问优化PHP cURL和分解

EN

function between($src, $start, $end){
    $txt = explode($start, $src);
    $txt2 = explode($end, $txt[1]);
    return trim($txt2[0]);
}

$title = between($data, '<div class="score unvoted">','</div>');

function get_data($url) {
  $ch = curl_init();
  $timeout = 5;
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
  $data = curl_exec($ch);
  curl_close($ch);
  return $data;
}