PHP ajax 统计当前在线用户数程序代码
我们要统计在一段时间内访问站点的人数,有多种解决方案,你可以使用cookie,session结合文本或者数据库来记录用户访问数。本文将使用PHP,结合Mysql以及jQuery,展示一个统计在线人数以及访客地区分布的示例。
通常,当访客访问网站时,页面记录用户的cookie信息,当cookie过期即认为用户不在线。本文中我们使用PHP记录访客IP,并在客户端记录cookie及过期时间,同时通过新浪IP地址接口,获取访客的地理位置(本例只记录省份),一并写入mysql表中,即可统计一段时间内的访客总数,也可以查看访客的地区分布。
HTML
我们在页面上放置一个显示当前在线人数的div#total以及一个用于展示访客地区分布的列表#onlinelist,默认我们在列表中放置一张与加载动画图片,后面我们用jQuery控制当鼠标滑向时展示详细列表。
代码如下 | 复制代码 |
当前在线:
|
CSS
我们用CSS来渲染显示效果,为了就是不让我们的示例很难看,下面的代码中,我们使用了CSS3,时代在进步啊,所以建议使用现代浏览器预览效果。
.
代码如下 | 复制代码 |
demo{width:150px; margin:20px auto; font-size:14px} #total{padding:6px 10px; background:#090 url(http://pic1.phprm.com/2013/05/02/arr.jpg) no-repeat right top; color:#fff; cursor:pointer; -moz-border-radius:5px; -webkit-border-radius:5px; border-radius:5px; -moz-box-shadow:0 0 3px #ccc; -webkit-box-shadow:0 0 3px #ccc;box-shadow:0 0 3px #ccc;} #onlinelist{background:#f7f7f7; border:1px solid #d3d3d3; display:none; -moz-border-radius:5px; -webkit-border-radius:5px; border-radius:5px; -moz-box-shadow:0 0 3px #ccc; -webkit-box-shadow:0 0 3px #ccc;box-shadow:0 0 3px #ccc;} #onlinelist li{height:20px; line-height:20px;padding:4px 6px;border-bottom:1px dotted #d9d9d9} #onlinelist li span{float:right} #onlinelist li:hover{background:#fff} |
Mysql
我们要准备一张数据表online,用来记录访客IP、地区及访问时间。整个示例统计过程都依赖这张表,其结构如下:
代码如下 | 复制代码 |
CREATE TABLE IF NOT EXISTS `online` (
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PHP
online.php用来记录访客信息,包括IP地址和地区。首先检测数据表中是否有访客IP记录,如果有,则只更新访问时间,否则,获取用户省份区域,并将用户IP即省份区域插入到表中。在此,可以判断是否存在访客的cookie记录,如果不存在则向新浪IP地址库请求获取访客的区域信息,并设置cookie值和过期时间。最后,我们删除表中已经过期的记录,统计总记录数并输出,详细请看代码注释。
代码如下 | 复制代码 |
include_once('connect.php'); //连接数据库
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关于新浪IP地址库的调用,您也可以参阅helloweba.com文章根据IP定位用户所在城市信息的介绍。
函数get_client_ip()用来获取用户真实IP。
代码如下 | 复制代码 |
function get_client_ip() {
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geo.php用来统计各省份(区域)访客人数分布。通过查询数据库,并按省份分组排序即可,注意我们将最终的数据集以JSON的形式输出,便于前端ajax交互。
代码如下 | 复制代码 |
include_once('connect.php');//连接数据库
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jQuery
前端页面需要做的是,页面加载时展示访客总数,即使用ajax请求online.php即可。然后当鼠标滑向统计箭头时,通过ajax请求geo.php获取各区域省份的在线人数,并以下拉的方式展现效果。
代码如下 | 复制代码 |
$(function(){ }); $("#onlinelist").html(str); }); },function(){ $("#onlinelist").slideUp("fast"); }); }); |
完整实例
代码如下 | 复制代码 |
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