$re = '/.*Eventname 2.*\n/';
$str = '<select id="filter_event_id" name="filter_event_id" class="inputbox chzn-done" onchange="submit();" style="display: none;">
<option value="0">Select Event</option>
<option value="113">Eventname (RB113) (02-05-2015)</option>
<option value="104">Eventname 2 (T104) (09-05-2015)</option>
<option value="109">Eventname 3 (M109) (15-05-2015)</option>
<option value="99" selected="selected">Eventname 4 (M99) (24-04-2015)</option>
</select>';
preg_match_all($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