PHP+mysql+ajax轻量级聊天室实例(兼容Chrome和IE)
发布:smiling 来源: PHP粉丝网 添加日期:2015-04-15 10:34:49 浏览: 评论:0
ajax聊天室就是定时不定的刷新框架页面了,下面来给各位整理了一个PHP+mysql+ajax轻量级聊天室实例(兼容Chrome和IE)的例子,希望对大家有帮助.
做了一个QQ聊天交友网站,想加个聊天的功能,于是做完用PHP做了简单又强大的聊天室.
1.创建mysql数据库表:create table chat( id bigint AUTO_INCREMENT,username varchar(20),chatdate datetime,msg varchar(500),primary key(id));
2.编写建议连接数据库函数:dbconnect.php
- <?php
- function db_connect()
- {
- date_default_timezone_set("Asia/Shanghai");
- $link = mysql_connect("xxx.xxx.xxx.xxx", "databasename", "password")
- or die('无法连接: ' . mysql_error());
- mysql_select_db("databasename") or die('没有你找到指定数据库');
- return true;
- }
- function quote($strText)
- {
- $Mstr = addslashes($strText);
- return "'" . $Mstr . "'";
- }
- function isdate($d)
- {
- $ret = true;
- try
- {
- $x = date("d",$d);
- }
- catch (Exception $e)
- {
- $ret = false;
- }
- echo $x;
- return $ret;
- }
- ?>
3.编写ajax发送和接收函数:ajax发送函数chat_send_ajax.php
- <?php
- require_once('dbconnect.php');
- db_connect(); //开源软件:phpfensi.com
- $msg = iconv("UTF-8","GB2312",$_GET["msg"]);
- $dt = date("Y-m-d H:i:s");
- $user = iconv("UTF-8","GB2312",$_GET["name"]);
- $sql="INSERT INTO chat(USERNAME,CHATDATE,MSG) " .
- "values(" . quote($user) . "," . quote($dt) . "," . quote($msg) . ");";
- echo $sql;
- $result = mysql_query($sql);
- if(!$result)
- {
- throw new Exception('Query failed: ' . mysql_error());
- exit();
- }
- ?>
ajax接收函数chat_recv_ajax.php:
- <?php
- header("Content-Type:text/html;charset=gb2312");
- header("Expires: Thu, 01 Jan 1970 00:00:01 GMT");
- header("Cache-Control: no-cache, must-revalidate");
- header("Pragma: no-cache");
- require_once('dbconnect.php');
- db_connect();
- $sql = "SELECT *, date_format(chatdate,'%Y年%m月%d日 %r') as cdt from chat order by ID desc limit 200";
- $sql = "SELECT * FROM (" . $sql . ") as ch order by ID";
- $result = mysql_query($sql) or die('Query failed: ' . mysql_error());
- // Update Row Information
- $msg="<table border='0' style='font-size: 10pt; color: white; font-family: verdana, arial;'>";
- while ($line = mysql_fetch_array($result, MYSQL_ASSOC))
- {
- $msg = $msg . "<tr><td>" . $line["cdt"] . " </td>" .
- "<td>" . $line["username"] . ": </td>" .
- "<td>" . $line["msg"] . "</td></tr>";
- }
- $msg=$msg . "</table>";
- echo $msg;
- ?>
4.聊天室页面:chat.html
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml" >
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
- <title>聊天页面</title>
- <script type="text/javascript">
- var t = setInterval(function(){get_chat_msg()},5000);
- //
- // General Ajax Call
- //
- var oxmlHttp;
- var oxmlHttpSend;
- function get_chat_msg()
- {
- if(typeof XMLHttpRequest != "undefined")
- {
- oxmlHttp = new XMLHttpRequest();
- }
- else if (window.ActiveXObject)
- {
- oxmlHttp = new ActiveXObject("Microsoft.XMLHttp");
- }
- if(oxmlHttp == null)
- {
- alert("浏览器不支持XML Http Request!");
- return;
- }
- oxmlHttp.onreadystatechange = get_chat_msg_result;
- oxmlHttp.open("GET",encodeURI("chat_recv_ajax.php"),true);
- oxmlHttp.send(null);
- }
- function get_chat_msg_result()
- {
- if(oxmlHttp.readyState==4 || oxmlHttp.readyState=="complete")
- {
- if (document.getElementById("DIV_CHAT") != null)
- {
- document.getElementById("DIV_CHAT").innerHTML = oxmlHttp.responseText;
- oxmlHttp = null;
- }
- var scrollDiv = document.getElementById("DIV_CHAT");
- scrollDivscrollDiv.scrollTop = scrollDiv.scrollHeight;
- }
- }
- function set_chat_msg()
- {
- if(typeof XMLHttpRequest != "undefined")
- {
- oxmlHttpSend = new XMLHttpRequest();
- }
- else if (window.ActiveXObject)
- {
- oxmlHttpSend = new ActiveXObject("Microsoft.XMLHttp");
- }
- if(oxmlHttpSend == null)
