There are 3 repositories under php-stratum topic.
PhpStratum: Command line interface
PhpStratum: The glue between PhpStratum and backends for database servers
PhpStratum: Common parts shared between backends for database systems
PhpStratum: The glue between a PhpStratum backend and your application
PhpStratum: Backend for MySQL and MariaDB
PhpStratum: Backend for SQLite using PDO
DatabaseStratum: Documentation