$needle = array (1, 'site administrator', 2, 'content manager');

$inside = false;

foreach ($needle as &$value) 
{
    if (in_array($value, array_values($user->roles))) 
    {
     $inside = true;
     break;
    }
}

Drupal snippet

Check for multiple values in array

php, array, drupal, user

PHP