$re = '/(.+?)(?:\.\[(\d{4}\-\d{4}\s?|\d{4}\-\s?|\d{4}\s?)?([^\]]*)\])?(?:\.(.+))?
/m';
$str = 'Azertyuiop £££.[2024].Mini-série
Azertyuiop - qsdfghjklm.[2021-2023 Netflix].Manga
';
preg_match_all($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