.env.laravel

| Mistake | Consequence | Solution | |---------|-------------|----------| | Committing .env to Git | Secret leak | Remove with git rm --cached .env and rotate secrets | | Using env() in views | Can break after config cache | Only use config() in application code | | Forgetting quotes for spaces | Variable truncated | Use double quotes: KEY="Multi word" | | Same .env for local & production | Accidental debug mode on live | Use APP_ENV=production and APP_DEBUG=false in production | | Editing .env directly on server (no backup) | Loss of configuration | Keep .env in a safe, backed-up location, use symlinks |

In production, Laravel caches configuration to improve performance. When you run php artisan config:cache, all environment variables are read and stored in a single cached file. If you later change .env, the cache will ignore those changes unless you re-run the command.

Solution: Always re-cache config after editing .env in production:

php artisan config:cache

Laravel loads .env by default, but it also checks for environment-specific overrides if you set the APP_ENV variable. For example, if APP_ENV=staging, Laravel will look for .env.staging after loading .env. Values in .env.staging take precedence.

This means you can have:

Let’s walk through a real-world scenario where .env.laravel improves clarity and security.

Scenario: Your team maintains a monorepo with a Laravel API and a Next.js frontend. You want to avoid confusion between .env for Next.js and .env for Laravel.

Solution:

Result: The Laravel app now ignores the generic .env (if present) and explicitly uses .env.laravel. No more accidental variable collisions. .env.laravel

On production servers:

chown www-data:www-data .env
chmod 640 .env

This allows the web server to read but prevents other system users from viewing it.

Modern versions of Laravel allow environment file encryption. This allows developers to commit encrypted .env files to version control securely.

| Variable Group | Variable Name | Description | Production Importance | | :--- | :--- | :--- | :--- | | Application | APP_ENV | Current environment (local, staging, production). | Critical | | | APP_DEBUG | Displays detailed errors. Must be false in production. | Critical (Security) | | | APP_KEY | 32-bit random string used for encryption & sessions. Set via php artisan key:generate. | Critical | | | APP_URL | The base URL of the application. | Important | | Database | DB_HOST, DB_PORT, DB_DATABASE, DB_USERNAME, DB_PASSWORD | Credentials for the primary database connection. | Critical | | Session | SESSION_DRIVER | (file, cookie, redis, database). redis is best for production scaling. | Important | | Cache | CACHE_DRIVER | (file, redis, memcached, database). | Important | | Queue | QUEUE_CONNECTION | (sync, redis, database). Set to redis or database for async jobs. | Important | | Mail | MAIL_HOST, MAIL_USERNAME, MAIL_PASSWORD, MAIL_ENCRYPTION | Credentials for sending emails (e.g., Mailgun, SES, SMTP). | Critical | | Services (API) | SERVICES_KEY, SERVICES_SECRET | Keys for third-party APIs (Stripe, AWS, Twilio, etc.). | Critical | Laravel loads

At its core, the .env file (which stands for "environment") is a plain text file stored in the root directory of every Laravel installation. It lists key-value pairs that define the application’s runtime configuration. Variables such as database credentials, API keys, caching drivers, and application debugging modes are declared here.

A typical .env file might resemble the following:

APP_NAME="MyApp"
APP_ENV=local
APP_DEBUG=true
APP_URL=http://localhost
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_DATABASE=homestead
DB_USERNAME=root
DB_PASSWORD=secret
MAIL_MAILER=smtp
MAIL_HOST=smtp.mailtrap.io

Crucially, this file is never committed to version control (it is listed in .gitignore by default). This prevents sensitive credentials from being exposed in a public or shared repository. Instead, a sample file named .env.example is distributed, allowing new team members or deployment pipelines to create their own localized .env file.