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php如何统计访问次数?

Jun 01, 2016 pm 12:06 PM
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php如何统计访问次数?

php如何统计访问次数?

php中可以利用cookie实现访问次数统计

<?php
global $count;
$count=1;
if(!isset($_COOKIE["visittime"])){ setcookie("visittime",date("y-m-d H:i:s"));
setcookie("visitcount",1); echo "欢迎你第一次访问网站!";
}
else{
setcookie("visittime",date("y-m-d,H:i:s"),time()+60); $count=$_COOKIE[&#39;visitcount&#39;]+1;
setcookie("visitcount",$count); echo "你上次访问网站的时间为:".$_COOKIE[&#39;visittime&#39;];
echo "<br>";
}
echo "你第".$_COOKIE[&#39;visitcount&#39;]."访问网站的时间为:".date("y-m-d H:i:s");
?>

什么是cookie?

Cookie是存储在用户计算机上的小文件。它们用于保存特定于特定客户端和网站的适量数据,可以通过Web服务器或客户端计算机访问。

Cookie中基本上是包含都是有关我们浏览网站信息(设置、记录等等)的小文档。例如,当我们选择要在其中查看网站的语言时,网站会将信息保存在计算机上名为cookie的文档中,下次再访问该网站时,它将能够阅读之前保存的cookie文件(里面包含着设置好的网站的语言)。这样,我们就可以首选语言查看网站,而无需再次选择语言。

Cookie包含的信息可以是任何类型的,例如访问网站的时间,添加到购物篮中的项目,在网站上点击的所有链接等。

如果在特定网站中创建cookie,并且您稍后访问另一个网站,则后者将无法从第一个网站读取内容,换句话说,只有保存信息的同一网站才能访问。

Cookies如何工作?

Cookie从服务器传递到客户端,然后再返回到请求和响应的HTTP头中。服务器可以使用Cookie来指示会话ID,购物车内容,登录凭据,用户首选项等。下面我们来了解一下Cookies的工作原理。

1.jpg

从上图可以看出,当用户第一次请求页面时,服务器连同资源一起发送cookie对象以存储在客户机上。此对象可能包含请求的详细信息。现在稍后,如果用户再次请求相同的资源,则它与所存储的cookie一起发送可以由服务器使用的请求,以进一步增强用户的体验。

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