Hello perl-brain, I'm very confused about what seems to be a fairly straight-forward thing. My goal is to get a count of hits per minute from apache httpd access logs.

The code speaks louder than my words:

...
while (<FILE>) {
   my $line=$_;
   (my $day,$month,$year,$hour,$minute) = ( $line =~ /^.*\[(\d*)\/(.*)
+\/(\d*):(\d*):(\d*).*$/);
   if ( defined $topHash{$year}{$month}{$day}{$hour}{$minute} ) {
      $minuteCounter=$topHash{$year}{$month}{$day}{$hour}{$minute};
      $minuteCounter++;
      $topHash{$year}{$month}{$day}{$hour}{$minute}=$minuteCounter;
   } else {
      $topHash{$year}{$month}{$day}{$hour}{$minute}=1;
      $minuteCounter=$topHash{$year}{$month}{$day}{$hour}{$minute};
   }
}
close(FILE);
foreach my $ryear ( sort keys %topHash ) {
   foreach my $rmonth ( sort keys %{$topHash{$ryear}} ) {
      foreach my $rday ( sort keys %{$topHash{$ryear}{$rmonth}} ) {
         foreach my $rhour ( sort keys %{$topHash{$ryear}{$rmonth}{$rd
+ay}} ) {
            foreach my $rminute ( sort keys %{$topHash{$ryear}{$rmonth
+}{$rday}{$rhour}} ) {
               print "\"$ryear\"\t\"$rmonth\"\t\"$rday\"\t\"$rhour\"\t
+\"$rminute\"\t";
               print "\"$topHash{'$ryear'}{'$rmonth'}{'$rday'}{'$rhour
+'}{'$rminute'}\"\n";
            }
         }
      }
   }
}

[download]

The output looks something like this:
"2010"  "Feb"   "11"    "00"    "03"    ""

but, if I put this at the bottom of the script:
print "$topHash{'2010'}{'Feb'}{'11'}{'00'}{'03'}\n";
I get the correct result, in case of my test file:
3

What in the world is wrong with this?
print "\"$topHash{'$ryear'}{'$rmonth'}{'$rday'}{'$rhour'}{'$rminute'}\"\n";
and why oh why will it not work.

advTHANKSance!

-Eric

In reply to hash of hash of hash of hash of hash... by elofland

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