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How to use multiple databases in Laravel - php


In Laravel, you can easily configure multiple database connections by updating the config/database.php file. 
Here's a step-by-step guide on how to add a new MySQL database connection in Laravel:

Open the config/database.php file in your Laravel project.
Locate the connections array within the file. Inside this array, you'll find various database connections like mysql, pgsql, etc.

Add a new array with the configuration for your additional MySQL database. You can name it anything you like, for example, epushserver. 
Here's an example configuration:

'epushserver' => [
    'driver' => 'mysql',
    'host' => env('DB_EPUSH_HOST', '127.0.0.1'),
    'port' => env('DB_EPUSH_PORT', '3306'),
    'database' => env('DB_EPUSH_DATABASE', 'epushserver'),
    'username' => env('DB_EPUSH_USERNAME', 'your_epush_username'),
    'password' => env('DB_EPUSH_PASSWORD', 'your_epush_password'),
    'charset' => 'utf8mb4',
    'collation' => 'utf8mb4_unicode_ci',
    'prefix' => '',
    'strict' => true,
    'engine' => null,
],

In this example, we're using environment variables for configuration values. Update your .env file to include these variables:
DB_EPUSH_HOST=localhost
DB_EPUSH_PORT=3306
DB_EPUSH_DATABASE=epushserver
DB_EPUSH_USERNAME=your_epush_username
DB_EPUSH_PASSWORD=your_epush_password

Now, you can use this new connection in your Laravel application. In your models or controllers, you can specify the connection like this:

$users = DB::connection('epushserver')->select('select * from users ');

Replace users with your actual table name and adjust the query as needed.

That's it! You've successfully added a new MySQL database connection to your Laravel project. You can now use this connection to interact with the epushserver database in your application.

You can use Laravel's Tinker tool to check the database connection from the command line. Here's how you can do it:
Open a terminal and navigate to your Laravel project's root directory.
Run the following command to open Tinker:

php artisan tinker

Once in the Tinker shell, you can use the DB facade to check the database connection. For example:

DB::connection()->getPdo();

This command will attempt to retrieve the underlying PDO instance for the default database connection. If there is a successful connection, you should see the PDO instance details.

If you want to check the connection for a specific database connection (e.g., 'epushserver' as per your previous configuration), you can use:

DB::connection('epushserver')->getPdo();

Get the Database Name:
$databaseName = DB::connection()->getDatabaseName();
echo "Database Name: $databaseName";

 These examples should help you retrieve information about the database and its tables in a Laravel project. Adjust the code based on your specific requirements.

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