This rather defeats the point of OO arch. Presumbably you want to do this:

$obj->{attibute}
# instead of
$obj->get_attribute();
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Which given that most object are just blessed hashes you can do right now.....

package Foo;
use Data::Dumper;

my $o = new Bar;
print $o->get_attribute(), $/;
print $o->set_attribute('new val'), $/;
print $o->set_flubber('dubber'), $/;
print "Direct access, interpolated get flubber = $o->{flubber}\n";
print $o->no_exist();
print Dumper $o;

package Bar;

sub new{ return bless { attribute => 'value' }, shift }

sub AUTOLOAD {
    my $self = shift;
    my ( $func ) = $AUTOLOAD =~ m/::([^:]+)$/;
    if ( $func =~ s/^set_// ) {
        return $self->{$func} = shift;
    }
    elsif ( $func =~ s/^get_// ) {
        return exists $self->{$func} ? $self->{$func} : undef;
    }
    else {
        my @caller = caller();
        warn "Non existant function $func() called by:\n@caller\n";
        return 0;
    }
}

sub DESTROY{}
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