<分区>
$pdo = $db->prepare('SELECT * FROM animals WHERE id = :id ');
$pdo->execute(array('id' => $id));
while ($row = $pdo->fetch(PDO::FETCH_ASSOC)) {
$name = $row["name"];
echo $name."<br>";
}
我的循环结果现在是-
cat
cat
cat
cat
dog
bird
我想对相似的结果进行分组,所以我得到这样的结果-
cat
dog
bird