PHP Module

01-index.php

<?php

require 'module.php';
require 'doctrine-module.php';

$myClass = MyVendor\MyModulePackageBundle\Domain\MyClass();
echo $myClass::module; // MyVendor\MyModulePackageBundle
var_dump(file_exists('vendor+package:resources/config.yml')); // true

$driver = new Doctrine\DBAL\Driver\Mysql();
echo $driver::module; // Doctrine\DBAL

02-module.php

<?php
module MyVendor\MyModulePackageBundle // module declaration
{
  const module = 'MyVendor\\MyModulePackageBundle'; // magic constant used like "::class"
  const protocol = 'vendor+package'; // used for module stream wrapper for eg. "vendor+package:resources/config.yml"
  
  requires Dcctrine\DBAL; // points required module to use
  exports Domain\MyClass; // points exposed public api classes
  
  public function __autoload(string $className) : void // 
  {
    $fname = str_replace('\\', DIRECTORY_SEPARATOR, str_replace(self::module, '', $className)); // MyClass.php
    $fpath = self::protocol . ':src' . DIRECTORY_SEPARATOR . $fname . '.php'; // vendor+package:src/Domain/MyClass.php
    if (file_exists($fpath)) { // uses package stream wrapper so there is no need to know full real file path
      require $fpath;
    }
  }  
}

03-src-Domain-MyClass.php

<?php
module MyVendor\MyModulePackageBundle;
namespace Domain; // at parse time this evolves into namespace MyVendor\MyModulePackageBundle\Domain\MyClass; namespace name

class MyClass { // this class is linked to module so there is possible to recognize it's access public or protected
}

04-resources-config.yml

services:
  doctrine:
    driver: Mysql...

05-doctrine-module.php

<?php
module Doctrine\DBAL { // module declaration
  const module = 'Doctrine\\DBAL'; // magic constant used like "::class"
  const protocol = 'doctrine+dbal'; // used for module stream wrapper for eg. "doctrine+dbal:src/Driver/Mysql.php"
  
  exports Connections;
  exports Driver;
  exports Driver\{
    DrizzlePDOMySql, IBMDB2, Mysqli, OCI8, PDOIbm, PDOMySql, PDOOracle, PDOPgSql, PDOSqlite, PDOSqlsrv, SQLAnywhere, SQLSrv
  }; // similar to group use statements
}