DataDog/dd-trace-php 1.21.0

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Changed

• The sidecar is now always spawned unconditionally, regardless of configuration #3912

Internal

• Bump Rust MSRV to 1.87 #3926

Tracer

Added

• Add PHP feature flag evaluation including evaluation metrics via OTLP #3906, #3909, #3910, #3911
• Add dynamic_service DBM propagation mode as a convenience alias for service mode with base hash injection; this mode will replace service on the long term #3940
• Add DD_DBM_ALWAYS_APPEND_SQL_COMMENT to unconditionally append SQL comments in DBM regardless of sampling #3954
• Recognize PCF Garden container IDs for Cloud Foundry deployments DataDog/libdatadog#2025

Fixed

• Fix remote config not being delivered after forking #3958
• Fix span pointer invalidation crash during inferred span serialization with DD_TRACE_INFERRED_PROXY_SERVICES_ENABLED #3934
• Fix buffer overflow in autoload path construction for oversized class/path names #3932
• Fix Swoole integration parsing the POST body regardless of DD_TRACE_HTTP_POST_DATA_PARAM_ALLOWED #3931
• Guard JIT blacklist rewrite to prevent crashes with non-tracing JIT metadata #3929
• Fix OTel polyfill post hooks with :void return type overwriting the instrumented function's actual return value #3920
• Fix span stats broken for nested services due to incorrect top_level span detection #3916
• Fix php.compilation.total_time_ms reporting values 1000x too large (microseconds labeled as milliseconds) #3915 (thank you @dortort!)
• Fix memory corruption of INIs in ZTS builds #3898
• Fix data race in curl header assignment (non-atomic write to _Atomic field) #3945
• Fix sample rate normalization to 0..1 range, preventing incorrect Knuth hash computation #3935
• Fix multi-request failures caused by incorrect rinit ordering after tracer/ext split #3946

Internal

• Split the tracer code into a separate tracer/ directory within the extension #3912
• Improve crashtracker reliability: socket-based thread collection, incomplete stack handling, and language:native tag DataDog/libdatadog#2080, DataDog/libdatadog#2079, DataDog/libdatadog#2083

Profiling

Fixed

• Fix macOS release builds for the profiler #3923

Internal

• Support PHP DEBUG builds for the profiler, enabling ASAN testing in CI #3908

AppSec

Added

• Collect x-datadog-endpoint-scan and x-datadog-security-test security testing headers as span tags on HTTP entry spans, independent of DD_TRACE_HEADER_TAGS and AppSec enablement #3925

Fixed

• Fix out-of-bounds iteration in PHP <8.1 backtrace HashTable loop in the AppSec backtrace collection path #3933