PHP code example of crell / envmapper

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

crell / envmapper example snippets

// Define the class.
class DbSettings
{
    public function __construct(
        // Loads the DB_USER env var.
        public readonly string $dbUser,
        // Loads the DB_PASS env var.
        public readonly string $dbPass,
        // Loads the DB_HOST env var.
        public readonly string $dbHost,
        // Loads the DB_PORT env var.
        public readonly int $dbPort,
        // Loads the DB_NAME env var.
        public readonly string $dbName,
    ) {}
}

$mapper = new Crell\EnvMapper\EnvMapper();

$db = $mapper->map(DbSettings::class);

class MissingStuff
{
    public function __construct(
        public readonly string $notSet,
    ) {}
}

// This will throw a MissingEnvValue exception unless there is a NOT_SET env var defined.
$mapper->map(MissingStuff::class, 

$mapper->map(Environment::class, source: getenv());

namespace App\Providers;
 
use App\Environment;
use Crell\EnvMapper\EnvMapper;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Support\ServiceProvider;
 
class EnvMapperServiceProvider extends ServiceProvider
{
    // The EnvMapper has no constructor arguments, so registering it is simple.
    public $singletons = [
        EnvMapper::class => EnvMapper::class,
    ];
    
    public function register(): void
    {
        // When the Environment class is requested, it will be loaded lazily out of the env vars by the mapper.
        // Because it's a singleton, the object will be automatically cached.
        $this->app->singleton(Environment::class, fn(Application $app) => $app[EnvMapper::class]->map(Environment::class));
    }
}

class AService
{
    public function __construct(private readonly AwsSettings $settings) {}
    
    // ...
}

class AServiceTest extends TestCase
{
    public function testSomething(): void
        $awsSettings = new AwsSettings(awsKey: 'fake', awsSecret: 'fake');

        $s = new Something($awsSettings);

        // ...
    }
}

class DbSettings
{
    public function __construct(
        public readonly string $dbUser,
        public readonly string $dbPass,
        public readonly string $dbHost,
        public readonly int $dbPort,
        public readonly string $dbName,
    ) {}
}

class AwsSettings
{
    public function __construct(
        public readonly string $awsKey,
        public readonly string $awsSecret,
    ) {}
}

// Laravel version.
class EnvMapperServiceProvider extends ServiceProvider
{
    public function register(): void
    {
        $this->app->singleton(DbSettings::class, fn(Application $app) => $app[EnvMapper::class]->map(DbSettings::class));
        $this->app->singleton(AwsSettings::class, fn(Application $app) => $app[EnvMapper::class]->map(AwsSettings::class));
    }
}

$serde = new SerdeCommon();

$env = $serde->deserialize($_ENV, from: 'array', to: Environment::class);