刚用PHP写了一个网站在线人数的程序，请大家进来指点下！(页 1) - 电脑软件 - 捌玖网络工作室 |网页制作|平面设计|建站交流|代码资料|建站教程|主机域名|asp、php、jsp代码|网站素材

lilcy88 发表于 2008-5-28 10:40

刚用PHP写了一个网站在线人数的程序，请大家进来指点下！

刚用PHP写了一个网站在线人数的程序，请大家进来指点下！
我是用PHP+MYSQL来写的，原理：网站在线人数的程序代码+后台有MYSQL数据库支持，可以直接统计出网站当前的在线人数。
首先我创建MYSQL数据库表。-{ol j%b*N7`*m/l
CREATE TABLE tablename (
field type(max_length) DEFAULT 'default_value' (NOT) NULL+G!h)Ly%|(P
}可以使用的SQL语句。
CREATE TABLE useronline (z(x sk-P&[
timestamp int(15) DEFAULT '0' NOT NULL,7zcVK Sv K
ip varchar(40) NOT NULL,%x@f jt@!@a
file varchar(100) NOT NULL,GLv)b5K'{Iix
PRIMARY KEY (timestamp),*QNp-~!|9N1q&|'x6X
KEY ip (ip),qk7m.qjoi
KEY file (file)
);下面我们是PHP脚本，首先我定义MYSQL的信息。my:x ~1N z
$server = "localhost"; //你的服务器1g#~Qa{$I
$db_user = "root"; //你的mysql的用户名
$db_pass = "password"; //你的mysql的密码
$database = "users"; //表的名字设置统计的时间(多少秒内在线人数) rjv;r7A5}
$timeoutseconds = 300;取当前时间。n6FP8N;T*H.{E
$timestamp = time();上面的完整代码：/O4j7q2Q}#]Mc4eK
<?php
$server = "localhost"; //your server`:f X3LK*stGV r
$db_user = "root"; //your mysql database username
$db_pass = "password"; //your mysql database password if any^NYZn
$database = "users"; //the db name8c k)zFI V
$timeoutseconds = 300;//timeoutseconds limit
//get the current time
$timestamp = time();L;s jy6v e#j-Y(o
//calculate the lowest timestamp allowed
$timeout = $timestamp-$timeoutseconds;l'K|N$}\rj!_
?>连接mysql_/j)hm I.{6L
mysql_connect('localhost', 'username', 'password');也允许使用变量形式。
mysql_connect($server, $db_user, $db_pass);如果mysql数据库没有密码的话可以使用下面代码连接
mysql_connect($server, $db_user);查询数据库的代码：
mysql_db_query('database', 'query');我们只要有访客就要增加一条记录。
$insert = mysql_db_query($database, "INSERT INTO useronline VALUES \*Q6AP2_1n2b*j
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");
如果用户用错误信息的话，这样处理。
if(!($insert)) {
print "Useronline Insert Failed > ";
}然后实现当超过设置的时间就删除该用户记录。
$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");同样给出删除记录出错的处理。
if(!($delete)) {h)h,o!e+F$A
print "Useronline Delete Failed > ";
}下面我们解决数据库中不同IP的问题
$result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");使用6z$esT0XAV3n
mysql_num_rows(query);来统计用户，代码如下。
$user = mysql_num_rows($result);最后关闭数据库。
mysql_close();显示在线的人数。
if($user == 1) {
print("1 user online\n"); hO)vkR0f;y
} else {
print("$user users online\n");
}最终把上面代码写成一个PHP文件如下。
<?phpE#nu+rf
//Put your basic server info here
$server = "localhost"; //normally localhost$daCkC7fitv#Ix
$db_user = "root"; //your MySQL database username
$db_pass = "password"; //your MySQL database password
$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)qR,p"BTN(?9b8q
//this is where PHP gets the time
$timestamp = time();zX'} s!_W@r0O"o
//counts the timeout, all people which have been seen last online in earlier than this timestamp, will get removed
$timeout = $timestamp-$timeoutseconds;
//connect to databaseh~tg.e9PI6`&Jo r&V
mysql_connect($server, $db_user);xei@;D
//add the timestamp from the user to the online listr cuX? ^3J1r$g ]D
$insert = mysql_db_query($database, "INSERT INTO useronline VALUES
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");)a(]-_9] `\^)V
if(!($insert)) {
print "Useronline Insert Failed > ";
}
//delete the peoples which haven't been online/active in the last $timeoutseconds seconds.
$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");
if(!($delete)) {
print "Useronline Delete Failed > ";
}E@5C Pum] f
//select the amount of people online, all uniques, which are online on THIS page
$result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");3k:e'K WE;I
if(!($result)) {
print "Useronline Select Error > ";
} k~_(? wf7F)V
//Count the number of rows = the number of people online!Qm-|j8L,a
$user = mysql_num_rows($result);2[p6E n)H"~!b
//spit out the results[$E_n!O_#q
mysql_close();:o:[ A]X,c*z*_
if($user == 1) {:dp:sI ~ sb%}u't
print("1 user online\n");
} else {
print("$user users online\n");+h1U'Vz;S2K8G+p.m
}
?> xXQC&P0HJJ?v
[url=http://www.now.cn/vhost/][img]http://b.todayisp.com/bbs/760x90h.gif[/img][/url] _Su V!K
以上代码我是在时代互联提供的免费试用主机上测试的，感觉效果还不错，性能很稳定，不信的话你也可以去试试。当然，记得指出我这个程序中的不足先哦。/K/Zs,A#\p h)p
时代互联是行业内最早开始提供PHP 虚拟主机的公司之一，现在已经是的金牌域名注册商和中国互联网客户满意度十佳单位，产品功能已经非常完善，特别提一下几个特有用的功能：数据库自动备份、免费集成繁简通简装版、多域名绑定、多子网站支持、GCDN 网站加速器、镜像加速、高级访问统计系统、支持WAP、可选电信/网通/香港机房。9~4ws$hGiJ
我之前建站的时候选的是他们公司标准商务E型，因为这款机型还特别支持ASP.NET3.5(3.0/2.0/1.1)/ASP。R|(LY"gz?
当然啦，这两款主机也是相当不错的。_`a5H4`5o hvLu#s ]
智强商务B型：Unix /Linux 操作系统+独立网页空间1000MB+送1000MB邮局空间+100MB MySQL数据库空间=1869元/年8y$p%E'HO
标准商务B型：Unix /Linux 操作系统+独立网页空间500MB+送800MB邮局空间+60MB MySQL数据库空间=1365元/年
提供一下这个公司的联系方式：请见：[url=http://www.now.cn/vhost/]http://www.now.cn/vhost/[/url] fdS i [
空间专线： 0756-2623871 QQ：168075865，好象还有全球免费网络电话:全球免费咨询电话 [url=http://www.now.cn/callcenter/call.net?LineName=55]http://www.now.cn/callcenter/call.net?LineName=55[/url]D#LJ4v5w
自己加QQ去问吧。

页: [1]

捌玖网络工作室's Archiver

刚用PHP写了一个网站在线人数的程序，请大家进来指点下！