Migrations

Migration_000001_Bcrypt.php

class Migration_000001_Bcrypt : MigrationInterface
{
    private $migrationManager;

    public function up() : void
{
if ($this->migrationManager->getSetting('passwordAlgorithm') !== null) {
    return;
}

    // fetch users and change password encoding
}

public function down() : void
{
    // nada
}
}

MigrationInterface.php

interface MigrationInterface
{
    public function up() : void;
    public function down() : void;
}

MigrationManagerInterface.php

interface MigrationManagerInterface
{
    public function getSetting(string $name) : ?string;
    public function setSetting(string $name, string $value) : void;
}