get Country from IP in PHP

<?php
function countryCityFromIP($ipAddr)
{
//function to find country and city name from IP address
//Developed by Roshan Bhattarai
//Visit http://roshanbh.com.np for this script and more.

//verify the IP address for the
ip2long($ipAddr)== -1 || ip2long($ipAddr) === false ? trigger_error(“Invalid IP”, E_USER_ERROR) : “”;
// This notice MUST stay intact for legal use
$ipDetail=array(); //initialize a blank array
//get the XML result from hostip.info
$xml = file_get_contents(“http://api.hostip.info/?ip=”.$ipAddr);
//get the city name inside the node <gml:name> and </gml:name>
preg_match(“@<Hostip>(\s)*<gml:name>(.*?)</gml:name>@si”,$xml,$match);
//assing the city name to the array
$ipDetail['city']=$match[2];
//get the country name inside the node <countryName> and </countryName>
preg_match(“@<countryName>(.*?)</countryName>@si”,$xml,$matches);
//assign the country name to the $ipDetail array
$ipDetail['country']=$matches[1];
//get the country name inside the node <countryName> and </countryName>
preg_match(“@<countryAbbrev>(.*?)</countryAbbrev>@si”,$xml,$cc_match);
$ipDetail['country_code']=$cc_match[1]; //assing the country code to array
//return the array containing city, country and country code
return $ipDetail;
}

$ip = $_SERVER['REMOTE_ADDR'];

$outip = “122.173.29.180″;
$IPDetail=countryCityFromIP(’122.173.29.180′);
echo $IPDetail['country']; //country of that IP address
echo $IPDetail['city']; //outputs the IP detail of the city
?>