打印出数组值两次/ php和pdo

Question

我两次获得"$ field_value" - 但为什么？正常的结构是:<id><name><address><email>但现在我得到了<id><id><name><name><address><address><email><email>

这是代码:

 <tbody>

        <?php
        $STH = $DBH->prepare("SELECT * FROM kunden");
        $STH->execute();
        $result = $STH->fetchall();

        foreach($result as $key => $inner_arr) {
            echo '<tr>';
            foreach($inner_arr as $field_name => $field_value) {
                echo "<td>{$field_value}</td>";
            }
            echo '</tr>';
        }

        ?>

</tbody>

Answer 1

你需要设置fetchMode:

默认为PDO::FETCH_BOTH,因此将返回由列名和数字索引的数组.

$result = $STH->fetchall(PDO::FETCH_ASSOC);