取得客戶端的IP,$_SERVER["REMOTE_ADDR"]# K0 C# t$ R ]$ {6 w% G7 a" x4 ]4 N
IP不在範圍不給訪問。$ N* r# B% Z" } g4 a7 J" x1 `( J
答2:
$ a' u& S. e5 r" x0 k Y& Q5 F限制某個頁面,用樓上的方法.
; g3 y7 U) Y. }% m b+ B2 Yif(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){5 S$ e* }% H& x4 C4 u
echo "可以訪問";1 Z4 I s+ n8 E! ^, H, x2 G: m
} else {
. ^/ J+ K& ~1 u% h; Q echo "拒絕訪問";4 f1 y4 q6 e& l9 M x
}
7 F$ [6 j. p! x# i! b----------------& \+ ~, \5 Z5 R6 v
限制整個網站(apache服務器)在httpd.conf中:
) W$ _, w# U' X' P$ K% l; a1 Ndeny from all
7 i6 z1 w2 P+ Z+ x1 C: S! m/ Lallow from 192.168.0.x
1 A5 r" U2 f$ p- m! I+ C答3:
3 G9 T( K2 V }3 l* |4 ?% yif(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){
, d8 e* e1 T6 T9 y+ T7 A9 j+ K3 j===>if(eregi("^192\.168\.0\.",$_SERVER['REMOTE_ADDR'])){" }1 t" x/ S5 V# V4 D
答4:7 m& y3 G' t1 \1 v3 D @3 e6 X
function getip()
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if(getenv('HTTP_CLIENT_IP')) 8 d& V4 ?! [/ @2 j) |; d
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$onlineip = getenv('HTTP_CLIENT_IP');
1 A( j8 K9 O: L% t2 `% t }
, A" s( T: l" e- B7 h elseif(getenv('HTTP_X_FORWARDED_FOR'))
3 r T4 }0 W0 \ {
, P4 J/ F( H/ O) y5 k& I P $onlineip = getenv('HTTP_X_FORWARDED_FOR');% F& L# _" K) ~' Z" h5 T
}
- Z- A) _7 a+ ]5 A elseif(getenv('REMOTE_ADDR')) # |1 Y% ~4 S6 M) \6 l) J5 H
{
- j) S& k! }* f( o l, z $onlineip = getenv('REMOTE_ADDR');
5 X1 X9 ?1 ~, U& f0 K }
/ ?2 X# _% y: R9 @: D& ] else 6 r4 k7 ?0 M5 W! ?! S0 X, k
{
& z1 d2 m9 Q3 v Y $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
$ }3 M5 d y8 d- j0 v' Y: ^ }+ w: j# X, U( W5 _, k) c
return $onlineip;
+ s) Y2 O- I" Q6 d4 d8 @4 F! k! l; [}
7 X& u, y" A/ F4 W
9 a9 q5 ~, h/ W8 Q
% z6 i( A2 D* R' Z, I# y5 G+ rfunction estop($ips)
8 ~' x; X5 n( f7 q: ]{ 7 M9 s0 Q; Q8 E+ a" J
global $db;
' u6 G* s! f' T6 o" ^ $ip = explode('.',$ips);" N6 g, K) H! M0 j1 S j9 r5 R
$sql = "select * from ipestop"; B2 C. o# N, C- a5 C7 Y5 u% e/ x
$db->query($sql);
- d$ S; h# B' A, J0 l while ($banned = $db->records())
$ W& h4 o, F# l& n { + N6 ~& N* q5 N/ p2 N5 L1 c
$exists = 0;
& v( r" D" m0 n& N# o for($i = 1; $i <= 4; $i++)
$ Y8 t# \2 o* G0 A- u {
" M G6 U' b+ x if($banned["ip$i"] == -1) , ]$ L7 w* q" o
{, S5 L( g. ?" d+ X
$exists++;& U6 U+ d$ q7 Z" g- A
}
' \8 D* v8 F' @ elseif($banned["ip$i"] == $ip[$i-1]) 3 y0 w0 R- w# u8 S7 a
{
6 O& ^$ O8 c& H i/ @ $exists++;
+ j7 |) G4 H6 B+ g, b. ]1 g }3 D8 Z0 T8 j, M
}! N, _$ ~- c* ~( u b
if($exists == 4) 3 d# ?1 a5 Q+ c( ]6 Q6 ]! x
{6 r7 {+ ^$ T3 S6 @9 Y
die("該IP 已經被禁止訪問!");
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8 f: i+ K9 F+ O% W9 L4 G/ y }5 a& C% W/ O5 Y& h% y
}
2 b5 q$ o; D% Y. G) b) C
4 K5 T5 s9 {, z- i表結構:
6 U" ?% u; o8 n" Q" z. mCREATE TABLE ipestop(! X. r4 o4 E8 u/ j% T
id smallint(6) unsigned NOT NULL auto_increment,8 \: o X5 N; G0 q$ [) E5 t% O
ip1 smallint(3) NOT NULL default '0',
( N0 C) j E% u1 Q8 s ip2 smallint(3) NOT NULL default '0',+ B% G1 |/ R* B# X% g4 q
ip3 smallint(3) NOT NULL default '0',
1 Q C! P( Q& w0 n3 o2 t4 x7 O* [ b( E ip4 smallint(3) NOT NULL default '0',9 _$ ~, Y+ ?; P$ m! ]) N2 U
PRIMARY KEY (id),
1 ~9 H) k2 B2 X! \, a KEY ip1 (ip1),
2 u# O- t4 `* o8 p: U8 d& K KEY ip2 (ip2),+ f% c/ W: ]8 H% ~
KEY ip3 (ip3),
- r" n: Z. y' X+ l( h [/ w KEY ip4 (ip1)
) Q( G2 x! s& j4 `; ^& w; W) TYPE=MyISAM; |