I'm doing a very simple task, loading a file into a hash. The file is a basic zip-code table: 
00601PR787ADJUNTAS
00602PR787AGUADA
00603PR787AGUADILLA
00604PR787AGUADILLA
00605PR787AGUADILLA
00606PR787MARICAO
00610PR787ANASCO
00611PR787ANGELES
00612PR787ARECIBO
00613PR787ARECIBO

[download]
And the code is pretty straight-forward: 
$count = 0;

open (ZIPCODE, "<../Files/ZipCodes.txt") or die "Cannot open ZipCode: 
+$1\n";

while (<ZIPCODE>)
    {
    chomp;
    ($Zip) = substr($_,0,5);
    ($State) = substr($_,5,2);
    ($AreaCode) = substr($_,7,3);
    ($City) = substr($_,10);
    $ZipDB{$Zip} = "$City|$State|$AreaCode";
    $count++;
    }
print "\nStored: $count\n";

$count = 0;
foreach $Zip (%ZipDB)
    {
    print "$Zip = [$ZipDB{$Zip}]\n";
    $count++;
    }

close (ZIPCODE);
print "\n$count Zip codes found\n";

[download]
When the "foreach" loop runs I get 20 records listed instead of 10: 
Stored: 10
00611 = [ANGELES|PR|787]
ANGELES|PR|787 = []
00612 = [ARECIBO|PR|787]
ARECIBO|PR|787 = []
00603 = [AGUADILLA|PR|787]
AGUADILLA|PR|787 = []
00610 = [ANASCO|PR|787]
ANASCO|PR|787 = []
00606 = [MARICAO|PR|787]
MARICAO|PR|787 = []
00601 = [ADJUNTAS|PR|787]
ADJUNTAS|PR|787 = []
00602 = [AGUADA|PR|787]
AGUADA|PR|787 = []
00605 = [AGUADILLA|PR|787]
AGUADILLA|PR|787 = []
00613 = [ARECIBO|PR|787]
ARECIBO|PR|787 = []
00604 = [AGUADILLA|PR|787]
AGUADILLA|PR|787 = []

20 Zip codes found

[download]
I am at a total loss as to why this is not working. Mike

In reply to Odd hash problem by wpahiker

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