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采用行写方式的聊天程序(之四)-PHP实例

(接前面部分) <body leftmargin="0" topmargin="0"> <div align=center> <br> <form method="post" action="lt3.php" name="fyq"  target="bforlt3" onsubmit='return(checksays());'> <input type=hidden name='oldsays' value=''> 姓名: <input type="text" name="username" maxlength="10" > 说:<input type="text" name="saystemp" maxlength="200" size="50" > <input type="submit" name="send" value="发言" > <br> <input type=checkbox name='towhoway' value='1' onclick="document.forms[0].saystemp.focus();"> <a href='#' onMouSEOver="window.status='选中本'; return true"               onMouseOut="window.status='';        return true" onClick="document.forms[0].towhoway.checked=!(document.forms[0].towhoway.checked);   document.forms[0].saystemp.focus();" title="悄悄话儿悄悄说"><font color=black>私聊</font></a> <select name='towho' style='font-size:12px' onClick=dj()> <option value='大家' selected>大家</select> 动作:<select name='addsign' onchange="rc(this.value);" style='font-size:12px'>      <option value="0" selected>----</option>      <option value="//热情地向在场的所有人打招呼。">招呼</option>     </select> <input type=hidden name="fontsize" size=3> <input type=hidden name="lineheight" size=3> <input type=hidden name="oldtitleline" value="0"> <input onclick="javascript:cls();" type="button" value="清屏" style="background-color:FFFFFF;color:000000;border: 1 double"> <input accesskey="a" type="checkbox" name="as" checked onclick='parent.f1.scrollit();document.fyq.saystemp.focus();'> <a href="#" onclick="Javascript:document.fyq.as.checked=!document.fyq.as.checked; parent.f1.scrollit(); document.fyq.saystemp.focus();">滚屏</a>   </form> <script> parent.wu(); write(); document.fyq.saystemp.focus(); </script> </body> </html> lt3.php 处理发言信息 <? session_start(); include("g_fun.php"); f_connectdb(); $query  = "select max(lt_id) as rmaxid from lt_t_content"; $res = MySQL_query($query, $dbh);   $row = mysql_fetch_array($res); $maxid =  $row["rmaxid"]; if (empty($maxid)) { $maxid = 0; } $maxid = $maxid + 1; //增加聊天信息 $query  = "insert into lt_t_content(lt_id,lt_speaker,lt_speaked,lt_secrecy,lt_content,lt_time,lt_face)"; $query .= " values(".$maxid.",'".$username."','".$towho."','1','".$oldsays."',now(),'1')"; $res = mysql_query($query, $dbh);   //修改最后聊天时间,判断用户是否存在,防止超时被删除 $query  = "select count(*) as rcount from lt_t_online where lt_username = '".$username."'"; $res = mysql_query($query, $dbh);   $row = mysql_fetch_array($res); $lcount =  $row["rcount"]; if ($lcount == 0) {    $query  = "insert into lt_t_online(lt_username,lt_lasttime) values(";    $query .= "'".$username."',now())";    $res = mysql_query($query, $dbh);   } $query  = "update lt_t_online set lt_lasttime = now(),lt_state = '0' where lt_username = '".$username."'"; $res = mysql_query($query, $dbh);   //显示聊天记录 $query  = "select lt_id,lt_speaker,lt_face,lt_speaked,lt_time,lt_content from lt_t_content"; $query .= "  where lt_id > ".$chat_hh. " order by lt_time desc"; $res = mysql_query($query, $dbh);   $chat_hh = $maxid; $tempi = $maxid; while ($row = mysql_fetch_array($res)) {      ?>    <script Language=JavaScript1.1>    var zt="<? echo '0'; ?>";    var un="<?echo $row['lt_speaker'];?>";    var tw="<?echo $row['lt_speaked'];?>";    var sa="<?echo $row['lt_content'];?>";    parent.f2.nw(zt,un,tw,sa);    //向显示处写入最新的数据.    </script>    <?    $tempi=$row['lt_id']; } if ($tempi > $chat_hh) {    $chat_hh = $tempi; } ?>   【本文版权归作者与奥索网共同拥有,如需转载,请注明作者及出处】        

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