$re = '/^https:\/\/www\.own3d\.tv\/en\/product\/[a-zA-Z0-9-\/]*-series-[a-zA-Z0-9-\/]*\/?$/m';
$str = 'select all english detail pages of overlay packages
starting with: https://www.own3d.tv/en/product/
containing between various characters: -series-
-------------------------------------------------------
https://www.own3d.tv/en/product/arcadepro-series-package/
https://www.own3d.tv/en/product/dj-series-package/
https://www.own3d.tv/en/
https://www.own3d.tv/en/product/8-pack-animated-reaper-twitch-emotes-sales-bundle/
https://www.own3d.tv/en/product/twitch-channel-points-ghost/
https://www.own3d.tv/de/produkt/nexus-series-package/
https://www.own3d.tv/pt-br/produto/nexus-series-package/';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php