PDO设置PDO :: MYSQL_ATTR_FOUND_ROWS失败 [英] PDO Setting PDO::MYSQL_ATTR_FOUND_ROWS fails
问题描述
我试图在PDO中将PDO::MYSQL_ATTR_FOUND_ROWS
属性设置为true,但是我似乎无法设置它.我正在使用PHP 5.4.16和MySQL 5.5.PDO
和pdo_mysql
都出现在我的phpinfo()
中.
I'm trying to set PDO::MYSQL_ATTR_FOUND_ROWS
attribute to true in PDO, but I cannot seem to set it. I am using PHP 5.4.16 and MySQL 5.5.PDO
and pdo_mysql
both appear in my phpinfo()
.
这是我尝试将其设置为true的方法.
Here is how I try to set it to true.
public function __construct () {
$dsn = 'mysql:host=' . DB_HOST . ';dbname=' . DB_NAME . ';charset=utf8';
$this->_db = new PDO($dsn,DB_USER,DB_PASS);
// The following setAttribute() returns FALSE.
$this->_db->setAttribute(PDO::MYSQL_ATTR_FOUND_ROWS, TRUE);
}
我试图寻找我能想到的所有可能的设置.我还缺少什么?
I tried to look for every possible settings I can think of. What am I still missing?
推荐答案
似乎 PDO::MYSQL_ATTR_FOUND_ROWS
是 mysql连接选项.因此,它也仅用作PDO连接选项.因此,以这种方式进行设置
It seems that PDO::MYSQL_ATTR_FOUND_ROWS
is a mysql connection option. Thus, it works only as PDO connection option as well. So, set it up this way
$opt = array(
PDO::MYSQL_ATTR_FOUND_ROWS => TRUE,
// you may wish to set other options as well
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
);
$this->_db = new PDO($dsn,DB_USER,DB_PASS,$opt);
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