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<?php $arr = [ 0 => 1, 1 => 2, 2 => 1, 3 => 2, 4 => 8, 5 => 7, 6 => 6, 7 => 6, 8 => 6, 9 => 5, 10 => 8, 11 => 4, 12 => 1, 13 => 1, 14 => 1, 15 => 1 ]; $items = array_slice(array_unique(array_reverse($arr)), 0, 5); print_r($res);
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