How to edit information in the database through a method?

Question

PHP

Guys, I need help. There is a product. At it for example four fields in a DB. ID, name, price, description. The Product class has setName(id, name), setPrice(id, price), setDescription(id, text) methods.
Previously, I created a general update method and added an associative array with keys (id, price, name, description) there, but over time I realized that you can expand only by editing the main class, and this contradicts the oop principle.
How to correctly build the logic for editing a product using these four fields as an example?
Three ways came to mind:
1. Leave it as it is and change ONE value AT ONCE (the downside is that you have to submit for each field in the form)
2. Accept an associative array and edit in one update method.
3. Write an intermediate method that, based on an associative array, will assemble a construction like
$obj->setId($id);
$obj->setName($name);
$obj->setPrice($price);
$obj->Update();

Answer 1

read about ORM. Eloquent for example laravel.su/docs/5.2/eloquent