yii\base\Model::offsetExists PHP Метод

This method is required by the SPL interface [[\ArrayAccess]]. It is implicitly called when you use something like isset($model[$offset]).

public offsetExists ( mixed $offset ) : boolean
$offset	mixed	the offset to check on.
Результат	boolean	whether or not an offset exists.

    public function offsetExists($offset)
    {
        return isset($this->{$offset});
    }

Model