- {
- alert("浏览器不支持XML Http Request!");
- return;
- }
- var url = "chat_send_ajax.php";
- var strname="noname";
- var strmsg="";
- if (document.getElementById("txtname") != null)
- {
- strname = document.getElementById("txtname").value;
- document.getElementById("txtname").readOnly=true;
- }
- if (document.getElementById("txtmsg") != null)
- {
- strmsg = document.getElementById("txtmsg").value;
- document.getElementById("txtmsg").value = "";
- }
- url += "?name=" + strname + "&msg=" + strmsg;
- oxmlHttpSend.open("GET",encodeURI(url),true);
- oxmlHttpSend.send(null);
- }
- function clickBtn(e)
- {
- if(window.event.keyCode==13)
- {
- var id=e.id;
- switch(id)
- {
- case "txtmsg":
- document.getElementById("Submit2").click();
- window.event.returnValue=false;
- break;
- }
- }
- }
- function fRandomBy(under, over){
- switch(arguments.length){
- case 1: return parseInt(Math.random()*under+1);
- case 2: return parseInt(Math.random()*(over-under+1) + under);
- default: return 0;
- }
- }
- function SetTxtName(){
- var i=fRandomBy(10);
- if(i==0)document.getElementById('txtname').value='无敌战神';
- if(i==1)document.getElementById('txtname').value='令狐冲';
- if(i==2)document.getElementById('txtname').value='西门吹雪';
- if(i==3)document.getElementById('txtname').value='超级玛丽';
- if(i==4)document.getElementById('txtname').value='奥巴马';
- if(i==5)document.getElementById('txtname').value='恐怖分子';
- if(i==6)document.getElementById('txtname').value='聊斋奇女子';
- if(i==7)document.getElementById('txtname').value='天朝?潘?;
- if(i==8)document.getElementById('txtname').value='中500万了';
- if(i==9)document.getElementById('txtname').value='神级奇葩';
- if(i==10)document.getElementById('txtname').value='爱你不是两三天';
- }
- </script>
- </head>
- <body onload="SetTxtName();">
- <div style="border-right: black thin solid; border-top: black thin solid;
- border-left: black thin solid; border-bottom: black thin solid;
- background:#fff url('http://www.ihaonet.com/chat/blue.jpg') repeat-x left top;
- height: 450px;width: 500px; ">
- <table style="width:100%; height:100%">
- <tr>
- <td colspan="2" style="font-weight: bold; font-size: 16pt; color: white; font-family: verdana, arial;
- text-align: center">
- 聊天窗口--全球最大QQ聊天交友网站</td>
- </tr>
- <tr>
- <td colspan="2" style="font-weight: bold; font-size: 16pt; color: white; font-family: verdana, arial;
- text-align: left">
- <table style="font-size: 12pt; color: white; font-family: Verdana, Arial;border: white thin solid; ">
- <tr>
- <td style="width: 100px">
- 名字:</td>
- <td style="width: 100px"><input id="txtname" style="width: 150px" type="text" name="name" maxlength="15" value="匿名" /></td>
- </tr>
- </table>
- </td>
- </tr>
- <tr>
- <td style="vertical-align: middle;" valign="middle" colspan="2">
- <div style="width: 480px; height: 300px; border-right: white thin solid; border-top: white thin solid; font-size: 10pt; border-left: white thin solid; border-bottom: white thin solid; font-family: verdana, arial; overflow:scroll; text-align: left;" id="DIV_CHAT">
- </div>
- </td>
- </tr>
- <tr>
- <td style="width: 310px">
- <input id="txtmsg" style="width: 350px" type="text" name="msg" onkeydown="return clickBtn(this)"/></td>
- <td style="width: 85px">
- <input id="Submit2" style="font-family: verdana, arial" type="button" value="发送" onclick="set_chat_msg()"/></td>
- </tr>
- <tr>
- <td colspan="1" style="font-family: verdana, arial; text-align: center; width: 350px;">
- </td>
- <td colspan="1" style="width: 85px; font-family: verdana, arial; text-align: center">
- </td>
- </tr>
- </table>
- </div>
- </body>
- </html>
Tags: PHP聊天室 mysql聊天室
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