php自动更新版权信息显示的方法

function autoUpdatingCopyright($startYear){
  // given start year (e.g. 2004)
  $startYear = intval($startYear);
  // current year (e.g. 2007)
  $year = intval(date('Y'));
  // is the current year greater than the
  // given start year?
  if ($year > $startYear)
    return $startYear .'-'. $year;
  else
    return $startYear;
}
//用法
print '© ' . autoUpdatingCopyright(2001) . ' jb51.';
/
Output:
(c) 2001-2012 jb51.
/