Introduction
In case we want to identify visitors only from US (or a different
country), downloading all the information in our database may be a
waste of time and resources. That is why we have created a set of
databases for specific country identification.
We have faced this problem in two ways:
| For UNITED STATES, UNITED
KINGDOM, GERMANY, FRANCE and NETHERLANDS, download the databases in the
table. |
Use this databases instead
of the general database with
all countries when you want to
identify visitors from these countries. Decompress the file and save
all content within a directory named "ip_files".
There are a lot of IP
ranges for each of those countries. In case
a unique file is generated for countries in this list, the size of the
file will be over 100 Kb. Requesting this long file with lots of IP
ranges and searching it each time a visitor gets to our site will not
be very efficient. That is why we are providing these spleeted
databases.
The following script may be used as a reference to identify visitors
from United States and to respond to them with specific content:
<?
$IPaddress=$_SERVER['REMOTE_ADDR'];
$two_letter_country_code=iptocountry($IPaddress);
if
($two_letter_country_code=="US"){
include("This_file_for_US_visitors.html");
die();
}else{
include("This_file_for_other_countries.html");
die();
}
function iptocountry($ip) {
$numbers = preg_split( "/\./",
$ip);
include("ip_files/".$numbers[0].".php");
$code=($numbers[0] * 16777216) + ($numbers[1] *
65536) + ($numbers[2] * 256) + ($numbers[3]);
foreach($ranges as $key => $value){
if($key<=$code){
if($ranges[$key][0]>=$code){$two_letter_country_code=$ranges[$key][1];break;}
}
}
if
($two_letter_country_code==""){$two_letter_country_code="unkown";}
return $two_letter_country_code;
}
?> |
|
For countries not included in the list
above, select country in the form and get the file with IP ranges.
|
When identifying countries in the list, download corresponding
database. After selection
of the country, copy the content in the textarea to a
file named
" ip_database.php".
For countries in the list, number of IP ranges is not very big. That
is why we are including all IP ranges in an unique file. Country
identification will be efficient enought for all countries.
The following script may be used as a reference to identify visitors
from Spain (ES) and to respond to them with specific content:
<?
$IPaddress=$_SERVER['REMOTE_ADDR'];
$two_letter_country_code=iptocountry($IPaddress);
if ($two_letter_country_code=="ES"){
include("This_file_for_ES_visitors.html");
die();
}else{
include("This_file_for_other_countries.html");
die();
}
function iptocountry($ip) {
$numbers = preg_split( "/\./",
$ip);
include("ip_database.php");
$code=($numbers[0] * 16777216) + ($numbers[1] *
65536) + ($numbers[2] * 256) + ($numbers[3]);
foreach($ranges as $key => $value){
if($key<=$code){
if($ranges[$key][0]>=$code){$two_letter_country_code=$ranges[$key][1];break;}
}
}
if
($two_letter_country_code==""){$two_letter_country_code="unkown";}
return $two_letter_country_code;
}
?> |
|
|
