First of all, when you push a hash onto an array like that, you are creating an array of the hash contents so that each key and each value are one element of the array. Your %temphash is being assigned the value of the first key, hence the odd number message. See:
%foo = (
a => 1,
b => 2,
c => 3,
);
push @bar, %foo;
print $bar[0], "\n";
What you need to do is push a hash reference, i.e.
push @bar, \%foo onto the array and then use that value:
for my $foo (@bar) {
print keys (%$foo), "\n";
}
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