Question

我使用PDO查询我的mysql-db，并使用简单的“SELECT * FROM Invoices”查询。现在，如果我对查询结果执行print_r，那么“bit”类型的所有列都会获得一个空白值

Array
(
    [0] => stdClass Object
        (
            [ID] => 1
            [Client] => 1
            [Title] => Mars 2012
            [Issued] => 2012-04-02
            [Expiration] => 2012-04-22
            [OurReference] => 1
            [TheirReference] => 
            [Payed] => 
            [Sent] => 
        )

    [1] => stdClass Object
        (
            [ID] => 2
            [Client] => 4
            [Title] => Apputveckling
            [Issued] => 2012-04-30
            [Expiration] => 2012-05-21
            [OurReference] => 1
            [TheirReference] => 
            [Payed] => 
            [Sent] => 
        )

    [2] => stdClass Object
        (
            [ID] => 3
            [Client] => 4
            [Title] => Administration
            [Issued] => 2012-05-28
            [Expiration] => 2012-06-18
            [OurReference] => 1
            [TheirReference] => 
            [Payed] => 
            [Sent] => 
        )

)

怎么会这样？这是使用

的getData方法

public function getData($sql, $data = null)
{
    $statement = $this->query($sql, $data);
    try
    {
        $result = $statement->fetchAll();
    }
    catch(Exception $e)
    {
        echo "Error: " . $e->getMessage() . " ";
        return array();
    }

    if(count($result) > 1)
    {
        return $result;
    }
    else if(count($result) == 1)
    {
        return $result[0];
    }
    else
    {
        return array();
    }
}

编辑：忘记提及，行在db

的字段中有值

Answer 1

位字段映射到布尔值。 false将以您在问题中看到的方式完全打印布尔print_r。这是一个测试脚本，显示：

$a = array(new stdClass());
$a[0]->Payed = false;
print_r($a);

使用var_dump代替您，您应该能够看到每个属性的数据类型以及布尔内容。

位类型的PDO列没有值

1 个答案: