Perhaps this is what you want: 
foreach my $num (@tokens) {
    my $strBegin = uc substr($num, 0, 3);
    $date = $months{$strBegin} if exists $months{$strBegin};  
}

[download]

I don't know what data you're processing, but this method doesn't look reliable.

In reply to Re: A quick date swap from a string by zwon
in thread A quick date swap from a string by Quicksilver

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