Description:
------------
PDO fetch doesn't preserve the case of the column.  I don't know if this is a "feature" or if it is a bug, but if it is a "feature" since the beginning of PDO, could I also suggest that another flag be added for PDO fetch to tell it to preserve the case?



Reproduce code:
---------------
<?php
try {
$pdo = new PDO("pgsql:host={$host};dbname={$database}", $user, $password);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->query("SET search_path to {$schema}");
$accountState = $pdo->prepare('
	SELECT id AS accountId
	FROM account
	WHERE id = ?
');
$accountState->bindParam(1, $id, PDO::PARAM_INT);
$accountState->execute();
$getAccount = $accountState->fetch(PDO::FETCH_OBJ);
$accountState->closeCursor();
var_dump($getAccount);
} catch (Exception $e){
print "An error occurred: {$e->getMessage()}";
}
?>

Expected result:
----------------
object(stdClass)#8 (1) {
  ["accountId"]=>
  int(339)
}


Actual result:
--------------
object(stdClass)#8 (1) {
  ["accountid"]=>
  int(339)
}