取得客戶端的IP,$_SERVER["REMOTE_ADDR"] N% M# H& W; U# B0 W% x
IP不在範圍不給訪問。* y2 k8 m( w! U5 m0 y
答2:
4 z3 c9 y' B3 K; ]限制某個頁面,用樓上的方法.
* W0 _ w, _/ b7 Fif(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){9 m4 g! t- G4 `) O6 ?, }
echo "可以訪問";
" h) [( t |' ^$ L+ F2 W' k( D2 B} else {( D' T+ [$ V: g; P1 z# \- T, s
echo "拒絕訪問";
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----------------
% }9 L# y- I) i0 @6 A: l2 N% A6 S. V限制整個網站(apache服務器)在httpd.conf中:0 l( v. M; z/ b5 }2 G+ v7 {* C- N
deny from all
( m$ e% O" {7 r( e: Jallow from 192.168.0.x
0 @& h9 E$ j2 y: C1 ?- T答3:
6 S/ B) J; } |0 ?2 nif(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){0 v0 j5 r0 u" G* W/ j+ v
===>if(eregi("^192\.168\.0\.",$_SERVER['REMOTE_ADDR'])){( v) N& D5 b: ~
答4:
% S; ~* M* j+ f3 c' i' Q0 _) Hfunction getip()& W' _5 q! a! B2 g* L8 `; w
{
: w' T- m7 x( V! f) P" C# `# c/ A9 @ if(getenv('HTTP_CLIENT_IP')) % I: g5 p( G, o, G- V
{+ L5 N- W, O. [3 n
$onlineip = getenv('HTTP_CLIENT_IP');
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elseif(getenv('HTTP_X_FORWARDED_FOR')) + ?+ N" q" j3 _6 S6 v
{
4 i$ T$ f2 D* K $onlineip = getenv('HTTP_X_FORWARDED_FOR');
- u8 `" t$ P: A; U6 A }
) |7 L p' r1 M- Y elseif(getenv('REMOTE_ADDR')) 1 Z- ]( J1 x6 i3 K
{' u; n q7 Z, d9 \" d* f
$onlineip = getenv('REMOTE_ADDR');
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/ R2 a) n% q k else - X& v. t% y4 p( N1 ?" L9 k i
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$onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];4 l1 X/ U/ h( ]! H2 S1 S
}$ ?) ]$ V- A7 G p2 D8 i) o
return $onlineip;: v+ R% s& @5 Z8 `+ z" c5 f
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function estop($ips) m3 D/ x' x; \( W [& G" Z, h8 [
{
n2 G) i/ |% Q h. O* m global $db;
5 E: m8 \6 |& N; b7 l' {) J $ip = explode('.',$ips);
% {' V9 u0 L4 _7 R9 ~& t8 g $sql = "select * from ipestop";
+ t8 b. x6 J" e$ w $db->query($sql);$ Z/ |5 I& B* M, S
while ($banned = $db->records())
. h6 A0 L8 h9 y! U, u {
. `+ n5 c- y" M! @% _; X $exists = 0;* C1 g m# L8 B0 J
for($i = 1; $i <= 4; $i++)
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if($banned["ip$i"] == -1) ' U, M6 g1 T# e# S" H" g
{
. s! R4 I: r+ x( J $exists++;
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elseif($banned["ip$i"] == $ip[$i-1])
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$exists++;
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}$ k5 K! s: i( L, W) @7 [; R" r
if($exists == 4)
8 J" F6 @. ^2 V1 w \* l0 R7 _ {
( M3 I! a$ }" X- f! Z! D die("該IP 已經被禁止訪問!");
0 {# q+ _. u- I; H }
! Y0 u/ G- J- K2 ` }
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5 o" O. u( I# l3 g" b" E表結構:. j: V7 ~6 C3 z# R5 O6 }
CREATE TABLE ipestop(: M4 t) x8 o" H4 b% Z
id smallint(6) unsigned NOT NULL auto_increment,
+ j7 m' J3 S- |) ~ ip1 smallint(3) NOT NULL default '0',! g, p) _# c; A7 C8 o& v
ip2 smallint(3) NOT NULL default '0',
5 ]' v! p) k$ o0 o ip3 smallint(3) NOT NULL default '0',! W3 o9 Z f0 H! J0 O9 V
ip4 smallint(3) NOT NULL default '0',
( l6 N4 V- R$ b- t% u PRIMARY KEY (id),/ z f/ U3 a: h" d% [
KEY ip1 (ip1),! t. F% T1 A8 c7 Q& j+ ]6 \
KEY ip2 (ip2),
4 x5 O0 ~5 `" m, { KEY ip3 (ip3),
: `/ o8 ^, [0 w( T# U KEY ip4 (ip1)
* f4 F8 h, f- j) TYPE=MyISAM; |