php database settings laravel

PHP Database Settings Laravel

Laravel is an open source PHP web application framework. It has quickly become the framework of choice for many developers and businesses as it provides a simple and elegant way to build web applications. The Laravel framework uses Composer to install and maintain dependencies, and the Artisan command line tool to manage and generate code.

PHP is a commonly used server-side scripting language that is often used to develop web applications. PHP has a rich set of built-in functions and extensions that can interact with a variety of database management systems, such as MySQL, Oracle, PostgreSQL, etc. This article will introduce how to configure and connect to the MySQL database in the Laravel framework.

In the Laravel framework, you can use the .env configuration file to store environment variables. This file can be thought of as the application's "secrets" and contains sensitive information such as database credentials and application keys. You can find this file in the application root directory. The following is an example content of the .env file:

<code>APP_NAME=Laravel
APP_ENV=local
APP_KEY=base64:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
APP_DEBUG=true
APP_URL=http://localhost

LOG_CHANNEL=stack

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=mydatabase
DB_USERNAME=myusername
DB_PASSWORD=mypassword

BROADCAST_DRIVER=log
CACHE_DRIVER=file
QUEUE_CONNECTION=sync
SESSION_DRIVER=file
SESSION_LIFETIME=120</code>

In the above content, the DB_CONNECTION parameter specifies the database engine type used, the DB_HOST parameter specifies the host name/IP address of the MySQL service, and the DB_PORT parameter specifies the MySQL service. Port, the default value is 3306, the DB_DATABASE parameter specifies the name of the connected database, and the DB_USERNAME and DB_PASSWORD parameters specify the account name and password to log in to the database respectively.

After changing the information to actual values ​​that suit you, save the .env file.

After setting up the database in your Laravel application, you can use the Eloquent ORM to access the database. Eloquent ORM is part of Laravel and is a simple and elegant ActiveRecord implementation. Use Eloquent ORM to easily perform database operations such as inserting, updating, and deleting records, performing associated queries, and limiting the number of query results.

The following is a simple example that uses Eloquent ORM to retrieve and return data from all users tables from the database:

<code><?php
namespace App\Http\Controllers;
use App\User;
use Illuminate\Http\Request;

class UserController extends Controller
{
    public function index()
    {
        $users = User::all();
        return view('users.index', compact('users'));
    }
}</code>

In the above, users can be easily obtained using Eloquent ORM all records in the table. After the search is completed, the results are passed as variables to the view() function, which loads and displays the specified view.

In the Laravel framework, configuring and using a database is very simple. By modifying the .env file, you can easily set the database connection information and then use Eloquent ORM to perform database queries. The Laravel framework provides many features and tools that make web application development fun and easy.

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