IdentityGenerator.php

<?php

namespace Doctrine\ORM\Sequencing;

use Doctrine\ORM\EntityManagerInterface;

class IdentityGenerator implements Generator
{
    private const NUM_LENGTH = 8;

    /**
     * The name of the sequence to pass to lastInsertId(), if any.
     *
     * @var string
     */
    private $sequenceName;
    
    /**
     * @param string|null $sequenceName The name of the sequence to pass to lastInsertId()
     *                                  to obtain the last generated identifier within the current
     *                                  database session/connection, if any.
     */
    public function __construct(?string $sequenceName = null)
    {
        $this->sequenceName = $sequenceName;
    }
    
    /**
     * {@inheritDoc}
     */
    public function generate(EntityManagerInterface $em, ?object $entity)
    {
        $lastId = (int) $em->getConnection()->lastInsertId($this->sequenceName);
        $currentYear = date('Y');
        return substr($lastId, 0, 2) < $currentYear 
          ? str_pad($currentYear, self::NUM_LENGTH, '0', STR_PAD_RIGHT) + 1
          : $lastId;
    }
    
    /**
     * {@inheritdoc}
     */
    public function isPostInsertGenerator() : bool
    {
        return true;
    }
}