用php+mysql+ajax实现淘宝客服或阿里旺旺聊天功能 之 前台页面

<!--中间内容-->
	<div id="zhongjian">
	  	<div id="kuangjia" style="height: 550px;width: 620px; margin: 0px auto;border: 1px solid gainsboro;background-color: white;">
			<div id="neirong" style="height: 400px;width: 600px;">
				<div style="height: 100px;width: 620px;background-image: url(../img/bj4.jpg);">
		//取店主用户名，显示店主的头像和姓名
　　　　　　　　<?php
        	$uid = $_SESSION["uid"];       	
        	$sql = "select * from users where uid=‘zhangsan‘";
        	$arr = $db->query($sql);
        	foreach($arr as $v)
        	{        		
        	echo "
        	<div style=‘height:100px;float:left;width:100px;float:left;‘>
        		<div style=‘border:2px solid grey;height:84px;width:84px;margin:7px auto; border-radius:10px;overflow:hidden‘>
        		<img src=‘{$v[6]}‘ height=‘80px‘ width=‘80px‘/>
        		</div>
        		</div>
        		<div style=‘height:100px;width:500px;float:left;‘>
        		<div style=‘height:50px;width:500px;text-align:left;line-height:50px‘>
        			亲爱的店主
        		</div>       		
        			<div style=‘height:50px;width:500px;text-align:left;‘>个性签名：
        			<input type=‘text‘ placeholder=‘不读书怎么对得起今天!‘ style=‘width:280px‘>       			     			
        		</div>
        		</div>
        		";	
        	}       	
        	?>
        	</div>
        	<div style="height: 300px;width: 620px;overflow: auto;overflow-x:hidden ;">
                                 //获取session里存取的uid;
        		<?php
					$uid = $_SESSION["uid"];					
					$sql3 = "select * from users where uid=‘{$uid}‘";
        	                        $arr3 = $db->query($sql3);
　　　　　　　　　　　　　　　　　　　　//从对话表里读取店主张三和李四所有的对话信息，并按对话时间顺序排序	
					$sql2="select * from duihua where uid=‘{$uid}‘ or jsid=‘{$uid}‘ order by dhtime";					
					$arr2= $db->query($sql2);
					foreach($arr2 as $n)
					{
                                //如果是店主，则信息要显示在左侧
					if($n[2]==‘zhangsan‘)
					{
					echo "<div style=‘height:100px;width:600px;‘>
					<div style=‘height:100px;width:250px;float:left‘>
						<div style=‘height:20px;width:250px;font-size:13px;padding-left:20px‘>
								{$n[6]}</div>
						<div style=‘height:80px;width:50px;float:left‘>
							<div style=‘height:50px;width:50px;margin:0px auto; border-radius:90px;overflow:hidden;‘>
								<img src=‘{$v[6]}‘ height=‘50px‘ width=‘50px‘/>
							</div>
						</div>
						<div style=‘min-height:40px;width:200px;float:left;background-color:cornflowerblue; border-bottom-right-radius: 10px;border-top-right-radius: 10px;border-top-left-radius: 40px;border-bottom-left-radius: 40px;‘>
							<p style=‘padding-left:20px; line-height:40px‘>
								{$n[4]}</p>								
						</div>					
					</div></div>";
					}	
//如果是李四，则显示在右侧				
				  if($n[2]==$uid)
					{												
					echo "<div style=‘height:100px;width:600px;margin-right:20px‘>
					<div style=‘height:100px;width:250px; float:right‘>
						<div style=‘height:20px;width:250px;font-size:13px;padding-right:20px‘>
								{$n[6]}</div>
						<div style=‘height:80px;width:50px;float:right‘>
							<div style=‘height:50px;width:50px;margin:0px auto; border-radius:90px;overflow:hidden;‘>
								<img src=‘{$arr3[0][6]}‘ height=‘50px‘ width=‘50px‘/>
							</div>
						</div>
						<div style=‘min-height:40px;width:200px;float:right;background-color:pink; border-bottom-left-radius: 10px;border-top-left-radius: 10px;border-top-right-radius: 40px;border-bottom-right-radius: 40px;‘>
							<p style=‘padding-left:20px; line-height:40px‘>
								{$n[4]}</p>								
						</div>					
					</div></div>";	
					}										
					}		
					?>      		
        	</div>		
			</div> <!--id="neirong"-->

		<form role="form">
		  <div class="form-group">
		    <textarea class="form-control" rows="3" id="words"></textarea>  //输入发送内容
		  </div>
		</form>
		<div id="fs" style="height: 50px; width: 600px;text-align: right; padding-right: 50px;">
		
		<button type="button" class="btn btn-success fasong">发送</button>     //点击按钮发送
		</div>
		</div>	  		
		</div> <!--id=zhongjian-->	

<script>
	$(".tc").click(function(){
		$("#kuangjia").show();		
	})
		
		$(".fasong").click(function(){
		var nr=$("#words").val();
		$.ajax({
			url:"qt-speak-cl.php",
			data:{words:nr},
			type:"POST",
			dataType:"TEXT",
			success: function(data){
				if(data==1)
				{
				window.location.href="qt-dh.php";	
				}
				else{
					alert("发送内容不能为空！");
				}
				
				}
		})
	})	
		
		$("#dh").click(function(){
		$.ajax({
			url:"qt-yidu-cl.php",
			dataType:"TEXT",
			success: function(data){
//				alert(data);					
				window.location.href="qt-dh.php";				
			}			
		})
	})
	
</script>

<?php
session_start();
require "DBDA.class.php";

$db = new DBDA();  
$uid = $_SESSION["uid"];

$words =$_POST["words"];
$chtime=date("Y-m-d H:i:s",time());

$jieshou = "zhangsan";
if(!empty($words))
{
$sql="insert into duihua values (‘‘,‘{$jieshou}‘,‘{$uid}‘,‘‘,‘{$words}‘,0,‘{$chtime}‘)";

echo $db->query($sql,0);

}
else
{   
	echo "发送内容不能为空！";
}
?>