$re = '/^([A-Z]+-\d+)(\s\([A-Z]+-\d+\))?(:\s)(([a-zA-Z0-9&, ])+)/m';
$str = 'JIRA-123: Please Commit & Message, 123
JIRA-123 (EPIC-222): Still working';
preg_match_all($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