//ip 2018-4-6
function getonlineip(){
if($_SERVER["HTTP_CLIENT_IP"])
{
$onlineip=$_SERVER["HTTP_CLIENT_IP"]; //IP
}
else if($_SERVER["HTTP_X_FORWARDED_FOR"])
{
$onlineip=$_SERVER["HTTP_X_FORWARDED_FOR"]; //IP
}
else
{
$onlineip=$_SERVER["REMOTE_ADDR"]; //IP
}
return $onlineip;
}
function ip() {
//strcasecmp 0>0<0
if(getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) {
$ip = getenv("HTTP_CLIENT_IP");
} elseif(getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) {
$ip = getenv("HTTP_X_FORWARDED_FOR");
} elseif(getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) {
$ip = getenv("REMOTE_ADDR");
} elseif(isset($_SERVER["REMOTE_ADDR"]) && $_SERVER["REMOTE_ADDR"] && strcasecmp($_SERVER["REMOTE_ADDR"], "unknown")) {
$ip = $_SERVER["REMOTE_ADDR"];
}
$res = preg_match ( "/[\d\.]{7,15}/", $ip, $matches ) ? $matches [0] : "";
return $res;
//dump(phpinfo());//PHP
}
//ip
function real_ip(){
static $realip;
if ($realip !== NULL) {
return $realip;
}
if (isset($_SERVER)) {
if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])) {
$arr = explode(",", $_SERVER["HTTP_X_FORWARDED_FOR"]);
foreach ($arr as $ip) {
$ip = trim($ip);
if ($ip != "unknown") {
$realip = $ip;
break;
}
}
}
else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
$realip = $_SERVER["HTTP_CLIENT_IP"];
}
else if (isset($_SERVER["REMOTE_ADDR"])) {
$realip = $_SERVER["REMOTE_ADDR"];
}
else {
$realip = "0.0.0.0";
}
}
else if (getenv("HTTP_X_FORWARDED_FOR")) {
$realip = getenv("HTTP_X_FORWARDED_FOR");
}
else if (getenv("HTTP_CLIENT_IP")) {
$realip = getenv("HTTP_CLIENT_IP");
}
else {
$realip = getenv("REMOTE_ADDR");
}
preg_match("/[\\d\\.]{7,15}/", $realip, $onlineip);
$realip = (!empty($onlineip[0]) ? $onlineip[0] : "0.0.0.0");
return $realip;
}3 functions
access the private network through the natapp public network domain name