autoload.php

<?php

require __DIR__.'/../vendor/.composer/autoload.php';

use Symfony\Component\ClassLoader\UniversalClassLoader;
use Doctrine\Common\Annotations\AnnotationRegistry;

$loader = new UniversalClassLoader();
$loader->registerNamespaceFallbacks(array(__DIR__.'/../src',));
$loader->register();

AnnotationRegistry::registerLoader(function($class) use ($loader) {
    $loader->loadClass($class);
    return class_exists($class, false);
});
AnnotationRegistry::registerFile(__DIR__.'/../vendor/doctrine/mongodb-odm/lib/Doctrine/ODM/MongoDB/Mapping/Annotations/DoctrineAnnotations.php');