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！8_OD4mCFs,O'z E
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。C4nI*rOt;hW
首先我创建MYSQL数据库表。
p'kk N*R%F1]N CREATE TABLE tablename (
/tq&Mi"e Y field type(max_length) DEFAULT 'default_value' (NOT) NULL
M-o&[|;Nq#N6j(Oal }可以使用的SQL语句。ym8m4r~!f*|R
CREATE TABLE useronline (
?/E
yU3\)H'XT timestamp int(15) DEFAULT '0' NOT NULL,~A a
M z|2ev4]
ip varchar(40) NOT NULL,
L2u x[&a9DB,ao file varchar(100) NOT NULL,S!V;e4z.dQS
H!y
PRIMARY KEY (timestamp),i&^S+v*G+peVjg3M
KEY ip (ip),8jE9E4Dk#Sa;o
KEY file (file)
iD0@K"]Z:a );下面我们是PHP脚本，首先我定义MYSQL的信息。
|H:CF3jg $server = "localhost"; //你的服务器?:Mx[ j/DR z
$db_user = "root"; //你的mysql的用户名

XS,Cw4k1T$M.` $db_pass = "password"; //你的mysql的密码
8}O/FJ%K+{ Ac $database = "users"; //表的名字设置统计的时间(多少秒内在线人数)3GR&L$Cq[_;v:t
$timeoutseconds = 300;取当前时间。*Y.tF9R*f.T@7z Xd4fo
$timestamp = time();上面的完整代码：
#^$?1jenYn9B J0Q <?phpqb Gz2x"m5["yG:~
$server = "localhost"; //your server{x!pvX"i,|z
$db_user = "root"; //your mysql database username
F5uPBj $db_pass = "password"; //your mysql database password if any
Q'?:o#|6N? $database = "users"; //the db nameG@%B+c'{q$]
$timeoutseconds = 300;//timeoutseconds limit
OG|}V g //get the current time9f"R-F0b2HJava
$timestamp = time();3Zp)b:j$MiZ
//calculate the lowest timestamp allowed'O!S%l5Xk*t
$timeout = $timestamp-$timeoutseconds;#YQ?"j/m#Nm
?>连接mysql
g,~yN;R mysql_connect('localhost', 'username', 'password');也允许使用变量形式。\;P:T3C \
RAw&I
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
$EUgY1p)U mysql_connect($server, $db_user);查询数据库的代码： S'h6}q]c`E3W
mysql_db_query('database', 'query');我们只要有访客就要增加一条记录。
kgZ)R+b\)? $insert = mysql_db_query($database, "INSERT INTO useronline VALUES"Zd;?)|'i`Os
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");
:\yx|-M/RU` B
c 如果用户用错误信息的话，这样处理。
]6e4}bV+kr#W@ if(!($insert)) {Z Cc-iUyVS
print "Useronline Insert Failed > ";@4efL,f"d?
}然后实现当超过设置的时间就删除该用户记录。W4`0`f;LNh9F
$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");同样给出删除记录出错的处理。
ey-g.EN}][ if(!($delete)) {
v U-a\,VL#X print "Useronline Delete Failed > ";Z2ef(X VT"S
}下面我们解决数据库中不同IP的问题 dB7E*j]&v7T
$result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");使用5|CAo-M ICt
mysql_num_rows(query);来统计用户，代码如下。
"?mvl4lZb $user = mysql_num_rows($result);最后关闭数据库。
gx}&ds7R2|y mysql_close();显示在线的人数。$AsZ go#Y
{5?
if($user == 1) {
\W@#B aPS-oh print("1 user online\n");G @)Trcs!n9Q*^;v
} else {!t]c)Np$T
print("$user users online\n");
+q4D?1Ijz1P u7I }最终把上面代码写成一个PHP文件如下。
Peu;zdY"D ^:dD <?php*oVV6h @@*so
//Put your basic server info here:p4i gf|Q)R6x
$server = "localhost"; //normally localhost nVE8c;A/w OR
$db_user = "root"; //your MySQL database username
9A0WUoirt $db_pass = "password"; //your MySQL database passwordU1jfh+u/e
$database = "users";
,j:{/@ h1AQZM $timeoutseconds = 300; //it will delete all people which haven't refreshed(so probbably are
`0G&gt4F4W7v(K // offline or inactive) in $timieoutseconds time (so it actually checks the people that are active in the last
lz7C xH;v:Fp(RFJ // $timeoutseconds seconds)8f({ H OF3h
//this is where PHP gets the timel3M9CU]
$timestamp = time();_%|3M)av~"V
//counts the timeout, all people which have been seen last online in earlier than this timestamp, will get removed
D6t;Fr)| $timeout = $timestamp-$timeoutseconds;;{q+Wb\0czH
//connect to database&x7?$K9l5W!R-qZn!Fz
mysql_connect($server, $db_user);y"Crp`&m"x
//add the timestamp from the user to the online list
[9KS\SZ $insert = mysql_db_query($database, "INSERT INTO useronline VALUESN*]6[`q ky8~(Au
('$timestamp','".$_SERVER['REMOTE_ADDR']."','".$_SERVER['PHP_SELF']."')");1Sk2Bt m[
if(!($insert)) {
bN1oR~U{ Y print "Useronline Insert Failed > ";
QlW[!l)t)W{&s }9A'HBq(}_1_
//delete the peoples which haven't been online/active in the last $timeoutseconds seconds.%Fy4jRUt!O
$delete = mysql_db_query($database, "DELETE FROM useronline WHERE timestamp<$timeout");{u B`
[,w n8a/I
if(!($delete)) {.pldPO,Gzn6}
print "Useronline Delete Failed > ";
l2RA7Rh4D9T?P }
^9Bfs6w6h]u+E
^].Bf //select the amount of people online, all uniques, which are online on THIS page
GN`0Tu%j5k,Y&~P $result = mysql_db_query($database, "SELECT DISTINCT ip FROM useronline WHERE file='".$_SERVER['PHP_SELF']."' ");AFM(~8Xb(D"_)r}p
if(!($result)) {:oLL te:v/}9di
print "Useronline Select Error > ";
ph2a2b%j1h }xt k [c8e
//Count the number of rows = the number of people online
8yYifM $user = mysql_num_rows($result);7eW8~j_vS
//spit out the results2}"FZAE
mysql_close();%t;J-y/] Hn$n3`.Z#}
if($user == 1) {'~Z,]i6hyX
print("1 user online\n");^5Zi^\)~
} else {
^FyVt%j print("$user users online\n");9d5o9q4T EDQU;\r
}m B5W"h^5CD:I
?>
G5B\
E9MHQ [url=http://www.now.cn/vhost/][img]http://b.todayisp.com/bbs/760x90h.gif[/img][/url]FJa P{$GS!m,S
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。,_%^\py
I
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。
$ZtGq.L_xb 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。
~%qOKJ*D!q9L 当然啦，这两款主机也是相当不错的。
!~;x ubKc 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*f!LSTX.]
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
DD6K?2_B?hw 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] sB4gVk
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]
o*U)Q h+_ 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！