Please tell me is if this code string is right

[Nguyen Tuan]

Dear all Pros

I would like my landing page to redirect to website www.A.com for tier 1 countries and website www.B.com for all other countries, so the codes were written like this:

<?php

$a = unserialize(file_get_contents('http://www.geoplugin.net/php.gp?ip='.$_SERVER['REMOTE_ADDR']));

$countrycode= $a['geoplugin_countryCode'];

if (in_array($countrycode, array('us','gb','at','de','ca','ch','fr','it','nl','au','nz','sg','ch')))

    header( 'Location: http://www.A.com' ) ;

else 

    header( 'Location: http://www.B.com' ) ;

?>

But while checking I see that it could not redirect to website www.A.com when visitors from the tier 1 countries visit the landing page. Only the website B was redirect to.

Please help me, tell me what is wrong and how to fix it. Thank you a lot all pros!

[morten.go...@gmail.com]

countrycode is uppercase.