[BUG]: Wrong return type hint for Phalcon\Mvc\Model::count

[sergeyklay]

Current return type hint of the Phalcon\Mvc\Model::count implies that method must return an integer value. But this method MAY return a Phalcon\Mvc\Model\Resultset\Simple for some cases:

cphalcon/phalcon/Mvc/Model.zep

Lines 983 to 994 in 930fc08

	public static function count(var parameters = null) -> int
	{
	var result;
	let result = self::_groupResult("COUNT", "rowcount", parameters);
	if typeof result == "string" {
	return (int) result;
	}
	return result;
	}

For example:

use Phalcon\Di;
use Phalcon\Di\FactoryDefault;
use Phalcon\Db\Adapter\PdoFactory;
use Phalcon\Mvc\Model;

$options = ['dbname' => '/tmp/test.sqlite'];

Di::reset();

$container = new FactoryDefault();
Di::setDefault($container);

$container->setShared(
    'db',
    (new PdoFactory())->newInstance('sqlite', $options)
);

class Invoices extends Model {
    public $inv_id;
    public $inv_cst_id;
    public $inv_status_flag;
    public $inv_title;
    public $inv_total;
    public $inv_created_at;

    public function initialize()
    {
        $this->setSource('co_invoices');
    }
}

var_dump(Invoices::count(["inv_id = 1"]));  // here is all ok
var_dump(Invoices::count(['group' => 'inv_cst_id'])); // here is an error

This leads to a fatal error:

PHP Fatal error:
Return value of Phalcon\Mvc\Model::count()
must be of the type int, object returned in Unknown on line 0

[sergeyklay]

Fixed in 4.0.x branch