Symfony 4 fixtures generator for Riprap

AppFixtures.php

<?php
// src/DataFixtures/AppFixtures.php
namespace App\DataFixtures;

use App\Entity\FixityCheckEvent;
use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Common\Persistence\ObjectManager;
use Ramsey\Uuid\Uuid;

class AppFixtures extends Fixture
{
    public function load(ObjectManager $manager)
    {
        $ids = range(0, 1000);
        $data = array();
        foreach ($ids as $id) {
            $uuid4 = Uuid::uuid4();
            $uuid = $uuid4->toString();
            $data[$id] = array('uuid' => $uuid, 'SHA-1' => sha1($id));

            $event = new FixityCheckEvent();
            $event->setEventUuid($data[$id]['uuid']);
            $event->setEventType('fix');
            $event->setResourceId('http://localhost:8000/mockrepository/rest/' . $id);
            // Only the days and months are "random", within specificed ranges of values.
            $month = str_pad(rand(7, 12), 2, '0', STR_PAD_LEFT);
            $day = str_pad(rand(1,28), 2, '0', STR_PAD_LEFT);
            $rand_date = '2018-' . $month . '-' . $day . 'T19:04:20-0800';
            $event->setTimestamp($rand_date);
            $event->setDigestAlgorithm('SHA-1');
            $event->setDigestValue($data[$id]['SHA-1']);
            $event->setEventOutcome('success');
            $event->setEventDetail('');
            $event->setEventOutcomeDetailNote('');

            $manager->persist($event);
        }
        $manager->flush();
    }
}