Get the real ip address even when they are using Proxy.
PHP
function getRealIpAddr() { if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet { $ip=$_SERVER['HTTP_CLIENT_IP']; } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy { $ip=$_SERVER['HTTP_X_FORWARDED_FOR']; } else { $ip=$_SERVER['REMOTE_ADDR']; } return $ip; }
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to make use of built-in syntax highlighter.function ip()
{
if(isset($_SERVER['HTTP_CLIENT_IP']) && $_SERVER['HTTP_CLIENT_IP']) return $_SERVER['HTTP_CLIENT_IP'];
if(isset($_SERVER['HTTP_X_FORWARDED_FOR']) && $_SERVER['HTTP_X_FORWARDED_FOR']) return $_SERVER['HTTP_X_FORWARDED_FOR'];
if(isset($_SERVER['HTTP_X_FORWARDED']) && $_SERVER['HTTP_X_FORWARDED']) return $_SERVER['HTTP_X_FORWARDED'];
if(isset($_SERVER['HTTP_FORWARDED_FOR']) && $_SERVER['HTTP_FORWARDED_FOR']) return $_SERVER['HTTP_FORWARDED_FOR'];
if(isset($_SERVER['HTTP_FORWARDED']) && $_SERVER['HTTP_FORWARDED']) return $_SERVER['HTTP_FORWARDED'];
if(isset($_SERVER['HTTP_X_COMING_FROM']) && $_SERVER['HTTP_X_COMING_FROM']) return $_SERVER['HTTP_X_COMING_FROM'];
if(isset($_SERVER['HTTP_COMING_FROM']) && $_SERVER['HTTP_COMING_FROM']) return $_SERVER['HTTP_COMING_FROM'];
if(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR']) return $_SERVER['REMOTE_ADDR'];
return '';
}
function get_ip_address()
{
$header_checks = array(
'HTTP_CLIENT_IP',
'HTTP_PRAGMA',
'HTTP_XONNECTION',
'HTTP_CACHE_INFO',
'HTTP_XPROXY',
'HTTP_PROXY',
'HTTP_PROXY_CONNECTION',
'HTTP_VIA',
'HTTP_X_COMING_FROM',
'HTTP_COMING_FROM',
'HTTP_X_FORWARDED_FOR',
'HTTP_X_FORWARDED',
'HTTP_X_CLUSTER_CLIENT_IP',
'HTTP_FORWARDED_FOR',
'HTTP_FORWARDED',
'ZHTTP_CACHE_CONTROL',
'REMOTE_ADDR'
);
foreach ($header_checks as $key)
if (array_key_exists($key, $_SERVER) === true)
foreach (explode(',', $_SERVER[$key]) as $ip)
{
$ip = trim($ip);
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false)
return $ip;
}
}
http://www.kmbytes.com/blog/how-to-get-clients-ip-of-the-users-that-visit-your-website/