效果图：

代码如下:

function krc2lrc($krc_content, $glue = "n") {
  $enKey = array(64, 71, 97, 119, 94, 50, 116, 71, 81, 54, 49, 45, 206, 210, 110, 105);
  $krc_content = substr($krc_content, 4);
  $len = strlen($krc_content);
  $krc_compress = '';

  for ($k = 0; $k < $len; $k++) {
    $krc_compress .= chr(ord($krc_content[$k]) ^ $enKey[$k % 16]);
  }

  $krc_text = gzuncompress($krc_compress);
  return $krc_text;

  preg_match_all("/[(ar|ti|offset):(.+)]/", $krc_text, $matches);
  $lrc_text = implode($glue, $matches[0]) . $glue;
  preg_match_all("/[(d{0,8}),(d{0,8})](.+)/", $krc_text, $matches);
  unset($krc_text, $krc_compress, $krc_content, $enKey);
  if (!empty($matches[1])) {
    foreach($matches[1] as $k => $v) {
      list($seconds, $millis) = explode('.', $v / 1000);
      $lrc_time =
          date('i:s', 1388534400 + $seconds) . '.' . substr($millis, 0, 2);
      $lrc_cont = preg_replace("/<d{1,8},d{1,8},d{1,8}>/", '', $matches[3][$k]);
      $lrc_text .= "[{$lrc_time}]{$lrc_cont}{$glue}";
    }
  }
  return $lrc_text;
}

简单的示例:

$content = file_get_contents("1.krc");
echo krc2lrc($content,'<br/>');