聊天内容显示页面

<?php
  /**************************************/
  /*  文件名：chatboard.php  */
  /*  功能：聊天内容显示页面  */
  /**************************************/

  include "config.inc.php";  //包含配置信息
  include "header.inc.php";  //包含公用头部页面
?>

<script language="JavaScript">
  //刷新时间间隔（秒）
  var refreshinterval=<?php echo $refreshrate; ?>

  //是否在状态栏上显示用户状态 yes/no
  var displaycountdown="yes"

  //系统页面刷新
  var starttime
  var nowtime
  var reloadseconds=0
  var secondssinceloaded=0

  function starttime() {
 starttime=new Date()
 starttime=starttime.getTime()
    countdown()
  }

  function countdown() {
 nowtime= new Date()
 nowtime=nowtime.getTime()
 secondssinceloaded=(nowtime-starttime)/1000
 reloadseconds=Math.round(refreshinterval-secondssinceloaded)
 if (refreshinterval>=secondssinceloaded) {
        var timer=setTimeout("countdown()",1000)
  if (displaycountdown=="yes") {
   window.status="在 "+reloadseconds+ " 秒后刷新聊天记录"
  }
    }
    else {
        clearTimeout(timer)
  window.location.reload(true)
    }
  }
  window.onload=starttime
</script>

<?php
  //功能
  $action = isset($_GET['action']) ? $_GET['action'] : 'public';
  //用户名
  $username = $_SESSION['username'];
  //私聊用户名
  $to = isset($_GET['to']) ? $_GET['to'] : '';

  //从数据库获取聊天记录
  if($action == 'public')
  {
     //公共聊天内容
 $query = "SELECT id, time, username, message
  FROM chatter_chatboard
  WHERE 1=1
  ORDER BY time DESC LIMIT $chatrows";
  }
  else // if($action == ‘private’)
  {
 //私聊内容，有删除标记的不予读取
 $query = "SELECT id, time, fromname AS username, message
  FROM chatter_privboard
  WHERE (fromname='$username' AND toname='$to' AND delfrom=0)
      OR (fromname='$to' AND toname='$username' AND delto=0)
  ORDER BY time DESC LIMIT $chatrows";
  }

  //根据前面的SQL语句进行查询
  $result = @mysql_query ($query);
  $num_rows = mysql_num_rows ($result);
  if($num_rows == 0)
  {
    echo "当前没有聊天记录";
  }
  else
  {
 //获得聊天记录
 while( $row_chatboard = mysql_fetch_assoc($result) )
 {
  $array_chatboard[] = $row_chatboard;
 }

 //将反序排列数据，这样可以保证留言按照符合习惯的方式排列
 $array_chatboard = array_reverse ($array_chatboard);

 foreach($array_chatboard as $row_chatboard)
 {
  $id_board = $row_chatboard['id'];
  $username_board = $row_chatboard['username'];
  $message_board = $row_chatboard['message'];
  list($date_board, $time_board) = split(" ", $row_chatboard['time']);

  //处理特殊符号
  $message_board = htmlspecialchars($message_board);

  //如果允许表情符号，将自动转换
  if($use_smilies == true){
    $message_board = Smilies($message_board);
  }

  //处理行的颜色
  if($bgrow == 1){
   $bgcolor = "row_1";
   $bgrow = 0;
  }else{
   $bgcolor = "row_2";
   $bgrow = 1;
  }
?>
 <div class="<?php echo $bgcolor; ?>">
 <b style="color:red"><?php echo $username_board; ?></b>
  [<?php echo $time_board; ?>]
 <b>说：</b>
  <?php echo $message_board;?>
 </div>

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 }
  }//end foreach
?>