Code Snippets Gallery
Get Geo-IP Information
Requests a geo-IP-server to check, returns where an IP is located (host, state, country, town).
<?php
$ip='94.219.40.96';
print_r(geoCheckIP($ip));
//Array ( [domain] => dslb-094-219-040-096.pools.arcor-ip.net [country] => DE - Germany [state] => Hessen [town] => Erzhausen )
//Get an array with geoip-infodata
function geoCheckIP($ip)
{
//check, if the provided ip is valid
if(!filter_var($ip, FILTER_VALIDATE_IP))
{
throw new InvalidArgumentException("IP is not valid");
}
//contact ip-server
$response=@file_get_contents('http://www.netip.de/search?query='.$ip);
if (empty($response))
{
throw new InvalidArgumentException("Error contacting Geo-IP-Server");
}
//Array containing all regex-patterns necessary to extract ip-geoinfo from page
$patterns=array();
$patterns["domain"] = '#Domain: (.*?) #i';
$patterns["country"] = '#Country: (.*?) #i';
$patterns["state"] = '#State/Region: (.*?)<br#i';
$patterns["town"] = '#City: (.*?)<br#i';
//Array where results will be stored
$ipInfo=array();
//check response from ipserver for above patterns
foreach ($patterns as $key => $pattern)
{
//store the result in array
$ipInfo[$key] = preg_match($pattern,$response,$value) && !empty($value[1]) ? $value[1] : 'not found';
}
return $ipInfo;
}
?>
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You should consider caching results too as it will speed it up considerably.
For small low traffic websites it won’t be too bad but if your expecting to grow it’s something you must look into now. You should also consider that you are relying on the website being up and returning data in a specific way so the regexes could become outdated or broken in the future.
Just some things to consider.
I really needed this, thanks!
What would be the best method of getting the users IP address to use with this?
$_SERVER['REMOTE_ADDR']
So, you could call the function like this:
$ip=$_SERVER['REMOTE_ADDR'];
geoCheckIP($ip);
I wish I had seen this about 6 months ago… it works brilliantly! I’m going to put it to work on loads of websites right now!
I have been playing and thought this might be useful too… it allows you to redirect or echo a silly statement depending on the user’s location:
$my_array=geoCheckIP($ip);foreach ($my_array as $key => $value){
if($key=='country'){
#switch on the country:
switch ($value) {
case 'GB - United Kingdom':
echo "You are visiting from the UK! We love the british!";
break;
case 'NZ - New Zealand':
echo "You're visiting from New Zealand. What's the weather like down under?";
break;
case 'US - United States':
echo "You're visiting from The USA. It must be nice to be in the home of the brave. I'd love to go, but I'm too scared!";
break;
case 'CA - Canada':
echo "You're visiting from Canada. Is it snowing?";
break;
case 'AU - Australia':
echo "You're visiting from Australia. Does the blood rush to your head?";
break;
}
echo '
'.$key.': '.$value;
}
}