I was getting a php error on a larger script., so I pared it down to the simplest possible case, as follows
$country = $_GET['country'];
I get this error:
Notice: Undefined index: country in /home/rkassoc/public_html/Lakos/test.php on line 4
I can't do a $_GET['var'] ??
You can try it yourself at rkassoc.org/Lakos/test.php