$re = '/\$Id\: (\S+?) ([vx.0-9a-f]+)\b (\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}Z \S+?) \$/';
$str = '# $Id: svnref.pm 22354 2022-03-12 17:55:30Z author $
# $Id: semver.pm 1.2.1 2022-03-12 17:55:30Z author $
# $Id: sewver.pm v1.2 2022-03-12 17:55:30Z author $
# $Id: sewver.pm v1.2 2022-03-12 17:55:30Z author $
# $Id: gitcommit.pm 42e2e5a 2022-03-12 17:55:30Z author $
';
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