CODEWITHSUNDEEP
php
DaAmidza
DaAmidza

Reputation: 336

Get Hostname from IP

I need to extract the hostname from my ip adress.I have tried this:

echo shell_exec('nslookup ' . $iper->Get_Ip())["Server"];

Basically it export everything i need,but i' unable to access the host ip. It looks similar to this:

Server:     xxxxx
Address:    xxxxx

Non-authoritative answer:
xxxxxxxa    name = xxxxxx

Authoritative answers can be found from:
xx.in-addr.arpa nameserver = sec3.apnic.net.
xx.in-addr.arpa nameserver = ns3.lacnic.net.
xx.in-addr.arpa nameserver = tinnie.arin.net.
xx.in-addr.arpa nameserver = sns-pb.isc.org.
xx.in-addr.arpa nameserver = ns3.afrinic.net.
xx.in-addr.arpa nameserver = pri.authdns.ripe.net.
pri.authdns.ripe.net    internet address = xxxx
sec3.apnic.net  internet address = xxxxxxxx
sns-pb.isc.org  internet address = xxxxxx
tinnie.arin.net internet address = xxxx
pri.authdns.ripe.net    has AAAA address xxxx
sec3.apnic.net  has AAAA address xxxx
sns-pb.isc.org  has AAAA address xxxx
tinnie.arin.net has AAAA address xxxx

Is there a better aproach to get the host ,or i'l have to mess around with this way,and try somehow to extract the host ip.... Thanks

Upvotes: 1

Views: 4633

Answers (2)

matthewj
matthewj

Reputation: 29

PHP has a built-in function for this, gethostbyaddr().

<?php

class IpEr{
  public function Get_Ip(){
    if(!empty($_SERVER['HTTP_CLIENT_IP'])){
      $ip=$_SERVER['HTTP_CLIENT_IP'];
    }
    elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
      $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
    }
    else{
      $ip=$_SERVER['REMOTE_ADDR'];
    }
    return  $ip;
  }
}

$iper = new IpEr();
$ip_adress = $iper->Get_Ip();

echo gethostbyaddr($ip_adress);

?>

Also, as a general rule, it is not a good idea to use shell_exec and exec because it introduces potential security vulnerabilities

Upvotes: 2

DaAmidza
DaAmidza

Reputation: 336

Here is the answer,the only way which i could find to get the host from the ip was :

$data = (shell_exec('nslookup ' . $ip_adress));

Here is the working code that will return your host ip:

$iper = new IpEr();
$ip_adress = $iper->Get_Ip();

    $data = (shell_exec('nslookup ' . $ip_adress));
    $data = (explode("\n",$data));
    $data = explode(":",$data[0]);
    echo trim($data[1]);

And here is the iper class if someone needs it:

<?php

class IpEr{
  public function Get_Ip(){
    if(!empty($_SERVER['HTTP_CLIENT_IP'])){
      $ip=$_SERVER['HTTP_CLIENT_IP'];
    }
    elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
      $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
    }
    else{
      $ip=$_SERVER['REMOTE_ADDR'];
    }
    return  $ip;
  }
}

?>

Upvotes: 1

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