$re = '/-CC\s*(.*?)\s+-/m';
$str = '20181223-FB-BOOST-AAAA-CC Auchy-Les-Mines - Père Noel
20161224-FB-BOOST-SSSS-CC LeMarine - XXX XXX
20161223-FB-BOOST-XXXX-CC Bonjour le monde - Blah blah';
preg_match_all($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