First build a database table:
CREATE TABLE `su_lockip` (
`id` int(4) NOT NULL auto_increment,
`lockip` varchar(1024) default NULL,
PRIMARY KEY (`id`)
)
Second, design a page so that you can add the ip you want to ban, every ip is devided by |, I only write the mail part:
$UlockIp=$_POST[’z']?$_POST[’z']:”;
if(empty($UlockIp)){
exit(”<script>alert(’Sorry, the message your input is wrong!’);history.back();</script>”);
}
$sql=”update su_lockip set lockip=’$UlockIp’”;
if(mysql_query($sql)){
exit(”<script>alert(’Locked succesfully!’);history.back();</script>”);
}else{
exit(”<script>alert(’Sorry, the message your input is wrong!’);history.back();</script>”);
}
Last, check the ip is in the database or not, if in the database, then show killed.
function lock_user_ip(){
$Usql =mysql_query(”select * from su_lockip”);
$Urs =mysql_fetch_array($Usql);
$UlockIp=$Urs[’lockip’];
$ClockIp=$this->get_real_ip();
$Iplist =explode(’|',$UlockIp);
if(in_array($ClockIp,$Iplist)){
exit(’sorry system lock your IP’);
}
}
function get_real_ip(){
$ip=false;
if(!empty($_SERVER[”HTTP_CLIENT_IP”])){
$ip = $_SERVER[”HTTP_CLIENT_IP”];
}
if (!empty($_SERVER[’HTTP_X_FORWARDED_FOR’])) {
$ips = explode (”, “, $_SERVER[’HTTP_X_FORWARDED_FOR’]);
if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
for ($i = 0; $i < count($ips); $i++) {
if (!eregi (”^(10|172\.16|192\.168)\.”, $ips[$i])) {
$ip = $ips[$i];
break;
}
}
}
return ($ip ? $ip : $_SERVER[’REMOTE_ADDR’]);
}