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Php – How do i get the string after the first dot in a domain name example how do I get com in a .com domain or co.uk in a .co.uk domain

I am want to know how a regular expression to get the com or co.uk in a domain name

$domain = abcde.co.uk;
$domain2 = abcde.com
    
$tdl = preg_replace('/^.*.([^.]+)$/D', '$1', $domain);
echo $tdl;

$tdl2 = preg_replace('/^.*.([^.]+)$/D', '$1', $domain);
echo $tdl2;

it works in the second but not the first.

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2

Answers


  1. 0

    You could do substr($domain, strpos($domain, '.') + 1). Foolproof, and maybe more readable than a regular expression.

    Caveat: it only works if your string does contain a .

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  2. 0

    This code will output whatever extension that comes after the first dot (using strpos() is a better practice, only use this code if you need it to be using Regex):

    $domain = "abcde.com";
$tdl = preg_replace('/^[^.]+.(.*)$/', '$1', $domain);
echo $tdl;
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