3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?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; } $t = getAllSubdomain('test.sub.domain.com'); var_export($t); $queryPart = "('" . implode("','", $t) . "')"; var_export($queryPart);
Output for 5.4.44
array ( 0 => 'com', 1 => 'domain.com', 2 => 'sub.domain.com', 3 => 'test.sub.domain.com', )'(\'com\',\'domain.com\',\'sub.domain.com\',\'test.sub.domain.com\')'