<?php /** * Returns list of subdomains * @param string $domain * @return array */ function getAllSubDomain($domain) { //strip '<prefix>:' first $dpos = strpos($domain, ':'); if ($dpos !== false) { $domain = substr($domain, $dpos+1); } else { $domain = $domain; } $domainParts = explode('.', str_replace("'", '', $domain)); $ret = array(); for ($off = sizeof($domainParts) -1; $off >= 0; $off--) { $ret[] = implode('.', array_slice($domainParts, $off)); } return $ret; } getAllSubdomain('test.sub.domain.com')
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