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feat: add evaluateFlags() API for single-call flag evaluation #131

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2556d45
feat: add evaluateFlags() API for single-call flag evaluation
dmarticus Apr 27, 2026
c409742
chore: silence PSR1.SideEffects warning in evaluate_flags test
dmarticus Apr 27, 2026
f553e54
fix: address review feedback on evaluate_flags() PR
dmarticus Apr 29, 2026
017a3bd
feat: deprecate legacy single-flag methods and capture send_feature_f…
dmarticus Apr 29, 2026
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15 changes: 15 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,18 @@
## Unreleased

* feat(flags): Add `evaluateFlags()` API for single-call flag evaluation. Returns a
`FeatureFlagEvaluations` snapshot you can read repeatedly without further `/flags` requests; pass
it to `capture()` via the new `flags` key to attach `$feature/<key>` and `$active_feature_flags`
on the captured event without an extra round trip.
* feat(flags): Deprecate `isFeatureEnabled()`, `getFeatureFlag()`, `getFeatureFlagPayload()`, and
the `send_feature_flags` `capture()` option in favor of `evaluateFlags()`. Each emits an
`E_USER_DEPRECATED` warning pointing at the new API; existing callers keep working unchanged
until the next major version. `getFeatureFlagResult()` and `getAllFlags()` are intentionally
*not* deprecated — they expose data the snapshot API doesn't yet cover.
* fix(flags): `SizeLimitedHash::contains()` and `add()` were storing entries on the outer map and
comparing values to keys, so the per-distinct_id `$feature_flag_called` dedup never matched after
the first event. Both helpers now operate on a per-key set as intended.

## 4.2.2 - 2026-04-21

* [Full Changelog](https://github.com/PostHog/posthog-php/compare/4.2.1...4.2.2)
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