Help installing MongoDB and PHP to work together

I would like to get PHP and MongoDB working together on a new installation of ubuntu 20.04 LTS. MongoDB is installed and PHP is installed but despite my efforts I have not been able to get them to talk. Therefore I would like someone to prepare instructions showing how to install them on a NEW install of ubuntu 20.04 LTS. In other words, the computer will be erased and a new copy of ubuntu 20.04 LTS will be installed.

You will need to give the instructions, all necessary steps, like this example:
1. Install ubuntu
2. # apt update && apt upgrade
3. <install apache>
4. <install php>
5. <install mongodb>
6. <...>

Every step needed to install MongoDB and PHP for them to work together.

Then after this you will create a database in Mongo:
> use testdb
> db.test_collection.insert({ test_field: "0" })
> show collections

After the test database and collection are created in Mongo, then you will create a simple PHP program (prog.php) to allow PHP to display the available databases, and then to display all collections in the database "test".

$ php prog.php

After you give me the instructions, I will follow the instructions and when everything works, you get paid.

This is simple for someone who is currently working with MongoDB and PHP.

Thank you