<?php
$stmt = $pdo->prepare("select species, count(species) quantity
from penguins
group by species
order by species desc;");
$stmt->execute();
$rows1 = $stmt->fetchAll(PDO::FETCH_NUM);
$stmt = $pdo->prepare("select species, count(species) quantity
from penguins
group by species
order by species asc;");
$stmt->execute();
$rows2 = $stmt->fetchAll(PDO::FETCH_NUM);
//var_export($rows1);
//var_export($rows2);
sort($rows1);
sort($rows2);
foreach($rows1 as $i=>$r) {
var_export($r);
var_export($rows2[$i]);
var_export($r === $rows2[$i]);
}