PHP之获取终端用户IP

//

function get_real_ip()

{

$ip=false;

$clientip = "clientip";

$xrealip = "xrealip";

$userip ='userip';

$fwip ='fwip';

$aliip = 'aliip';

$forwardedip ='forwardedip';

if(isset($_SERVER["HTTP_CLIENT_IP"]) && !empty($_SERVER['HTTP_CLIENT_IP']) && !preg_match("/^(10|172.16|192.168)./i",$_SERVER['HTTP_CLIENT_IP']) && $_SERVER["HTTP_CLIENT_IP"]!='118.26.171.83' && $_SERVER["HTTP_CLIENT_IP"]!='118.26.171.84')

{

$ip = $_SERVER["HTTP_CLIENT_IP"];

$clientip = $_SERVER["HTTP_CLIENT_IP"];

}

else if(isset($_SERVER["HTTP_X_REAL_IP"]) && !empty($_SERVER['HTTP_X_REAL_IP']) && !preg_match("/^(10|172.16|192.168)./i",$_SERVER['HTTP_X_REAL_IP']) && $_SERVER["HTTP_X_REAL_IP"]!='118.26.171.83' && $_SERVER["HTTP_X_REAL_IP"]!='118.26.171.84')

{

$ip = $_SERVER['HTTP_X_REAL_IP'];

$xrealip = $_SERVER["HTTP_X_REAL_IP"];

}

else if(isset($_SERVER["HTTP_USER_IP"]) && !empty($_SERVER['HTTP_USER_IP']) && !preg_match("/^(10|172.16|192.168)./i",$_SERVER['HTTP_USER_IP']) && $_SERVER["HTTP_USER_IP"]!='118.26.171.83' && $_SERVER["HTTP_USER_IP"]!='118.26.171.84')

{

$ip = $_SERVER['HTTP_USER_IP'];

$userip =$_SERVER['HTTP_USER_IP'];

}

else if(isset($_SERVER["HTTP_FW_ADDR"]) && !empty($_SERVER['HTTP_FW_ADDR']) && !preg_match("/^(10|172.16|192.168)./i",$_SERVER['HTTP_FW_ADDR']) && $_SERVER["HTTP_FW_ADDR"]!='118.26.171.83' && $_SERVER["HTTP_FW_ADDR"]!='118.26.171.84')

{

$ip = $_SERVER['HTTP_FW_ADDR'];

$fwip = $_SERVER["HTTP_FW_ADDR"];

}

else if(isset($_SERVER["HTTP_ALI_CDN_REAL_IP"]) && !empty($_SERVER['HTTP_ALI_CDN_REAL_IP']) && !preg_match("/^(10|172.16|192.168)./i",$_SERVER['HTTP_ALI_CDN_REAL_IP']) && $_SERVER["HTTP_ALI_CDN_REAL_IP"]!='118.26.171.83' && $_SERVER["HTTP_ALI_CDN_REAL_IP"]!='118.26.171.84')

{

$ip = $_SERVER['HTTP_ALI_CDN_REAL_IP'];

$aliip = $_SERVER["HTTP_ALI_CDN_REAL_IP"];

}

if(isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']))

{

$ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);

if ($ip)

{

array_push($ips, $ip);

$ip = FALSE;

}

for ($i = 0; $i < count($ips); $i++)

{

if (isset($ips[$i]) && !preg_match("/^(10|172.16|192.168)./i", $ips[$i]) && $ips[$i]!='118.26.171.83' && $ips[$i]!='118.26.171.84')

{

$ip = $ips[$i];

break;

}

}

$forwardedip = $_SERVER['HTTP_X_FORWARDED_FOR'];

}

    return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
}