PDO在PHP5.4中将整数列作为String返回 [英] PDO returns integer columns as String in PHP5.4
问题描述
首先,我知道SO上存在各种类似的问题,例如此.但是,当我从表中获取值时,整数总是作为字符串获取.
First of all, I am aware that there are various similar questions on SO such as this and this. However, when I fetch values from a table, integers are always fetched as string.
我正在使用PHP5.4(5.4.16-1〜dotdeb.1)和MYSQL5.5(5.5.31 + dfsg-0 + wheezy1).在此处写道,PHP5默认情况下启用了MySQL本机驱动程序.4.0.但是我仍然得到字符串值.
I am using PHP5.4 (5.4.16-1~dotdeb.1) and MYSQL5.5 (5.5.31+dfsg-0+wheezy1). It is written here that MySQL Native Driver is enabled by default in PHP5.4.0. But I still get string values.
我按如下方式初始化PDO对象.
I initialize a PDO object as follows.
try {
$dsn = 'mysql:host=' . DB_HOST . ';dbname=' . DB_NAME . ';charset=utf8';
$db = new PDO($dsn,DB_USER,DB_PASS);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
} catch (PDOException $e) {
header('HTTP/1.1 500');
exit;
} catch (Exception $e) {
header('HTTP/1.1 500');
exit;
}
插入时,我尝试使用execute(array(...))
格式,也使用了bindValue(...,PDO::PARAM_INT)
,但是它们没有什么区别.
When I insert, I tried to use execute(array(...))
format and also used bindValue(...,PDO::PARAM_INT)
, but they did not make a difference.
例如,这是我插入新行的方式.
For example, here is how I insert a new row.
public function insertList ($db,$account_id,$list_name) {
$sql = $db->prepare('INSERT INTO lists VALUES (?,?,?,?,?)');
try {
// $sql->execute(array($list_name,0,0,0,$account_id));
$sql->bindValue(1,$list_name,PDO::PARAM_STR);
$sql->bindValue(2,0,PDO::PARAM_INT);
$sql->bindValue(3,0,PDO::PARAM_INT);
$sql->bindValue(4,0,PDO::PARAM_INT);
$sql->bindValue(5,$account_id,PDO::PARAM_INT);
$sql->execute();
} catch (PDOException $e) {
header('HTTP/1.1 500');
exit;
} catch (Exception $e) {
header('HTTP/1.1 500');
exit;
}
}
这是我从表中获取行的方式
Here is how I fetch rows from a table
public function fetchLists ($db,$account_id) {
$sql = $db->prepare('SELECT * FROM lists WHERE account_id=?');
try {
$sql->execute(array($account_id));
$result = $sql->fetchAll(PDO::FETCH_ASSOC);
} catch (PDOException $e) {
header('HTTP/1.1 500');
exit;
} catch (Exception $e) {
header('HTTP/1.1 500');
exit;
}
return $result;
}
当我在使用PHP5.4.7的Linux 1.8.1的XAMPP上进行测试时,没有发生这种情况.我目前使用nginx代替Apache.
This did not occur when I tested on XAMPP for Linux 1.8.1 which uses PHP5.4.7. I currently use nginx instead of Apache.
怎么了?
推荐答案
要从带有PDO的mysql获取整数和带有相应类型的浮点数,您需要同时关闭基于mysqlnd的PDO-mysql和仿真模式.
To get integers and floats with respective types from mysql with PDO, you need both mysqlnd-based PDO-mysql and emulation mode turned off.
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