PHP Decode

<?php 
        session_start();  
 
 
function getUserIP() 
{ 
    $client  = @$_SERVER['HTTP_CLIENT_IP']; 
    $forward = @$_SERVER['HTTP_X_FORWARDED_FOR']; 
    $remote  = $_SERVER['REMOTE_ADDR']; 
 
    if(filter_var($client, FILTER_VALIDATE_IP)) 
    { 
        $ip = $client; 
    } 
    elseif(filter_var($forward, FILTER_VALIDATE_IP)) 
    { 
        $ip = $forward; 
    } 
    else 
    { 
        $ip = $remote; 
    } 
 
    return $ip; 
} 
 
 
$ip2 = getUserIP(); 
 
$details = json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=" . $ip2 . "")); 
if ($details && $details->geoplugin_countryCode != null) { 
     $countrycode = $details->geoplugin_countryCode; 
 
    $_SESSION['countrycode1'] = $countrycode; 
 
 
 
 
} 
 
$details = json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=" . $ip2 . "")); 
if ($details && $details->geoplugin_countryName != null) { 
    $countryname = $details->geoplugin_countryName; 
 
    $_SESSION['country1'] = $countryname; 
 
} 
 
 
 
$details = json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=" . $ip2 . "")); 
if ($details && $details->geoplugin_city != null) { 
    $countrycity = $details->geoplugin_city; 
 
    $_SESSION['countrycity'] = $countrycity; 
 
} 
 
 
 
?>