聊天室php&mysql(四)

  第四个页面 name="index.php"

  <?

  include "../signup/mysql.php";

  header("Expires: Sun, 28 Dec 1997 09:32:45 GMT");

  header("Cache-Control: no-cache, must-revalidate");

  header("Pragma: no-cache");

  header("Content-Type: text/html; charset=${Charset}");

  ?>

  <html>

  <head>

  <title>charmain</title>

  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">

  <meta http-equiv="Refresh" content="4; url=<? echo $PHP_SELF; ?>?userid=<?echo $userid?>">

  </head>

  <body bgcolor="#99CCFF" text="#000000">

  <?

  $max_row_length=30;

  $select="select row from user_message order by row DESC";

  $result=mysql_query($select)or die(" false fgfg");

  $rowlist=mysql_fetch_array($result)or die("false");

  $max_row=$rowlist["row"];

  if($max_row>$max_row_length){

  $delete_row=$max_row-$max_row_length+1;

  // echo $max_row."<br>".$delete_row;

  $select="select row from user_message where row<".$delete_row;

  $result=mysql_query($select)or die(" false");

  while($row=mysql_fetch_array($result))

  {

  $sql="delete from user_message where row <".$delete_row;

  mysql_query($sql)or die ("del false1");

  }

  $left=$delete_row;

  }

  else {$left=1;

  }

  for($i=$max_row; $i>=$left ;$i--)

  {

  $sql="SELECT message,userid,object,status,color,action1,time1 FROM user_message where row='$i'";

  $result=mysql_query($sql)or die(mysql_error());

  $row=mysql_fetch_array($result);

  $time1=$row["time1"];

  $usert1=$row["userid"];

  $objectt1=$row["object"];

  $sql="select id from chat_user_list where userid='$usert1'";

  $result=mysql_query($sql)or die(mysql_error());

  $rowt1=mysql_fetch_array($result);

  $usert5=$rowt1["id"];

  $sql="select id from chat_user_list where userid='$objectt1'";

  $result=mysql_query($sql)or die(mysql_error());

  if($rowt2=mysql_fetch_array($result))

  $bojectt5=$rowt2["id"];

  else $bojectt5="大家";

  if($row["userid"]!=$userid){

  $user1="<a href='".$PHP_SELF."?userid=$userid'  onClick=parent.bottom.user('".$usert5."')>".$usert5."</a>";

  }

  else $user1=$usert5;

  if($row["object"]!=$userid){

  $user2="<a href='".$PHP_SELF."?userid=$userid'  onClick=parent.bottom.user('".$bojectt5."')>".$bojectt5."</a>"; }

  else $user2=$bojectt5;

  $message2=$row["message"];

  $message3=htmlspecialchars($message2);

  $message1="<font size=3 color=".$row["color"]."><i>".$user1."</i> 对".$user2." <i>".$row["action1"].": </i>".$message3."</font>" ;

  if($row["status"]==1){

  if($row["object"]==$userid||$row["userid"]==$userid)

  echo "<font size=2 color=ff0000 >私聊</font>".$time1." ".$message1."<br>";

  else continue;

  }

  else {

  echo $time1." ".$message1."<br>";

  }

  }

  ?>

  </body>

  </html>