You could use grep: 
my %is_available = ( zero => 0, one => 1, two => 2 );

for my $p9 ( grep { $is_available{$_} } keys %is_available ) {
    print $p9;
}

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Unless I state otherwise, all my code runs with strict and warnings

In reply to Re: Foreach syntax by FunkyMonk
in thread Foreach syntax by JimSki

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