SImple service runner including adapter

cron.php

<?php

$serviceContainer = new ServiceContainer();
$serviceContainer->add("my service", MyService::class);

$serviceRunner = new ServiceRunner($serviceContainer, MyServiceAdapter::class);
$serviceRunner->exec();

MyService.php

<?php

class MyService implements ServiceInterface
{
    public function boot() {
        echo "booting..\n";
    }
    
    public function run() {
        echo "running...\n";
    }
}

MyServiceAdapter.php

<?php

class MyServiceAdapter implements ServiceRunnerAdapter {
    public function exec(array $services) {
        foreach ($services as $service) {
            $service->run();
        }
    }
}

ServiceAdapterInterface.php

<?php

interface ServiceRunnerAdapter {
    public function exec(array $services);
}

ServiceContainer.php

<?php

class ServiceContainer {
    
    private $services;
    
    public function add($name, $instance)
    {
        $this->services[$name] = $instance;
    }
    
    public function boot()
    {
        foreach($this->services as $name => $instance) {
            if (is_string($instance)) {
                $this->services[$name] = new $instance();
                
                    $this->services[$name]->boot();
                
            }
        }
    }
    
    public function get()
    {
        $this->boot();
        return $this->services;
    }
}

ServiceInterface.php

<?php

interface ServiceInterface {
    public function run();
}

ServiceRunner.php

<?php

class ServiceRunner {
    
    private $container;
    
    private $adapter;
    
    public function __construct(ServiceContainer $container, ServiceRunnerAdapter $adapter = null) {
        $this->container = $container;
        
        if ($adapter != null) {
            if (is_string($adapter)) {
                $this->adapter = new Adapter();
            } else {
                $this->adapter = $adapter;
            }
        }
        
        $this->adapter = $adapter;
    }
    
    public function exec() {
        $services = $this->container->get();
        
        if ($this->adapter != null) {
            $this->adapter->exec($services);
        } else {
            foreach($this->container->get() as $name => $instance) {
                $instance->run();
            }   
        }
    }
}