[8.x] Support database_url for php artisan db command

[mmabdelgawad]

Problem

When you are using DATABASE_URL in your .env and run php artisan db it doesn't open database CLI and throws an error

.env file

DATABASE_URL=mysql://root:password@mysql:3306/database

The thrown error

Symfony\Component\Process\Exception\ProcessFailedException 

The command "'mysql' '--host=127.0.0.1' '--port=3306' '--user=forge' '--default-character-set=utf8mb4' 'forge'" failed.

Exit Code: 1(General error)

As you can see the php artisan db will look for DB_CONNECTION, DB_HOST, DB_PORT etc. in .env file and if they are not exist it will fallback to the default database configuration defined in config/database.php and it will not parse the DATABASE_URL

Solution

To fix this we need check if the url is set and not empty in the $connection array then parse and return the new $connection configuration

if (! empty($connection['url'])) {
    $connection = (new ConfigurationUrlParser)
        ->parseConfiguration($connection);
}