ThinkPHP结合ajax、Mysql实现的客户端通信功能代码示例
这篇文章主要介绍了ThinkPHP结合ajax、Mysql实现的客户端通信功能,需要的朋友可以参考下
该实例通过ThinkPHP结合Ajax与mysql实现了客户端的通信功能，具体如下：
1、使用js的ajax局部刷新功能，每次刷新将数据库中读取出的新记录插入到页面的显示区域，代码如下：
window.onload =setInterval(showWords1000);//加载完成之后开始执行刷新功能
function showWords()//刷新时被调用函数，实现ajax请求
{
xmlHttp=GetXmlHttpObject();//从自定义的函数中获取请求对象。
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return;
}
var url="index.php?g=Ksks&m=Comments&a=refresh";//要请求的路径使用shuipfcms框架，所以g是分组，m是action控制器，a是模板
url=url+"&data_id="+$("#data_id").val();//接上，，data_id传的参数，用于查询数据库的id
url=url+"&lasttime="+$("i").last().siblings('input').val();//lasttime是页面显示数据的最后一个记录的时间戳，查找时根据大于这个时间戳的条件查找
xmlHttp.onreadystatechange=stateChanged;//响应状态改变时调用的函数
xmlHttp.open("GET",url,true);//使用get方法提交
xmlHttp.send();//上面传参之后，这句可要可不要
}
function stateChanged() //实现向页面插入数据功能
{
var str ="";
if(xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{
eval("var arrs="+xmlHttp.responseText);//获取由action响应输出的数据，因为数据室php数组格式，需用eval或json转化成js数组格式
var chdiv=$("#conversation_history");//通信聊天记录框
for(var j=0;j
");//定义页面当中记录框的html格式代码
var i=$(" "+arrs[j].times+"");//i标签i为thinkphp定义的直接将时间输出到input隐藏并且存储得到数据里面的聊天发送时间
var p=$("");
p.html(arrs[j].content);//聊天内容
p.append(i);
var h3value=arrs[j].name;//发送的作者
obj.find("h3").html(h3value+"：");
if(h3value=="主持人")
{obj.find("h3").addClass("presenter");}//主持人会特别显示
obj.find("td:last").append(p);
chdiv.append(obj);//追加到table里面
}
chdiv.parent().scrollTop(chdiv.parent()[0].scrollHeight+0);//滚动到底部
}
}
function GetXmlHttpObject()//定义ajax请求对象 { var xmlHttp=null; try { // Firefox, Opera 8.0+, Safari xmlHttp=new XMLHttpRequest(); } catch (e) { //Internet Explorer try { xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); } } return xmlHttp; }
2、action控制器，代码如下：
function refresh(){ $data_id = I('get.data_id');//获得嘉宾id $lasttime = I('get.lasttime'); //print_r(date("Y-m-d H:i:s",$lasttime)); if(!$data_id) $this->error("该访谈不存在！"); $data = M("ksks_words_memoir"); //print_r(date('Y-m-d H:i:s',$lasttime)); if(!$data) $this->error("初始化数据失败！"); //$words = $data->where(array('dataid' => $data_id))->order('time asc')->select(); //print_r($data->where(array('time' => $lasttime))->select()); $where['time'] = array('gt',$lasttime); $count = $data->where($where)->count(); //print_r(date("Y-m-d H:i:s",$lasttime)); $words = $data->where($where)->select(); $datas = array();//要返回的数组 $i = 0; foreach($words as $word) { $datas[$i]['name'] = $word['name']; $datas[$i]['content'] = $word['content']; $datas[$i]['times'] = date('Y-m-d H:i:s',$word['time']); $lasttime = $word['time']; $i = $i+1; } setCookie('lasttime',$lasttime); $datas = json_encode($datas); //$this->cache(); echo $datas; }
3、聊天页面，代码如下：
class="presenter">{$vo.name}：
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