foreach $file(@filenames){
open FILE, "$file";
while (<FILE>){
$array1 =();
$array2 = ();
#fill @array1;
array1_ref = \@array1;
#fill @array2;
array2_ref = \@array2;
}
$hash{$file} = [$array2_ref, $array1_ref]
)

#accessing the info:
print @$hash{$somefile}[1];