Diagnostics reference

$twig->getDiagnostics() is available on both the standalone renderer and the CodeIgniter adapter. It returns these base sections:

Key	Meaning
renders	Successful render count on this instance
last_render_view	Last successfully rendered view, or null before any render
environment_resets	Explicit environment resets
cache	Enabled state, path/backend, prefix, TTL, indexed template count, reconstruction flag
performance	Total/average render timing; per-template details when enabled
capabilities	Resolved full/lean profile with explicit overrides
persistence	Actual metadata medium for enabled artifacts

Full mode also includes names, static_functions, static_filters, extensions, dynamic_functions, dynamic_filters, discovery, warmup and invalidations as their capabilities permit. Lean mode omits disabled sections rather than returning empty placeholders.

cache.compiled_templates is an advisory logical index count. Inspect real cache artifacts or run warmup to verify availability. reconstructed_index means that compiled files existed but a logical index could not be loaded. Filesystem reconstruction uses synthetic unknown_* names; warmup restores useful names.

Discovery reports request-local hits, misses, invalidations, list counts, fingerprint and source (scan, persisted or apcu). Its persistence_medium and the persistence map report file, ci, or the label supplied by a custom metadata store. Re-reading diagnostics does not overwrite live discovery hits.

The CI4 collector lives at Daycry\Twig\CodeIgniter4\Debug\Toolbar\Collectors\Twig and resolves the adapter's shared service. Use the adapter's toolbar flags to limit its rendered sections.