memcache ajax聊天核心

 

 

PHP代码

1. function chat_xzy()   
2.     {   
3.        if(!$totalnum=cache("chatMsgTotalNum")) $totalnum=cache("chatMsgTotalNum",1,3600*24*50);   
4.           
5.         if(isset($_GET[‘ajax’]) && $_GET[‘ajax’]==‘userlist’){   
6.             $json[‘data’]=getUserOL();   
7.             $json[‘olusernum’]=olNum();   
8.             echo json_encode($json);return true;   
9.         }elseif($_GET[‘ajax’]==‘sendmsg’){   
10.             $add[‘background’]=strip_tags($_POST[‘background’]);   
11.             $add[‘color’]=strip_tags($_POST[‘color’]);   
12.             $add[‘uid’]=$_SESSION[‘user’][‘uid’];   
13.             $add[‘nickname’]=$_SESSION[‘user’][‘name’];   
14.             $add[‘touid’]=$_POST[‘touid’];   
15.             if(!emptyempty($add[‘touid’])){   
16.                 $a_=db("admin");   
17.                 $touser=$a_->id($add[‘touid’])->find();   
18.                 $add[‘tonickname’]=$touser[‘name’];   
19.             }else{   
20.                 $add[‘tonickname’]=”;   
21.             }   
22.             $add[‘msg’]=strip_tags($_POST[‘msg’]);   
23.             $add[‘time’]=date(‘m-d H:i:s’);   
24.             $add[‘touid’]=$_POST[‘touid’];   
25.               
26.             $totalnum++;   
27.             cache("chatMsgTotalNum",$totalnum,3600*24*365);   
28.             cache(‘chatMsgList’.$totalnum,$add,3600*24);   
29.             $json[‘status’]=0;   
30.             echo json_encode($json);return true;   
31.         }elseif($_GET[‘ajax’]==‘showmsg’){   
32.             if(!$mylastid=cache("chatMsgTotalMy".$_SESSION[‘user’][‘uid’])) $mylastid=cache("chatMsgTotalMy".$_SESSION[‘user’][‘uid’],1,3600*24);   
33.             $n=$totalnum–$mylastid;   
34.             $list=array();   
35.             if($n>0){   
36.                 for($i=1;$i<=$n;$i++){   
37.                     $x=$mylastid+$i;   
38.                     $cTmp= cache(‘chatMsgList’.$x);   
39.                     if(emptyempty($cTmp[‘touid’]) || $cTmp[‘touid’]==$_SESSION[‘user’][‘uid’]) $list[]=$cTmp;   
40.                 }   
41.             }   
42.             cache("chatMsgTotalMy".$_SESSION[‘user’][‘uid’],$totalnum,3600*24);   
43.             if(!emptyempty($list)){   
44.                 $json[‘data’]=$list;   
45.                 $json[‘status’]=0;   
46.             }else{   
47.                 $json[‘status’]=1;   
48.             }   
49.             echo json_encode($json);return true;   
50.         }   
51.         $this->view();   
52.         $mylastid=cache("chatMsgTotalMy".$_SESSION[‘user’][‘uid’],1,3600*24);   
53.     }  

 

效果：