php中禁止单个ip与ip段访问的代码

php

禁止单个IP

 <?php
 //加IP访问限制
 if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
 $userip = getenv('HTTP_CLIENT_IP');
 } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
 $userip = getenv('HTTP_X_FORWARDED_FOR');
 } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
 $userip = getenv('REMOTE_ADDR');
 } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
 $userip = $_SERVER['REMOTE_ADDR'];
 }
 $banned_ip = array (
 "127.0.0.1",
 "203.0.0.1",
 "56.12.50.65",
 "192.168.1.88"
 );
 if (in_array($userip,$banned_ip))
 {
 die ("Your IP is block to connect !");
 }
 ?>
<html>
<head>
<title>aiboshuo</title>
</head>
<body>
<h1>pdbn.top</h1>
</body>
</html>

禁止IP段

<?php 
//加IP访问限制 
if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) { 
$userip = getenv('HTTP_CLIENT_IP'); 
} elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) { 
$userip = getenv('HTTP_X_FORWARDED_FOR'); 
} elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) { 
$userip = getenv('REMOTE_ADDR'); 
} elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) { 
$userip = $_SERVER['REMOTE_ADDR']; 
} 
$ban_range_low=ip2long("217.0.0.0"); //ip段上 
$ban_range_up=ip2long("217.255.255.255");//ip段尾 
$ip=ip2long($userip]); 
if ($ip>$ban_range_low && $ip<$ban_range_up) 
{ 
print "Banned"; 
exit(); 
} 
?>
<html>
<head>
<title>aiboshuo</title>
</head>
<body>
<h1>pdbn.top</h1>
</body>
</html>