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php中禁止单个IP与ip段访问的代码小结

　　本文标签：单个IP,ip段

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 !");
}
echo "脚本之家测试";
?>
禁止IP段
复制代码 代码如下:

<?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();
}
?>