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<?php print get_domain("somedomain.co.uk"); // outputs 'somedomain.co.uk' function get_domain($domain) { if (preg_match('/(?P<domain>[a-z0-9][a-z0-9\-]{1,63}\.[a-z\.]{2,6})$/i', $domain, $regs)) { return $regs['domain']; } return false; }

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