];
echo $theDomain;

                                              
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by: zparksPosted on 2011-02-08 at 19:17:22ID: 34848635

<?php
$string = "kancrutwww.badrun.co.id";

$pos = strpos($string,"www");

$string = substr($string,($pos+4)); //$pos is the location for www, we have to add 4steps to get rid of the "www."

echo $pos."<br>";


echo $string;
?>
                                              
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something like this?

20120131-EE-VQP-002

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