pass variables from php to cgi

[volant]

Hi all,
I m doing on passing variables from php to cgi
I've tried some methods already but it didnt work.

1. Header function:-

header("Location:http://myserver/myfile.php?a=$a&b=$b");

Then in my cgi script:-

if ( $ENV{QUERY_STRING} )
{
my $buffer = $ENV{QUERY_STRING};
my %QUERY_STRING;
if ( length($buffer ) > 0 )
{
my @pairs = split(/&/, $buffer);
foreach my $pair (@pairs)
{
my ($name, $value) = split(/=/, $pair);
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
$QUERY_STRING{$name} = $value;
}
}
$a= $QUERY_STRING{a};

$b_id = $QUERY_STRING{b};

}

I used query string to receive the values but nothing.

2. Then second i used curl to pass values:-
   $ch = curl_init("http://myserver/myfile.cgi"); // initialize curl handle
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // return into a variable
   curl_setopt($ch, CURLOPT_POSTFIELDS, "a=$a&b=$b"); // add POST fields
   $Response = curl_exec($ch);
   curl_close($ch);
   echo $Response;

Both i used query string but received nothing.
One thing which funny is that:
in curl, if i change url to www.google.com and else which got 'www' at front, i can read the response.

I m doing on the test server, without www at front of my url, but would that be the problem for me couldnt use CURL?
please help and welcome every suggestions!

[volant]

then this is what i've found:
i could pass the variables using header function, via browser, couldnt work at the backend. I will receive the status 302 if i do so.
then i search for info on the net:

The requested resource resides temporarily under a different URI. Since the redirection might be altered on occasion, the client SHOULD continue to use the Request-URI for future requests. This response is only cacheable if indicated by a Cache-Control or Expires header field.

The temporary URI SHOULD be given by the Location field in the response. Unless the request method was HEAD, the entity of the response SHOULD contain a short hypertext note with a hyperlink to the new URI(s).

forgive my limited english, i dont much understand what it is saying, or i couldnt use header function besides browser???!!
please, i need your suggestion!