Website online people counting code implemented by php+memcache_PHP tutorial

I have nothing to do today and want to show the number of people online in the blog statistics. I found many examples on the Internet, either databases store data or files, and the code seems too complicated.

After I came back in the evening, I thought about it and saw that the Memcache service was installed on my server. Why not use Memcache to implement it.

Let’s talk about the implementation process:

Rendering:

Implementation code:

<&#63;php
$mc = new Memcache ();

// 连接memcache
$mc->connect ( "127.0.0.1", 11211 );

// 获取 在线用户 IP 和 在线时间数据
$online_members = $mc->get ( 'online_members' );

// 如果为空，初始化数据
if (! $online_members) {
 $online_members = array ();
}

// 获取用户ip
$ip = $_SERVER ["REMOTE_ADDR"];

// 为访问用户重新设置在线时间
$online_members [$ip] = time ();

foreach ($online_members as $k => $v) {
 // 如果三分钟后再未访问页面，刚视为过期
 if (time() - $v > 180) {
 unset($online_members[$k]);
 }
}

// 重新设置在线用户数据
$mc->set ( 'online_members', $online_members );

// 重新获取在线用户数据
$online_members = $mc->get ( 'online_members' );

// 输入统计在线人数
echo count($online_members);
&#63;>

http://www.bkjia.com/PHPjc/824648.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/824648.htmlTechArticleI have nothing to do today and want to show the number of people online in the blog statistics. I found many examples on the Internet, either databases store data or files, and the code seems too complicated. Back in the evening...