PHP PDO Sqlsrv始终以字符串形式返回每个值

问题描述：

如何从具有正确字段类型的数据库中获取价值?

How do I get value from DB with correct field type?

我正在使用PDO Sqlsrv从数据库获取数据，并且我总是以字符串形式接收数据，例如:customer_id : "1"我的customer_id字段类型是整数，应该是customer_id : 1，但是phone_number字段类型是varchar，它返回将类型更正为字符串，例如:phone_number : "12345678"

I'm using PDO Sqlsrv to fetch data from DB and I always receive data as string like: customer_id : "1" My customer_id field type is integer it should be customer_id : 1 But phone_number field type is varchar it return to correct type as string like: phone_number : "12345678"

我正在使用PHP 5.5.我已经尝试过了.

I'm using PHP 5.5. I've tried this.

$this->dbh->setAttribute(PDO::SQLSRV_ATTR_FETCHES_NUMERIC_TYPE, true);

我得到了这个错误Fatal error: Undefined class constant 'SQLSRV_ATTR_FETCHES_NUMERIC_TYPE'

我的PDO代码:

$this->dbh = new PDO('sqlsrv:Server=' . $_ENV['DB_HOST'] . ';Database=' . $_ENV['DB_NAME'], $_ENV['DB_USER'], $_ENV['DB_PASS']);
$this->dbh->exec('set names ' . $_ENV['DB_CHAR_SET']);
$this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$this->dbh->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
$this->dbh->setAttribute(PDO::SQLSRV_ATTR_FETCHES_NUMERIC_TYPE, true); // Got Error 
$this->dbh->setAttribute(PDO::SQLSRV_ATTR_ENCODING, PDO::SQLSRV_ENCODING_UTF8);

答

解决方案:

我将完全回答您的问题，您可以尝试使用 PDOStatement :: bindColumn .您使用PHP 5.5并基于更改日志，SQLSRV_ATTR_FETCHES_NUMERIC_TYPE不是支持.

I will answer exactly to your question and what you may try is to use PDOStatement::bindColumn. You use PHP 5.5 and based on support matrix, your PHP Driver version should be 3.1 or 3.2. In this version, based on change log, SQLSRV_ATTR_FETCHES_NUMERIC_TYPE is not supported.

...
$stmt->bindColumn('customer_id', $customer_id, PDO::PARAM_INT);
$stmt->bindColumn('phone_number', $phone_number, PDO::PARAM_STR);
while ($row = $stmt->fetch(PDO::FETCH_BOUND)) {
    var_dump($customer_id);
    var_dump($phone_number);
    echo '<br>';
}
...

PHP PDO Sqlsrv始终以字符串形式返回每个值

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