Output the value of a retrieved environment variable

Joyuntok2b55

In Laravel, accessing environment variables is a common task that allows you to retrieve configuration values from your `.env` file or from the server environment. Laravel provides a convenient way to access these variables using the `env()` helper function. Here's how you can use the `env()` function to get environment variables in Laravel:

### Using the `env()` Helper Function

```php
// Retrieve a single environment variable
$value = env('APP_ENV');

// Retrieve a single environment hong kong phone number variable with a default value
$value = env('APP_ENV', 'production');

// Retrieve multiple environment variables as an array
$variables = [
    'env1' => env('ENV_VAR_1'),
    'env2' => env('ENV_VAR_2'),
];

echo $value;
```

### Setting Default Values

You can provide a default value as the second parameter to the `env()` function. If the specified environment variable is not found, Laravel will return the default value instead.



### Retrieving Multiple Environment Variables

You can use the `env()` function to retrieve multiple environment variables by calling it multiple times within an array or associative array.

### Usage in Configuration Files

You can use the `env()` function within your Laravel configuration files to dynamically set configuration values based on environment variables. For example:

```php
// config/database.php
'mysql' => [
    'driver'    => 'mysql',
    'host'      => env('DB_HOST', '127.0.0.1'),
    'database'  => env('DB_DATABASE', 'forge'),
    'username'  => env('DB_USERNAME', 'forge'),
    'password'  => env('DB_PASSWORD', ''),
    'charset'   => 'utf8mb4',
    'collation' => 'utf8mb4_unicode_ci',
    'prefix'    => '',
    'strict'    => true,
    'engine'    => null,
],
```

### Caching Environment Variables

Laravel caches environment variables after they are retrieved for the first time during a request. This means that subsequent calls to the `env()` function within the same request will return the cached value, improving performance.

### Conclusion

In Laravel, the `env()` helper function provides a convenient way to access environment variables from your `.env` file or server environment. Whether you're retrieving a single variable, setting default values, or accessing multiple variables at once, the `env()` function simplifies the process of working with environment configuration in your Laravel applications.