$re = '/\<data\>\s*(?<data>[^<]+)/m';
$str = '<ID> 100034566 </ID> <data> This consists of DB data </data> <date> the date is 04-03-2019 </data>..........etc';
preg_match_all($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