This makes a demonstration of the PHP Reflection API

ReflectionAPI

<?php

class Person{
    public $name;

    public function __construct(string $name){
        $this->name = $name;
    }
}

interface Module
{
    public function execute();
}

class FtpModule implements Module
{
    public function setHost($host)
    {
        print "FtpModule::setHost(): $host\n";
    }

    public function setUser($user)
    {
        print "FtpModule::setUser(): $user\n";
    }

    public function execute()
    {

    }
}

class PersonModule implements Module
{
    public function setPerson(Person $person)
    {
        print "PersonModule::setPerson(): {$person->name}\n";
    }

    public function execute()
    {

    }
}


class ModuleRunner
{
    private  $configData = [
        PersonModule::class => ['person' => 'bob'],
        FtpModule::class => [
            'host' => 'example.com',
            'user' => 'anon'
        ]
    ];

    private $modules = [];

    public function init()
    {
        $interface = new \ReflectionClass(Module::class);

        foreach ($this->configData as $moduleName => $params)
        {
            $moduleClass = new \ReflectionClass($moduleName);
            if(! $moduleClass->isSubclassOf($interface)){
                throw new Exception("unknown module type: $moduleName");
            }

            $module = $moduleClass->newInstance();

            foreach($moduleClass->getMethods() as $method)
            {
                $this->handle($module, $method, $params);
            }
            array_push($this->modules,$module);
        }

    }

    public function handle(Module $module, ReflectionMethod $method, array $params)
    {
        $name = $method->getName();
        $args = $method->getParameters();

        if(count($args) != 1 || substr($name,0,3) != "set"){
            return false;
        }

        $property = strtolower(substr($name,3));

        if(! isset($params[$property])){
            return false;
        }

        $argClass = $args[0]->getClass();

        if(empty($argClass)){
            $method->invoke($module, $params[$property]);
        }else{
            $method->invoke(
                $module, 
                $argClass->newInstance($params[$property])
            );
        }
    }

}


$init = new ModuleRunner();
$init->init();