Answer by Md Riadul Islam for Could not open input file: artisan

First create the project from the following link to create larave 7 project: Create Project

Now you need to enter your project folder using the following command:

cd myproject

Now try to run artisan command, such as, php artisan.

Or it may happen if you didn't install compose. So if you didn't install composer then run composer install and try again artisan command.