How to print “public” IP address of website you are on?

Question

So far I have tried:

echo gethostbyname(gethostname());

But this give me the "local" IP (not sure if that's the right term) 127.0.0.1 , whereas I want the "public" IP address.

Eg, for the website stackoverflow.com I get 151.101.193.69 when using the website service https://ipinfo.info ... that is what I am looking for.

Answer 1

Use this code,

function getIPAddress() {  
 //whether ip is from the share internet
 if(!empty($_SERVER['HTTP_CLIENT_IP'])) {  
            $ip = $_SERVER['HTTP_CLIENT_IP'];  
    }  
 //whether ip is from the proxy 
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {  
            $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];  
 }  
//whether ip is from the remote address 
else{  
         $ip = $_SERVER['REMOTE_ADDR'];  
 }  
 return $ip;  

}

Answer 2

gethostbyname("example.com"); returns a IPv4 of specified server/domain

more on that: https://www.w3schools.com/php/func_network_gethostbyname.asp

So to get the external IP of your server you have to specify the domain name, because gethostname() will return local IP address