八星瓢虫留言本特点：采用PHP+Access数据库实现

								//获取正确时间
				function gettime()
				{
				  $tmphour=date("g")+8;
				  $tmpnow=date("Y-n-j")." ".$tmphour.date(":i:s");
				  return $tmpnow;
				}
				//获取真实IP
				function getip()
				{
				  $ip = getenv("HTTP_X_FORWARDED_FOR");
				  if (($ip = "") || ($ip = "unknown")) $ip=getenv("REMOTE_ADDR");
				  return $ip; 
				} 
				//获取操作系统类型
				function getos() 
				{ 
				  $agent = $_ENV["HTTP_USER_AGENT"];
				  if (eregi('win', $agent) && strpos($agent, '95')){ 
				    $os = 'Windows 95'; 
				  } 
				  else if (eregi('win 9x', $agent) && strpos($agent, '4.90')){ 
				    $os = 'Windows ME'; 
				  } 
				  else if (eregi('win', $agent) && ereg('98', $agent)){ 
				    $os = 'Windows 98'; 
				  } 
				  else if (eregi('win', $agent) && eregi('nt 5.1', $agent)){ 
				    $os = 'Windows XP'; 
				  } 
				  else if (eregi('win', $agent) && eregi('nt 5', $agent)){ 
				    $os = 'Windows 2000'; 
				  } 
				  else if (eregi('win', $agent) && eregi('nt', $agent)){ 
				    $os = 'Windows NT'; 
				  } 
				  else if (eregi('win', $agent) && ereg('32', $agent)){ 
				    $os = 'Windows 32'; 
				  } 
				  else if (eregi('linux', $agent)){ 
				    $os = 'Linux'; 
				  } 
				  else if (eregi('unix', $agent)){ 
				    $os = 'Unix'; 
				  } 
				  else if (eregi('sun', $agent) && eregi('os', $agent)){ 
				    $os = 'SunOS'; 
				  } 
				  else if (eregi('ibm', $agent) && eregi('os', $agent)){ 
				    $os = 'IBM OS/2'; 
				  } 
				  else if (eregi('Mac', $agent) && eregi('PC', $agent)){ 
				    $os = 'Macintosh'; 
				  } 
				  else if (eregi('PowerPC', $agent)){ 
				    $os = 'PowerPC'; 
				  } 
				  else if (eregi('AIX', $agent)){ 
				    $os = 'AIX'; 
				  } 
				  else if (eregi('HPUX', $agent)){ 
				    $os = 'HPUX'; 
				  } 
				  else if (eregi('NetBSD', $agent)){ 
				    $os = 'NetBSD'; 
				  } 
				  else if (eregi('BSD', $agent)){ 
				    $os = 'BSD'; 
				  } 
				  else if (ereg('OSF1', $agent)){ 
				    $os = 'OSF1'; 
				  } 
				  else if (ereg('IRIX', $agent)){ 
				    $os = 'IRIX'; 
				  } 
				  else if (eregi('FreeBSD', $agent)){ 
				    $os = 'FreeBSD'; 
				  } 
				  else if (eregi('teleport', $agent)){ 
				    $os = 'teleport'; 
				  } 
				  else if (eregi('flashget', $agent)){ 
				    $os = 'flashget'; 
				  } 
				  else if (eregi('webzip', $agent)){ 
				    $os = 'webzip'; 
				  } 
				  else if (eregi('offline', $agent)){ 
				    $os = 'offline'; 
				  } 
				  else { 
				    $os = 'Unknown'; 
				  } 
				  return $os; 
				}
				//提示信息并导向
				function alert($msg,$url)
				{
				  if (is_int($url)==true)
				  {
				    if ($url==0)
				    {
				      echo "alert(\"$msg\");window.close();";
				    }
				    else
				    {
				      echo "alert(\"$msg\");history.go(-$url);";
				    }
				  }
				  else
				  {
				    echo "alert(\"$msg\");window.location=\"$url\";";
				  }
				  exit;
				}
				//检查是否合法参数
				function chkint($value)
				{
				  $value=intval($value);
				  if ($value				  {
				    echo "alert(\"参数错误！\");history.go(-1);";
				    exit;
				  }
				  return $value;
				}
				?>