$ipAddresses= 'ip-addresses.txt';\r\n$cidrs = file($ipAddresses, FILE_IGNORE_NEW_LINES);<\/pre>\n <\/p>\n
Step-3<\/h2>\n
Get visitor IP address.<\/p>\n
$user_ip = $_SERVER['REMOTE_ADDR']; \/\/ get user ip<\/pre>\n <\/p>\n
Step-4<\/h2>\n
Then you need to pass visitor IP address and read IP addresses list as parameters to following function.It will return IP address is exist or not.<\/p>\n
\r\nfunction checkUserIP($user_ip, $cidrs) {\r\n $ipu = explode('.', $user_ip);\r\n foreach ($ipu as => $v)\r\n $v = str_pad(decbin($v), 8, '0', STR_PAD_LEFT);\r\n $ipu = join('', $ipu);\r\n $res = false;\r\n foreach ($cidrs as $cidr) {\r\n $parts = explode('\/', $cidr);\r\n $ipc = explode('.', $parts[0]);\r\n foreach ($ipc as => $v)\r\n $v = str_pad(decbin($v), 8, '0', STR_PAD_LEFT);\r\n $ipc = substr(join('', $ipc), 0, $parts[1]);\r\n $ipux = substr($ipu, 0, $parts[1]);\r\n $res = ($ipc === $ipux);\r\n if ($res) break;\r\n }\r\n return $res;\r\n}<\/pre>\n <\/p>\n
Step-5<\/h2>\n
Finally get response from above function and redirect them.<\/p>\n
\/\/ checking user ip address redirect \r\nif (checkUserIP($user_ip, $cidrs)) { \r\n echo 'IP Address is - '.$user_ip.' Your ip is checked and that is exist in the black list.'; \r\n} else { \r\n echo 'Access denied this ip-'.$user_ip; \r\n}<\/pre>\n <\/p>\n
<\/p>\n