取得客戶端的IP,$_SERVER["REMOTE_ADDR"]- j0 U# I9 s# n' Y
IP不在範圍不給訪問。
4 ]) |* D. h/ u' j2 a* ?, j答2:
! l) L s7 O% @+ r2 z限制某個頁面,用樓上的方法.
( u/ _6 R' _2 c3 A% Q5 b6 g! D" yif(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){/ X( [. P- Y. V* Z) o+ i& g: F
echo "可以訪問";& z7 ~: M4 l( y( U
} else {+ P( k: F+ b$ K5 @4 q8 W
echo "拒絕訪問";7 N; O; ?+ K8 L# ~
}
. @! q" c5 T: _" C0 z/ o----------------
* `) ^2 m& U5 |: X- P5 `限制整個網站(apache服務器)在httpd.conf中:
' f( J' ?, i+ x! F2 R3 _deny from all" F1 t/ m) G% H# b
allow from 192.168.0.x3 N7 @, F$ s# |" ?. X. ]7 r! D. ]& B
答3:
& ~- W" Z: a. b7 Hif(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){" W2 f, m6 y9 j4 n! w
===>if(eregi("^192\.168\.0\.",$_SERVER['REMOTE_ADDR'])){
; w" a' N1 `' F [9 T, ~# T答4:
& ~" F, Q% P6 w9 O9 @% Cfunction getip()" d9 u6 z6 K. @) p- G
{% B5 U+ W; _7 [' k( H
if(getenv('HTTP_CLIENT_IP'))
: a6 m d" R9 H% v! L( R {
& B& n% \( ^6 i0 c* A0 E( G $onlineip = getenv('HTTP_CLIENT_IP');
9 }4 Y( ~* W5 x# n' O } 4 ~2 e, w3 A6 s, `. Y1 W+ B! B
elseif(getenv('HTTP_X_FORWARDED_FOR'))
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$onlineip = getenv('HTTP_X_FORWARDED_FOR');5 @2 Q5 J6 @" L3 E
} * [% g0 L( x% z2 E7 n: Y2 S% g
elseif(getenv('REMOTE_ADDR')) 3 r- Q' d. u& @
{* \0 m# N4 X8 q( o
$onlineip = getenv('REMOTE_ADDR');$ G% }- q- @4 ^/ P
}
* u2 u+ Q, j7 I# M- b7 r else $ i) q3 t* W+ @* Q- M/ i7 i
{
: i5 t& D5 f" b/ ?) i- V $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
% k% Z$ q" W$ S5 @ }
" g: ~5 a6 k; M return $onlineip;# h/ \/ a" Z! Q3 u' ^6 U$ i$ {# B: e
}
' [( t% c! s% q0 c" f0 u, x; k$ t) z4 I& X2 J: E) u
r/ I( K* w6 _' I) wfunction estop($ips)" d# P3 [9 @ l% r/ F! w
{
2 X; {- ] y/ }2 y& k6 h global $db;4 N9 | l( ~ ~* y
$ip = explode('.',$ips);
. i9 j* V6 Y( |* Y; B1 ]* z $sql = "select * from ipestop";' m/ M9 m8 q% v
$db->query($sql);
8 d( J4 C3 L6 J, M) r/ ~7 f" W while ($banned = $db->records())
7 o7 c* F$ G5 ^: J" Q- G {
! i# x5 |* N6 ^2 ?7 u1 R $exists = 0;
! }4 Y# A2 u) } [ | for($i = 1; $i <= 4; $i++)
- f* Q; S1 x6 G7 @$ P6 F( y {
: h3 K2 \! u( j# K: x$ Y& r if($banned["ip$i"] == -1) 9 \3 K; k9 ^9 v5 @" @; X) G
{( U1 \( p9 @, y, W6 v. o
$exists++;
+ p0 x1 G: z. h+ ^* O4 @3 N } - K/ M% c V4 n- N
elseif($banned["ip$i"] == $ip[$i-1])
0 s' C6 ^" D: T" e) v. _ {& D! \+ j6 t; B. ^. I- `% t! p
$exists++;
1 l- V5 s: w& Z* T# w; W }# K' S: }9 Q1 F7 `! t" j
}, f( e0 \# R2 P8 @8 |
if($exists == 4) 8 R0 o# t2 j& Z3 [ v2 y
{; {- F" {* `0 [ n2 o' }
die("該IP 已經被禁止訪問!");( B, K5 p; R- j1 i' V
}
/ Q- e9 L5 K; [, @; V9 B; x9 B }
6 k2 e6 @; q% j3 b, V9 f6 m y* a}
! Y1 a% G- w8 M1 P9 p( W
% L: h' e. ^& j9 ? P表結構:
2 c. q, T' a, o' o( w! j- d( sCREATE TABLE ipestop(
7 a& V, C" u& n5 ` w- V4 c id smallint(6) unsigned NOT NULL auto_increment,. s* E( R' p0 `+ Y X
ip1 smallint(3) NOT NULL default '0', Q9 K* [5 i6 K& t7 _
ip2 smallint(3) NOT NULL default '0',
' J+ u |: m6 I( ]5 b ip3 smallint(3) NOT NULL default '0',
9 N1 O7 Y1 h* z- v ip4 smallint(3) NOT NULL default '0',
, C# P3 I: @& y1 Z! {3 z8 M6 k PRIMARY KEY (id),. @' }% M9 \/ I- k
KEY ip1 (ip1),3 I# l, E# b; C j$ V- I* U
KEY ip2 (ip2),
& K0 ^. }) ?7 o5 i' K9 f3 r KEY ip3 (ip3),, e1 A0 G" ?" y8 ~9 e2 w
KEY ip4 (ip1)! t8 t! C# c& s* W9 r; n# v, ]
) TYPE=MyISAM; |