<?php $domains[] = 'www.wp.pl'; $domains[] = 'http://www.onet.pl/plp/costam'; $domains[] = 'onet.pl'; $domains[] = 'https://redtube.com/porn'; print_r(array_map(function ($domain) { preg_match('#(https?:\/\/)?(www\.)?([^\/]+)#', $domain, $matches); return $matches[3] ?? null; }, $domains));
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