$user='root';
$password='root';
$database='emotiondb';
$pdo=null;
try {
    $pdo = new PDO("mysql:host=localhost;dbname$database", $user, $password);
    $pdo->setAttribute(PDO::ATTR_ERRMODE,
        PDO::ERRMODE_EXCEPTION);
    echo 'Connected to database';
}catch (PDOException $e)
{
    print 'Exception!: ' . $e->getMessage();
}