Migration

Overview:

Migration provides deterministic schema migration registration and execution.

Public API:

• Migration::register($id, callable $up, ?callable $down = null)
• Migration::status()
• Migration::plan($to = 'latest')
• Migration::apply($to = 'latest')
• Migration::rollback($steps = 1)
• Migration::flush()

Notes:

• Migration ids are sorted lexicographically.
• Applied migrations are tracked in core_migrations.
• Rollback executes down callback when provided.

CLI:

php tools/migrate.php --action=status
php tools/migrate.php --action=apply --to=latest --file=database/migrations.php
php tools/migrate.php --action=rollback --steps=1 --file=database/migrations.php