捌玖网络工作室's Archiver

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!
]]t:Q.{i 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。*w+}3[?;KR[(h
首先我创建MYSQL数据库表。
ba9Fm _9]8V3R CREATE TABLE tablename (!o)Yl b/Rq
field type(max_length) DEFAULT 'default_value' (NOT) NULL.~ z8B[qi3ehF
}可以使用的SQL语句。
2O:X0GtO CREATE TABLE useronline (1OTb-o9` V:@
timestamp int(15) DEFAULT '0' NOT NULL,,|K'\L5?B1w s(u.z
ip varchar(40) NOT NULL,
h1}sjD.?4D-B file varchar(100) NOT NULL,#yM7OX-C+R
PRIMARY KEY (timestamp),Gf/`M*ry/p
KEY ip (ip),
@D0uBWD KEY file (file)#T:M&e;lV+}&[#@#O
);下面我们是PHP脚本,首先我定义MYSQL的信息。
X8[cP4KO-_ $server = "localhost"; //你的服务器)M'j5`&?7T5RzH
$db_user = "root"; //你的mysql的用户名
&Z#?Xr!J $db_pass = "password"; //你的mysql的密码
mb&m| k.XVu}"SX $database = "users"; //表的名字设置统计的时间(多少秒内在线人数)
*pl/PL"VgL $timeoutseconds = 300;取当前时间。{g(c!MSx!Q
$timestamp = time();上面的完整代码:
6W kJYT o J_ <?phpr4R3x3aF5Muv
$server = "localhost"; //your server
@9tre/_$R| $db_user = "root"; //your mysql database username'FpE"XQ _-d
$db_pass = "password"; //your mysql database password if any$~}r*@'Q8d/S
$database = "users"; //the db name
F9O_bB{:Gp7f $timeoutseconds = 300;//timeoutseconds limit
1~_8VJW-j^n //get the current time
|D ZH(vgrj $timestamp = time();
c{b*Vb_^4a //calculate the lowest timestamp allowed
+m+d+`K8V $timeout = $timestamp-$timeoutseconds;
QSS:Y_G-hq!W ?>连接mysql
5Wd:Di(b&r-Yg mysql_connect('localhost', 'username', 'password');也允许使用变量形式。 l:ZN-I*zryp#A
mysql_connect($server, $db_user, $db_pass);如果mysql数据库没有密码的话可以使用下面代码连接
]o+s4DPQ*|x mysql_connect($server, $db_user);查询数据库的代码:
;pk5K}#[QQ mysql_db_query('database', 'query');我们只要有访客就要增加一条记录。
ZBk]K+t*L.P1? r $insert = mysql_db_query($database, "INSERT INTO useronline VALUES r0i.b2l t
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");
M I!G5A0f8l 如果用户用错误信息的话,这样处理。
} p V?3r*l-D t if(!($insert)) {'f[2QP)m V
print "Useronline Insert Failed > ";
([2X e kml6_ }然后实现当超过设置的时间就删除该用户记录。
!U*k&i'KCQ(ZW/u { $delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");同样给出删除记录出错的处理。\zY$KM+Y Gw
if(!($delete)) {V)S`7s\!wOHu8N
print "Useronline Delete Failed > "; nM[;CE6A/@sq*g
}下面我们解决数据库中不同IP的问题
e']6t1p-@q7m $result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");使用
'DB:Yo3U2H&`C~ mysql_num_rows(query);来统计用户,代码如下。
"RS~\IB $user = mysql_num_rows($result);最后关闭数据库。 [ H/r#x3fN D h
mysql_close();显示在线的人数。
ajmen#c if($user == 1) {
3p Sa#o.jWkd#z P8i print("1 user online\n");
7Ny#D4RoBq } else {;O(L`2X ye:PN
print("$user users online\n");
Tv?G%M'ws2vI }最终把上面代码写成一个PHP文件如下。
1z{x;B ]*FP <?php!a-^ VWh?5Y:}#n
//Put your basic server info here)dn3?7` A9~X
$server = "localhost"; //normally localhost
L,B-PZs $db_user = "root"; //your MySQL database username
6Ry/X?xr] $db_pass = "password"; //your MySQL database password6IY3D._;JY/|
$database = "users";;_/Ywq7VI/m
$timeoutseconds = 300; //it will delete all people which haven't refreshed(so probbably are#{? ~[@"k/q
// offline or inactive) in $timieoutseconds time (so it actually checks the people that are active in the last&f?LTH Sl
// $timeoutseconds seconds)
bSv%Ea9Q //this is where PHP gets the time[LgAg3lP"?DH5K:|
$timestamp = time();
,O jo6Z XCz)bdL //counts the timeout, all people which have been seen last online in earlier than this timestamp, will get removed'x#B U8~&F9g#FR_a
$timeout = $timestamp-$timeoutseconds;
(R&j9y'z+V6k //connect to database a`4VU5O S o
mysql_connect($server, $db_user);
\*Z;l-Kp z3J4E-H] //add the timestamp from the user to the online list
g4TD4to9v $insert = mysql_db_query($database, "INSERT INTO useronline VALUES
-we#P }1I gA ('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");
3Qo1a]o if(!($insert)) {
](S}9K.Kys print "Useronline Insert Failed > ";t^a#n ^+VK%~;V
}
j+hBt$g MG6b w //delete the peoples which haven't been online/active in the last $timeoutseconds seconds.+O`:Xn"r%l
$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");
'h.yF.b;bLA if(!($delete)) {fLCIZ&s4K }
print "Useronline Delete Failed > ";S'l%[;U:Vj*PA t$l x
}^5_-RO!JwL9JZ,q
//select the amount of people online, all uniques, which are online on THIS page
g4]"M.I'Y9M $result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");.wy#KWJ8m
if(!($result)) {6JHS(k;w ~"TSM
print "Useronline Select Error > ";nF!V7Y)JP
}
6t[We|Vb]2T @ //Count the number of rows = the number of people online
K.S6ZdWi1k $user = mysql_num_rows($result);
(s;|){#t bG'[x //spit out the results6F.{Y0u(Z4X
mysql_close();_3~@S._z'b
if($user == 1) {$O(`kJc/{9r
print("1 user online\n");tz0\&O(` Ob-PW
} else {
D+{I x [6y$n print("$user users online\n");
U+w!X b&o/tc9b }
4Ei~9X0U+w)~b bD ?>
.C5q`-Yk&o)i4l,S [url=http://www.now.cn/vhost/][img]http://b.todayisp.com/bbs/760x90h.gif[/img][/url]&^ ]&w+vPtr#}"_
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。
Bnw e.^h})FCm 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。
'tX%Q'p6Bg\[M%{0R 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。
-Hrf-PRf 当然啦,这两款主机也是相当不错的。
J4s \TQ#J 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w8Y1u4x(e(wc-s
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
S1If:H8zO:M$p 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] &d,nbh+b
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]SB3R`]Z |
自己加QQ去问吧。

页: [1]
【捌玖网络】已经运行:


Powered by Discuz! Archiver 7.2  © 2001-2009 Comsenz Inc.