Does something like HTTP_GET_RESPONSE exist?

I was curious about getting the result of this  http://api.hostip.info/country.php?ip=141.100.10.49 (Result = DE) into a variable i can use to write into my DB (last thing is easy for me but i am curious about getting an answer how to do the first thing. beneath the snippet i had in my mind :-) 

<?php
$in = HTTP_GET_RESPONSE('http://api.hostip.info/country.php?ip=141.100.10.49');
echo $in;
/*write to DB*/
?>

thanks for the help in advance!

P.S.: I don't know much about java/python/C(+/++/#)

P.P.S.: http://kater.selfhost.me/stats/test.php that's the result :-(