Supported Technologies
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OpenTelemetry PHP Distro is a distribution of OpenTelemetry PHP. It inherits OpenTelemetry compatibility and extends runtime features with native components.
Auto-instrumentation scope
Auto-instrumentation captures telemetry for supported frameworks and libraries, but it does not instrument:
- Proprietary or custom framework internals
- Closed-source components without instrumentation hooks
- Application-specific business logic
For unsupported areas, use manual OpenTelemetry instrumentation.
PHP versions
Supported PHP versions: 8.1 to 8.5.
Supported SAPIs
php-cliphp-fpmphp-cgi/fcgimod_php(prefork)
Supported operating systems
- Linux
- Architectures:
x86_64,arm64 - glibc-based systems:
deb,rpm - musl-based systems (Alpine):
apk
- Architectures:
Instrumented frameworks
- Laravel
6.xto13.x - Slim
4.x
Instrumented libraries
- cURL
- HTTP async (
php-http/httplug) - MySQLi
- PDO
- PostgreSQL
- PSR-18 HTTP Client (
psr/http-client)
Included auto-instrumentation packages
| Name | Included from distro version | Package |
|---|---|---|
curl | 1.0 | open-telemetry/opentelemetry-auto-curl |
http-async-client | 1.0 | open-telemetry/opentelemetry-auto-http-async |
laravel | 1.0 | open-telemetry/opentelemetry-auto-laravel |
mysqli | 1.0 | open-telemetry/opentelemetry-auto-mysqli |
pdo | 1.0 | open-telemetry/opentelemetry-auto-pdo |
postgresql | 1.2 | open-telemetry/opentelemetry-auto-postgresql |
psr18 | 0.5 | open-telemetry/opentelemetry-auto-psr18 |
slim | 1.0 | open-telemetry/opentelemetry-auto-slim |
Included metrics packages
| Included from distro version | Package | Emitted metrics |
|---|---|---|
| 0.6.0 | open-telemetry/opentelemetry-metrics-runtime | PHP memory usage, GC cycles, peak memory |
Additional runtime features
- Automatic root span creation
- Root span URL grouping
- Inferred spans
- Attribute-based instrumentation
(
#[WithSpan],#[SpanAttribute]) - Background telemetry sending
- PHP runtime metrics (memory, GC — exported automatically via the native async transport)
Background sending (non-blocking export) works with OTLP http/protobuf
(default). If the exporter or protocol is changed to an unsupported transport
(for example gRPC), export becomes synchronous.
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