How to search across multiple fields in laravel?

Question

Laravel

WHERE `name` = 'Вася' AND `lastname` = 'Иванов'
or
WHERE `name` = 'Вася' OR`lastname` = 'Иванов'
How to write such queries using laravel?

Answer 1

...->where('name', 'Вася')->where('lastname', 'Иванов');

...->where('name', 'Вася')->orWhere('lastname', 'Иванов');

What's stopping you from reading the documentation?
https://laravel.com/docs/7.x/queries#where-clauses