Thread: Parse a URL in PHP to return domain
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Old 11-01-2004, 06:49 AM   #35 (permalink)
deadserious
Senior Member
Join Date: Aug 2002
Posts: 1,255
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Cool, here's some more new stuff. It probably needs some adjustments and such, but I think it at least "almost" works. You would just need to add/remove the second level domains that you want to be matched. Of course it could be made so you could add/remove these through a form or something, but this is just an example of how or "if" it even functions for now.
PHP Code:
<?php 

function getdomain($url) {

$url = strtolower($url);

$slds = 
    '\.co\.uk|\.me\.uk|\.net\.uk|\.org\.uk|\.sch\.uk|
    \.ac\.uk|\.gov\.uk|\.nhs\.uk|\.police\.uk|
    \.mod\.uk|\.asn\.au|\.com\.au|\.net\.au|\.id\.au|
    \.org\.au|\.edu\.au|\.gov\.au|\.csiro\.au';

    preg_match (
        "/^(http:\/\/|https:\/\/|)[a-zA-Z-]([^\/]+)/i",
        $url, $matches
    );

    $host = $matches[2];

    if (preg_match("/$slds$/", $host, $matches)) {
        preg_match (
            "/[^\.\/]+\.[^\.\/]+\.[^\.\/]+$/", 
            $host, $matches
        );
    } 
    else {
        preg_match (
????: NamePros.com http://www.namepros.com/programming/53456-parse-a-url-php-return-domain.html
            "/[^\.\/]+\.[^\.\/]+$/", 
            $host, $matches
        );
    }
    return "{$matches[0]}";
} 

$url1 = "http://WWW.NAMEPROS.COM/showthread.php?t=53456"; 
$url2 = "https://www.direct.gov.uk/Homepage/fs/en";    
$url3 = "http://horribly.long.subdomains.file.net/index.php"; 
$url4 = "http://66.98.205.16/tester";  # just for fun
$url5 = "http://WWW.somedomain.pros.com.au/dir/file.html"; 
$url6 = "https://www.www2.hosting.org.uk/home/index.php?file=1";    
$url7 = "http://sub.sub2.sub3.sub4.cars.com.au/index.php"; 
$url8 = "http://66.227.205.43/files/index.pl";  # just for fun2
$url9 = "http://WWW.BIGDOMAIN.co.uk/long/file/dir/path/enter.htm"; 
$url10 = "https://www.er.doctors.net.uk/";    
$url11 = "http://number.2.3.4.711.com/"; 
$url12 = "http://66.98.205.16/tester/ip.a/files";  # just for fun3   

echo "<br>url: $url1 <Br>domain: ".getdomain($url1)."<br>";
echo "<br>url: $url2 <Br>domain: ".getdomain($url2)."<br>";
echo "<br>url: $url3 <Br>domain: ".getdomain($url3)."<br>";
echo "<br>url: $url4 <Br>domain: ".getdomain($url4)."<br>";
echo "<br>url: $url5 <Br>domain: ".getdomain($url5)."<br>";
echo "<br>url: $url6 <Br>domain: ".getdomain($url6)."<br>";
echo "<br>url: $url7 <Br>domain: ".getdomain($url7)."<br>";
????: NamePros.com http://www.namepros.com/showthread.php?t=53456
echo "<br>url: $url8 <Br>domain: ".getdomain($url8)."<br>";
echo "<br>url: $url9 <Br>domain: ".getdomain($url9)."<br>";
echo "<br>url: $url10 <Br>domain: ".getdomain($url10)."<br>";
echo "<br>url: $url11 <Br>domain: ".getdomain($url11)."<br>";
echo "<br>url: $url12 <Br>domain: ".getdomain($url12)."<br>";
?>
The current results from the above example url's, so you can get an idea, I think would look something like this:

url: http://horribly.long.subdomains.file.net/index.php
domain: file.net

url: http://66.98.205.16/tester
domain:

url: http://WWW.somedomain.pros.com.au/dir/file.html
domain: pros.com.au

url: https://www.www2.hosting.org.uk/home/index.php?file=1
domain: hosting.org.uk

url: http://sub.sub2.sub3.sub4.cars.com.au/index.php
domain: cars.com.au

url: http://66.227.205.43/files/index.pl
domain:

url: http://WWW.BIGDOMAIN.co.uk/long/file/dir/path/enter.htm
domain: bigdomain.co.uk

url: https://www.er.doctors.net.uk/
domain: doctors.net.uk

url: http://number.2.3.4.711.com/
domain: 711.com

url: http://66.98.205.16/tester/ip.a/files
domain:
Last edited by deadserious; 11-01-2004 at 08:39 AM.
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