通过PHP+MYSQL实现网站在线人数统计

网站在线人数的程序代码，后台有MySQL(和

首先是创建MySQL(和

CREATE TABLE tablename (
field type(max_length) DEFAULT 'default_value' (NOT) NULL
}

可以使用的SQL语句。

CREATE TABLE useronline (
timestamp int(15) DEFAULT '0' NOT NULL,
ip varchar(40) NOT NULL,
file varchar(100) NOT NULL,
Prima(最完善的虚拟主机管理系统)RY KEY (timestamp),
KEY ip (ip),
KEY file (file)
);

下面我们开始使用

$server = "localhost"; //你的服务器
$db_user = "root"; //你的MySQL(和$db_pass = "password"; //你的MySQL(和$database = "users"; //表的名字

设置统计的时间(多少秒内在线人数)

$timeoutseconds = 300;

取当前时间。

$timestamp = time();

上面的完整代码：

$db_user = "root"; //your MySQL(和$db_pass = "password"; //your MySQL(和$database = "users"; //the db name
$timeoutseconds = 300;//timeoutseconds limit
//get the current time
$timestamp = time();
//calculate the lowest timestamp allowed
$timeout = $timestamp-$timeoutseconds;
?>

连接MySQL(和

MySQL(和

也允许使用变量形式。

MySQL(和

如果MySQL(和

MySQL(和

查询数据库的代码：

MySQL(和

我们只要有访客就要增加一条记录。

$insert = MySQL(和('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['

然后我们给出如果用户用错误信息的处理方式。

if(!($insert)) {
print "Useronline Insert Failed > ";
}

然后我们得实现当超过我们设置的时间我们就要删除该用户记录。

$delete = MySQL(和

同样给出删除记录出错的处理。

if(!($delete)) {
print "Useronline Delete Failed > ";
}

下面我们显示数据库中有多少个不同的IP

$result = MySQL(和

我们使用MySQL(和

$user = MySQL(和

最后我们要关闭数据库。

MySQL(和

显示在线的人数。

if($user == 1) {
print("1 user online\n");
} else {
print("$user users online\n");
}

最终把上面代码写成一个

$server = "localhost"; //normally localhost
$db_user = "root"; //your MySQL(和$db_pass = "password"; //your MySQL(和$database = "users";
$timeoutseconds = 300; //it will delete all people which haven't refreshed(so probbably are
// offline or inactive) in $timieoutseconds time (so it actually checks the people that are active in the last
// $timeoutseconds seconds)
//this is where $timestamp = time();
//counts the timeout, all people which have been seen last online in earlier than this timestamp, will get removed
$timeout = $timestamp-$timeoutseconds;
//connect to database
MySQL(和//add the timestamp from the user to the online list
$insert = MySQL(和('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['if(!($insert)) {
print "Useronline Insert Failed > ";
}
//delete the peoples which haven't been online/active in the last $timeoutseconds seconds.
$delete = MySQL(和if(!($delete)) {
print "Useronline Delete Failed > ";
}
//select the amount of people online, all uniques, which are online on THIS page
$result = MySQL(和if(!($result)) {
print "Useronline Select Error > ";
}
//Count the number of rows = the number of people online
$user = MySQL(和//spit out the results
MySQL(和if($user == 1) {
print("1 user online\n");
} else {
print("$user users online\n");
}
?>

hhllf61

通过PHP+MYSQL实现 网站在线人数统计

通过PHP+MYSQL实现网站在线人数统计