Yes this simple code is working for me, but in PDO Connection class, functions not shows any result.

try {
$dbh = new PDO("mysql:host=localhost;dbname=example", "root", "root");
/*** echo a message saying we have connected ***/
echo 'Connected to database<br />';

/*** The SQL SELECT statement ***/
$sql = "CALL myprocedure(parameters)";

/*** fetch into an PDOStatement object ***/
$stmt = $dbh->query($sql);

/*** echo number of columns ***/
$result = $stmt->fetch(PDO::FETCH_NUM);

/*** loop over the object directly ***/
foreach($result as $key=>$val)
{
echo $key.' - '.$val.'<br />';
}

/*** close the database connection ***/
$dbh = null;
}
catch(PDOException $e)
{
echo $e->getMessage();
}