Php Geoplugin无法正常工作？

Question

I have followed all the directions given at:

http://www.geoplugin.com/webservices/php

Yet my nothing is popping up the page is just blank ( Yes I have it uploaded on my online sever )

<?php
$user_ip = getenv('REMOTE_ADDR');
$geo = unserialize(file_get_contents("http://www.geoplugin.net/php.gp?ip=$user_ip"));
$city = $geo["geoplugin_city"];
$region = $geo["geoplugin_regionName"];
$country = $geo["geoplugin_countryName"];
echo "City: ".$city."<br>";
echo "Region: ".$region."<br>";
echo "Country: ".$country."<br>";
?>

The only thing that pops up is this

City:

Region:

Country:

With no answers. Help?

Answer 1

Just try

$geo = unserialize(file_get_contents("http://www.geoplugin.net/php.gp?ip=".$user_ip));