Hi all, I have a PERL script in which I do the following: -call a subroutine to do some file initialization and stuff - return -initialize a hash (%hashname = (); ) -call a subroutine, passing a reference to the hash. In the subroutine I parse a bunch of data and eventually write to the hash thusly: $$hashname{$key1}{$key2}{$key3}{$key4} = $value; - call a second subroutine, passing a reference to the hash to it. Here's where the trouble starts..... Here's my subroutine: 
sub GEN_HTML {                                                        
+                  # generate HTML for form
    $mp3hash = shift;                                                 
+                  # hash - parsed xml itunes data
    #print Dumper(\%{$mp3hash});
    foreach $player (sort keys %{$mp3hash}) {
        foreach $collection (sort keys %{$mp3hash{$player}}) {
print "DEBUG: the player is [$player] the collection is [$collection]\
+n";
            foreach $thetrack ( sort keys %{$mp3hash{$player}{$collect
+ion}}) {
                foreach $bute ( sort keys %{$mp3hash{$player}{$collect
+ion}{$track_name}}) {
                    print "$player - $collection - $thetrack - $mp3has
+h{$player}{$collection}{$track_name}{$bute}\n";
                }
            }
        }
    }
return;
}

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If I uncomment the Dumper line, I get the expected data structure and data. If I put a print statement after the first foreach and print $player, I get the data I expect, however, I cannot get any of the data from the inner foreach loops to print. I'm pretty sure I just haven't figure out how to properly de-reference the keys in the inner loops, but I can't seem to figure out how to do this.... Oh, and if I put these loops up in main, everything works fine..... Any help? Thanks, bigtiny

In reply to Cannot dereference hash in subroutine.... by bigtiny

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