PDO和MySql只输出一行一行

Question

When selecting and displaying records using php's PDO and MySql, how can I print one row once and loop through the rest? In the code below, I need to print $row['parentName'] only once, and loop through all the other row. What is an efficient way to do it? The way I'm doing it does not work and I get Notice: Undefined variable: row in C:\web\apache\htdocs\index.php on line 227.

I don't mind taking a whole new approach, since this isn't implemented yet.

$stmt = $conn->prepare($sql);
$stmt->execute($thisArray);
    $rows = $stmt->rowCount();
        if($rows >= 1) {
            echo '<div>'.$row['parentName'].'</div>'; //Echo only once.
            while($row = $stmt->fetch()) {
                echo '<div>'.$row['childName'].'</div>';
            }
        } else {
            echo 'We could not find anything to display.';
        }

EDIT I'm stuck at the fetch part.

Answer 1

Try this:

$stmt = $conn->prepare($sql);
$stmt->execute($thisArray);
if ($stmt->rowCount() >= 1) {
    $array = $stmt->fetchAll();
    echo '<div>', $array[0]['parentName'], '</div>';
    foreach ($array as $row) {
        echo '<div>', $row['childName'], '</div>';
    }
} else {
    echo 'We could not find anything to display.';
}