Aside from the typo (missing comma after the first key=>value declaration) the rest of your question would have been answered by using perldoc -q hash, whence came this answer:

#!/usr/bin/perl
use strict;
use warnings;
# 748500

my %hash =('k1'=>'v1','k2'=>'v2','k3'=>'v3');

while ( (my $key, my $value) = each %hash) {
    print "$key = $value\n";
}
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which prints:

k2 = v2
k1 = v1
k3 = v3
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Updates:

• s/command/comma/ in typo description.
• If you want to restore the order, use sort; if you need to retain the order see Tie::IxHash