Question

$duyuru1 = $PDO->prepare("SELECT * FROM duyurular WHERE id = ?");
$duyuru1->execute(array('1'));
$duyuru1->fetchAll();

$duyuru2 = $PDO->prepare("SELECT * FROM duyurular WHERE id = ?");
$duyuru2->execute(array('2'));
$duyuru2->fetchAll();

$duyuru3 = $PDO->prepare("SELECT * FROM duyurular WHERE id = ?");
$duyuru3->execute(array('3'));
$duyuru3->fetchAll();

$duyuru4 = $PDO->prepare("SELECT * FROM duyurular WHERE id = ?");
$duyuru4->execute(array('4'));
$duyuru4->fetchAll();

$duyuru5 = $PDO->prepare("SELECT * FROM duyurular WHERE id = ?");
$duyuru5->execute(array('5'));
$duyuru5->fetchAll();

第72行：<?php echo $duyuru1['baslik'] ?>

致命错误：不能在第72行的index.php中使用PDOStatement类型的对象作为数组

Answer 1

试试这个：

// set exception handling to report SQL errors
$PDO->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);

try {
    // prepare statement once
    $stmt = $PDO->prepare("SELECT * FROM duyurular WHERE id = ?");

    // execute statement & fetch data for first row as associative array.
    $stmt->execute(array('1'));
    $duyuru1 = $stmt->fetch(PDO::FETCH_ASSOC);

    // Execute same statement again with new argument. Fetch data
    $stmt->execute(array('2'));
    $duyuru2 = $stmt->fetch(PDO::FETCH_ASSOC);

    // repeat for remaining arguments.
    $stmt->execute(array('3'));
    $duyuru3 = $stmt->fetch(PDO::FETCH_ASSOC);

    $stmt->execute(array('4'));
    $duyuru4 = $stmt->fetch(PDO::FETCH_ASSOC);

    $stmt->execute(array('5'));
    $duyuru5 = $stmt->fetch(PDO::FETCH_ASSOC);

} catch (PDOException $e) {
    // Exception lands here. Report problem and exit.
    echo $e->getMessage();
    exit;
}

...后...

<?php echo $duyuru1['baslik'] ?>

这假设id在您的表中是唯一的 - 如果不是，您需要更多代码来检索剩余的行。

这也是一种从数据库中检索多行的笨拙方法。您可以更好地改进查询并立即将所有行检索到数组中，但这是一个单独的问题。

PDO阵列错误

1 个答案: