feat(php): Enable FFE tests and add /ffe endpoints

[leoromanovsky]

Motivation

Enable Feature Flagging and Experimentation (FFE) system tests for PHP, companion to DataDog/dd-trace-php#3630.

Changes

• utils/build/docker/php/parametric/server.php: Added POST /ffe/start and POST /ffe/evaluate endpoints to the PHP parametric test server
• utils/build/docker/php/common/ffe.php: Added POST /ffe endpoint for end-to-end tests (Apache weblog)
• manifests/php.yml: Removed missing_feature for tests/ffe/test_dynamic_evaluation.py, tests/ffe/test_exposures.py, and tests/parametric/test_ffe/test_dynamic_evaluation.py

Decisions

• PHP endpoints use DDTrace\FeatureFlags\Provider from dd-trace-php for flag evaluation
• Exposure events are flushed immediately after evaluation in the weblog endpoint for test observability
• Parametric server uses the same Amphp router pattern as existing endpoints

[github-actions]

CODEOWNERS have been resolved as:

utils/build/docker/php/common/ffe.php                                   @DataDog/apm-php @DataDog/system-tests-core
manifests/php.yml                                                       @DataDog/apm-php @DataDog/asm-php
utils/build/docker/php/apache-mod/php.conf                              @DataDog/apm-php @DataDog/system-tests-core
utils/build/docker/php/parametric/composer.json                         @DataDog/apm-php @DataDog/system-tests-core
utils/build/docker/php/parametric/server.php                            @DataDog/apm-php @DataDog/system-tests-core

[datadog-official]

⚠️ Tests

✨ Fix all issues with Cursor

⚠️ Warnings

🧪 270 Tests failed

tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start.test_ffe_rc_down_from_start[apache-mod-7.0] from system_tests_suite (Datadog) (Fix with Cursor)

AssertionError: Flag evaluation failed: 
assert 500 == 200
 +  where 500 = HttpResponse(status_code:500, headers:{'Date': 'Wed, 11 Feb 2026 17:37:07 GMT', 'Server': 'Apache/2.4.66 (Debian)', 'X...ed-By': 'PHP/7.0.33', 'Content-Length': '0', 'Connection': 'close', 'Content-Type': 'text/html; charset=UTF-8'}, text:).status_code
 +    where HttpResponse(status_code:500, headers:{'Date': 'Wed, 11 Feb 2026 17:37:07 GMT', 'Server': 'Apache/2.4.66 (Debian)', 'X...ed-By': 'PHP/7.0.33', 'Content-Length': '0', 'Connection': 'close', 'Content-Type': 'text/html; charset=UTF-8'}, text:) = <tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start object at 0x7f0dc0607440>.r

self = <tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start object at 0x7f0dc0607440>

    def test_ffe_rc_down_from_start(self):
        """Test that default value is returned when RC is down from start."""
        # Verify tracer received 503 from RC
...

tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start.test_ffe_rc_down_from_start[apache-mod-7.0-zts] from system_tests_suite (Datadog) (Fix with Cursor)

AssertionError: Flag evaluation failed: 
assert 500 == 200
 +  where 500 = HttpResponse(status_code:500, headers:{'Date': 'Wed, 11 Feb 2026 17:37:42 GMT', 'Server': 'Apache/2.4.66 (Debian)', 'X...ed-By': 'PHP/7.0.33', 'Content-Length': '0', 'Connection': 'close', 'Content-Type': 'text/html; charset=UTF-8'}, text:).status_code
 +    where HttpResponse(status_code:500, headers:{'Date': 'Wed, 11 Feb 2026 17:37:42 GMT', 'Server': 'Apache/2.4.66 (Debian)', 'X...ed-By': 'PHP/7.0.33', 'Content-Length': '0', 'Connection': 'close', 'Content-Type': 'text/html; charset=UTF-8'}, text:) = <tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start object at 0x7ff66822f560>.r

self = <tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start object at 0x7ff66822f560>

    def test_ffe_rc_down_from_start(self):
        """Test that default value is returned when RC is down from start."""
        # Verify tracer received 503 from RC
...

tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start.test_ffe_rc_down_from_start[apache-mod-7.1] from system_tests_suite (Datadog) (Fix with Cursor)

AssertionError: Flag evaluation failed: 
assert 500 == 200
 +  where 500 = HttpResponse(status_code:500, headers:{'Date': 'Wed, 11 Feb 2026 17:36:48 GMT', 'Server': 'Apache/2.4.66 (Debian)', 'X...ed-By': 'PHP/7.1.33', 'Content-Length': '0', 'Connection': 'close', 'Content-Type': 'text/html; charset=UTF-8'}, text:).status_code
 +    where HttpResponse(status_code:500, headers:{'Date': 'Wed, 11 Feb 2026 17:36:48 GMT', 'Server': 'Apache/2.4.66 (Debian)', 'X...ed-By': 'PHP/7.1.33', 'Content-Length': '0', 'Connection': 'close', 'Content-Type': 'text/html; charset=UTF-8'}, text:) = <tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start object at 0x7f0c48513c20>.r

self = <tests.ffe.test_dynamic_evaluation.Test_FFE_RC_Down_From_Start object at 0x7f0c48513c20>

    def test_ffe_rc_down_from_start(self):
        """Test that default value is returned when RC is down from start."""
        # Verify tracer received 503 from RC
...

View all

ℹ️ Info

❄️ No new flaky tests detected

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