This is a read-only subtree split of https://github.com/open-telemetry/opentelemetry-php-contrib.
Please read https://opentelemetry.io/docs/instrumentation/php/automatic/ for instructions on how to install and configure the extension and SDK.
Auto-instrumentation hooks are registered via composer, which will:
- create spans automatically for each async HTTP request that is sent
- add a
traceparent
header to the request to facilitate distributed tracing
The extension can be disabled via runtime configuration:
OTEL_PHP_DISABLED_INSTRUMENTATIONS=http-async-client
Request headers can be added as span attributes, if the header's name is found in the php.ini
variable: otel.instrumentation.http.request_headers