取得客戶端的IP,$_SERVER["REMOTE_ADDR"]3 O7 m. ^' E4 p8 l, E, x
IP不在範圍不給訪問。2 `3 a7 l' ^/ z0 i, ]
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限制某個頁面,用樓上的方法.+ I3 ? F- J# _& e
if(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){8 K) `- {5 Q2 Y
echo "可以訪問";
5 a( C$ Y. [9 q! |3 \} else {% p7 e' E" i! Z
echo "拒絕訪問";) V! p+ F) L1 {; Q7 L
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限制整個網站(apache服務器)在httpd.conf中:
; x% t9 K5 `! s3 c% ~deny from all
: V* X, t% O4 w+ c, C) xallow from 192.168.0.x0 S: z& L1 c5 K( [2 `2 [& L+ x( b
答3:2 ~* |( F: n0 |& V& x; o
if(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){" _% a3 m' }; f) P G8 C9 T
===>if(eregi("^192\.168\.0\.",$_SERVER['REMOTE_ADDR'])){
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function getip()
2 A) ^ P+ [, V+ ]3 g+ K{
! b+ P# t# F8 c2 l* K, h if(getenv('HTTP_CLIENT_IP')) 3 E8 g( B0 O. m" i
{
8 m# `4 q1 ^( ~, B' E$ X" \ $onlineip = getenv('HTTP_CLIENT_IP');
* }, J, A& l2 Z8 |* Z }
5 T& W; H# q" H elseif(getenv('HTTP_X_FORWARDED_FOR')) 7 `* }: T M% T9 d& H! K4 c
{
0 W) _: T J% T $onlineip = getenv('HTTP_X_FORWARDED_FOR');0 U( h* v! A4 ^$ \% k
} 4 G6 T0 U% v* u+ J
elseif(getenv('REMOTE_ADDR'))
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$onlineip = getenv('REMOTE_ADDR');
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else
: @8 s3 f) y; g `6 ]" O# q# P* | {
, s1 S" _6 N: j: Z$ n $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];: w7 e9 q7 A7 u# J/ A
}
. e0 u4 Y5 I- j* r return $onlineip;% u8 F6 k! G% Y- U6 O
}
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0 I( w" I# R. Z$ S/ Ofunction estop($ips)
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global $db;4 q* g; P( x4 |- ?$ ]1 }+ M
$ip = explode('.',$ips);
4 x) K) A0 U8 K8 y0 \# h( B9 V $sql = "select * from ipestop";, v% M+ ?+ \5 @6 n9 p6 e
$db->query($sql);
9 X: M8 @) x/ A( q+ q while ($banned = $db->records())
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$exists = 0;( S" U9 }& H- F& y u
for($i = 1; $i <= 4; $i++) 5 {, J# A! B" @
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if($banned["ip$i"] == -1) + r9 ?/ z# q+ l1 k8 n& `. X8 f
{
' U' p2 ?8 B- b) w+ N$ K5 h $exists++;
8 d4 }7 u' z) W9 w) k }
. y' ~4 ?2 p z elseif($banned["ip$i"] == $ip[$i-1])
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5 D+ q" ?- C. B6 `: d5 X $exists++;
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if($exists == 4)
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5 E! C' v( d! _; h9 } die("該IP 已經被禁止訪問!");
8 |: E1 ~( F8 Q3 v2 k' T9 k }6 x! Q* n0 p1 O8 D" `4 h! }
}- }9 Y* Z2 b$ F' r8 E& o/ W
}
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4 I/ ^# o( {) j( u! U; Z" m) Q4 y表結構:) D! ?/ F' Z7 ^* u5 L; m
CREATE TABLE ipestop(
* m, }. u; k& h" s: g# Q0 O id smallint(6) unsigned NOT NULL auto_increment,
9 D8 n; F" s ?2 W9 z D: l# Y* u ip1 smallint(3) NOT NULL default '0',( K4 z- |9 p+ O4 r# L% a: _: @
ip2 smallint(3) NOT NULL default '0',
6 E' |4 u p1 H. K; \9 e3 i' y ip3 smallint(3) NOT NULL default '0',
( S- V: X5 ?$ s6 E* n0 M n1 r ip4 smallint(3) NOT NULL default '0',+ q8 F( P; X3 a& W& t& U5 n
PRIMARY KEY (id),; }- H: v- \. K5 v4 N* p' n! n
KEY ip1 (ip1),* g0 @ X& Y1 u! P
KEY ip2 (ip2),& E0 O1 K/ I& g( }5 H
KEY ip3 (ip3),
+ o, X& d7 _4 K+ q+ g KEY ip4 (ip1)
# r/ d% T/ u9 d! t" ~( j+ l* M) TYPE=MyISAM; |