取得客戶端的IP,$_SERVER["REMOTE_ADDR"]
5 ?1 [' p7 O9 X! X `% C/ C" ]) _IP不在範圍不給訪問。) s* U, p+ l8 g! [6 |* Q. ]1 i
答2:
" a+ q& l3 b- c. g# P e! o限制某個頁面,用樓上的方法.$ w) f6 f$ ^& x; K: F
if(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){
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} else {1 N1 O9 |1 l3 b( N
echo "拒絕訪問";
4 c4 ^. A+ s9 g3 T}
E: W: H& d& D. f----------------
Z9 X8 R# U$ O& n限制整個網站(apache服務器)在httpd.conf中:; ?0 V- a# a' [8 ?1 i; i6 n
deny from all
) }" }( U6 Y4 y8 Q' hallow from 192.168.0.x
- Y, S1 p6 m5 @& E( h q* r答3:
# A% p+ |! f9 W3 ~if(eregi("^192.168.0.",$_SERVER['REMOTE_ADDR'])){ M# H1 f) w% Y/ \+ T
===>if(eregi("^192\.168\.0\.",$_SERVER['REMOTE_ADDR'])){, Y$ {# e% v+ g0 i! i: p
答4:$ f+ c; f! |! T9 m) b" B
function getip()
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if(getenv('HTTP_CLIENT_IP')) $ U0 L* h) M: m# L2 O
{
$ O$ I- K; R$ ~# m+ ^% f $onlineip = getenv('HTTP_CLIENT_IP');1 u1 D/ C4 D7 a" X! W% n* f
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elseif(getenv('HTTP_X_FORWARDED_FOR')) 7 l2 z. |$ {" j( g$ b4 B5 M1 k
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$onlineip = getenv('HTTP_X_FORWARDED_FOR');
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elseif(getenv('REMOTE_ADDR')) ( V# ^# ]! b5 ~) x! P. v2 u, M4 Y
{
5 v. Z, c' ?, h8 m. E6 @8 N e $onlineip = getenv('REMOTE_ADDR');/ Y* A: L8 R8 _/ X( z
} - Q: z. ^5 j* e- }, V( Z A
else 7 s9 F5 ?3 m1 K" M6 O: w9 j
{
: P. R4 q3 e5 f. g2 |9 m, c# q $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
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3 ?+ y6 R- j7 ~ return $onlineip;) h# r6 Z# o: b1 R
}0 }. `; L+ U. ?- k
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- r6 C" n) N; [function estop($ips)7 y: D' `; [4 k+ W
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global $db;0 f% I. E1 T6 v4 e9 w
$ip = explode('.',$ips);
( R8 ~. M& l& T/ h $sql = "select * from ipestop";; t/ F9 J# e f" Y/ ^( l! P7 \
$db->query($sql);% ~% g! B( ]1 k
while ($banned = $db->records())
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$exists = 0;: Z) T/ M; s' l4 A5 k
for($i = 1; $i <= 4; $i++) ( d2 d0 D& e7 N6 S$ R3 x
{
/ B1 l& K R1 \ u if($banned["ip$i"] == -1)
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$exists++;6 a6 ^: k2 T2 s3 U
} 9 [, W4 j5 R* x0 S* J8 Q+ i) K
elseif($banned["ip$i"] == $ip[$i-1])
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$exists++;
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if($exists == 4) ) |0 P; `3 x1 i8 R6 g8 ]4 I0 ?
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die("該IP 已經被禁止訪問!");! h1 g. s& w9 t* Q* Q
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}
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表結構:- [) M3 V# w+ e8 o; c4 n
CREATE TABLE ipestop(% d* V5 H) t+ a! L1 x4 w
id smallint(6) unsigned NOT NULL auto_increment,& N' O1 n4 M4 F9 [
ip1 smallint(3) NOT NULL default '0',
5 f; F% b5 t1 X0 U ip2 smallint(3) NOT NULL default '0',
4 z' w9 E4 o2 _ ip3 smallint(3) NOT NULL default '0',6 ]/ I3 L9 _) a% G& m% f
ip4 smallint(3) NOT NULL default '0',
3 f9 w# J; ?, z; h1 S" ^0 O PRIMARY KEY (id),$ R" ?( w% p$ }! _
KEY ip1 (ip1),
O/ i% c, O$ ~* Q) t: @& t KEY ip2 (ip2),
; i) b' @# W4 o* t( d8 L/ O. R* d. I KEY ip3 (ip3),
; d9 {0 t8 }0 a/ [# g3 a KEY ip4 (ip1)# F, {+ N' p& x/ A$ u
) TYPE=MyISAM; |