Pdostatement How to define member variables, how to implement store query results

Reading the object of Pdostatement this class is a bit of a misunderstanding. Looking through PHP's documentation, there is only one member variable queryString in the definition of pdostatement. However, the member variables of the Pdostatement object instantiated by the query statement contain database query results:

$db = new PDO('sqlite:/tmp/student');$rows = $db->query('SELECT name,age FROM student');foreach ($rows->fetchAll() as $row) {//适当的语句}

The above $rows as the result of the query, he is a Pdostatement object, which clearly has the query results as a member variable. How to achieve, want to see the source code, but no details.

Reply content:

Reading the object of Pdostatement this class is a bit of a misunderstanding. Looking through PHP's documentation, there is only one member variable queryString in the definition of pdostatement. However, the member variables of the Pdostatement object instantiated by the query statement contain database query results:

$db = new PDO('sqlite:/tmp/student');$rows = $db->query('SELECT name,age FROM student');foreach ($rows->fetchAll() as $row) {//适当的语句}

The above $rows as the result of the query, he is a Pdostatement object, which clearly has the query results as a member variable. How to achieve, want to see the source code, but no details.

But the member variables of the Pdostatement object instantiated by the query statement contain the results of the database query?
$rows->fetchall ()? Is this a member variable?

