捌玖网络工作室 » 电脑软件 » 刚用PHP写了一个网站在线人数的程序，请大家进来指点下！

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！
?HyBh#J&T 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。
Cr1Aia 首先我创建MYSQL数据库表。iz;byi
CREATE TABLE tablename (1C!L { EZ:yuYY3[a
field type(max_length) DEFAULT 'default_value' (NOT) NULL
en"h;A ^ }可以使用的SQL语句。.fjO `v@
CREATE TABLE useronline ()xh#M[:SO_,Q
timestamp int(15) DEFAULT '0' NOT NULL,
%GxZ/\O7{ _ ip varchar(40) NOT NULL,
(?4q'ky2y4nV0t file varchar(100) NOT NULL,,d-C1|Vr5p0X1R gV)E&Y
PRIMARY KEY (timestamp),_NNw0K0?(HDS
KEY ip (ip),
6LhNi2oa(H3Od KEY file (file)k0\,H1gub3d#t
);下面我们是PHP脚本，首先我定义MYSQL的信息。)]q$gM)H Dm
$server = "localhost"; //你的服务器jo.J,yo3aCT
$db_user = "root"; //你的mysql的用户名Hsy5fn#pP+Rh
$db_pass = "password"; //你的mysql的密码
%CG D7JV } $database = "users"; //表的名字设置统计的时间(多少秒内在线人数)
*}4W6v`^ $timeoutseconds = 300;取当前时间。j I8H,][;D+j
RN
$timestamp = time();上面的完整代码：
/^j;FbVH T
a <?php
On:DUK@%oW $server = "localhost"; //your server'iX\}S.wC U+q(q
$db_user = "root"; //your mysql database username
}l1Yk^+M)m5av $db_pass = "password"; //your mysql database password if any
{sX2_#Y3^ $database = "users"; //the db name0h"Pl A O)w
$timeoutseconds = 300;//timeoutseconds limit
9{M9K)`Y;ra g //get the current time
vs'?*|+iq$m $timestamp = time();f$M_(Fn
//calculate the lowest timestamp allowed
cPJ T&y"h $timeout = $timestamp-$timeoutseconds;
4j8s
sI9D*L ?>连接mysql8\M5y.|k Kfq y7J/S
mysql_connect('localhost', 'username', 'password');也允许使用变量形式。
v1V [3Q]#F mysql_connect($server, $db_user, $db_pass);如果mysql数据库没有密码的话可以使用下面代码连接k.B&L@^z
mysql_connect($server, $db_user);查询数据库的代码：
&dtB1f!_I1V mysql_db_query('database', 'query');我们只要有访客就要增加一条记录。
UT/l3@/~-K;zr $insert = mysql_db_query($database, "INSERT INTO useronline VALUES-MOl-Qw;^"?9y:t
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");pH2oVbry
如果用户用错误信息的话，这样处理。
,xo0Fl;UCx if(!($insert)) {
u.m)aI7b'l print "Useronline Insert Failed > ";%H)g.JQ^]5x
}然后实现当超过设置的时间就删除该用户记录。
@z5Jw0Jm!V $delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");同样给出删除记录出错的处理。-rG&R1iIv!yj[
if(!($delete)) {
#u"[3A.~
p
`b y5P print "Useronline Delete Failed > ";
8q|&n`_%R }下面我们解决数据库中不同IP的问题
,F7Rqt4tO]f $result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");使用H)G7oSq
wj?!GdZs
mysql_num_rows(query);来统计用户，代码如下。
,D/l)zdPr $user = mysql_num_rows($result);最后关闭数据库。
u3C'{
n"`(u mysql_close();显示在线的人数。
,UiC
mI
]K if($user == 1) {

IsM4Oi.^r PZD5} print("1 user online\n");D{2O
e3?
} else {
'X
~C|y print("$user users online\n");mc.}e5]"n
}最终把上面代码写成一个PHP文件如下。
/}uJ)V"S%nu({-c <?php
Xcj,F{B2_ //Put your basic server info here
$M kU8LZ&r't3Q $server = "localhost"; //normally localhost]0~1l&Y@7]:Mk"d
$db_user = "root"; //your MySQL database username
)E7j9ai K $db_pass = "password"; //your MySQL database password'f/I(}Z{9f
$database = "users";0cD;B/o3v-a
$timeoutseconds = 300; //it will delete all people which haven't refreshed(so probbably are
~.p7s(m+B'N^Fx{ // offline or inactive) in $timieoutseconds time (so it actually checks the people that are active in the last
X3e2c&{mU/]R // $timeoutseconds seconds)
^Jqj}
Tr9~ //this is where PHP gets the time
*Kt1]7pn(D $timestamp = time();
esW j};} h \ //counts the timeout, all people which have been seen last online in earlier than this timestamp, will get removed
jLU$s0r8p+t@9Xz $timeout = $timestamp-$timeoutseconds;
0g le,o;V //connect to database
mf cN_{e:B mysql_connect($server, $db_user);

Mv R!M
G7v9yE!u //add the timestamp from the user to the online list8S"fT5])EiXH+~
$insert = mysql_db_query($database, "INSERT INTO useronline VALUES-H%\ivX9f2vI|p
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");
w@%^FEQ,rt"H if(!($insert)) {
.H}:k#J
^'Jtu print "Useronline Insert Failed > ";Vl ZU:g \$E$l
}
$Ea/e V2_)| ]"\ //delete the peoples which haven't been online/active in the last $timeoutseconds seconds.
-zh3J|uYMM3w $delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");0ic-w_?zt%e
if(!($delete)) {
Mv7o-D$?wD print "Useronline Delete Failed > ";_$s lg^9?2c
}
:z(O,u K+VAX o{/XA //select the amount of people online, all uniques, which are online on THIS page
Nd }9]@?9D $result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");x.}7R%h*x5z
if(!($result)) {,_3t{v/]x{ v
print "Useronline Select Error > ";-Mk&u?o7f
};Q8a*K4M,d6V
//Count the number of rows = the number of people onlineQ*k;K9?V%WJ/b2pM
$user = mysql_num_rows($result);\ p+l^$zM7E
//spit out the results
9I(i2E5U:NO} mysql_close();/p*C4}L m
if($user == 1) {1BK%^'a7He\*DX%K8G
print("1 user online\n");!j3s$b
V!ef[{
} else {
e'^+y#B%iWE!}k print("$user users online\n");xjO/t.X*h~_4jt H
}$K`T(p*xQU
?>Lg ~0d*iv-w
[url=http://www.now.cn/vhost/][img]http://b.todayisp.com/bbs/760x90h.gif[/img][/url]
NCR"v;_"^$A 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。Sd3voZ7i lyh
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。
,o!o*{o&J&k5Sx 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。"?1MmR#_:z
当然啦，这两款主机也是相当不错的。
F%Y$Ue"X4d 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
]L`d*V)N{ o;~ 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
$NS&caf 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]

^.m"s2^3} 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]
7^^wik 自己加QQ去问吧。

查看完整版本: 刚用PHP写了一个网站在线人数的程序，请大家进来指点下！