Yii using OOP?

Question

Yii

here in OOP there is class inheritance, but what about this in PHP?
suppose the model has

public static function init_ruda($id_template, $time, $smen)
    {

but one more condition needs to be added. that is, the number of transferred elements will not be 3 but 4. Would you like to expand the function
or can you somehow access the function with 3 elements, and the fourth one if you wish?
something like

public static function init_ruda($id_template, $time, $smen, $type = null)
    {

Answer 1

Inheritance
In my opinion, everything is fine with inheritance. It is not clear where Yii has to do with it.