$re = '/^\s*(\d+\..*(?:\n@.*)+)/m';
$str = '1. @aut1.or
@Autowired
2. @Override
@param
@SuppressWarnings
3. @aut1.or
@Autowired';
preg_match_all($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