INI Settings

This is the configuration list supported in php.ini.

Configuration Item	Description	Default Value
skywalking_agent.enable	Enable skywalking_agent extension or not.	Off
skywalking_agent.log_file	Log file path.	/tmp/skywalking-agent.log
skywalking_agent.log_level	Log level: one of OFF, TRACE, DEBUG, INFO, WARN, ERROR.	INFO
skywalking_agent.runtime_dir	Skywalking agent runtime directory.	/tmp/skywalking-agent
skywalking_agent.server_addr	Address of skywalking oap server. Only available when reporter_type is grpc.	127.0.0.1:11800
skywalking_agent.service_name	Application service name.	hello-skywalking
skywalking_agent.skywalking_version	Skywalking version, 8 or 9.	8
skywalking_agent.authentication	Skywalking authentication token, let it empty if the backend isn’t enabled. Only available when reporter_type is grpc.
skywalking_agent.worker_threads	Skywalking worker threads, 0 will auto set as the cpu core size.	0
skywalking_agent.enable_tls	Wether to enable tls for gPRC, default is false. Only available when reporter_type is grpc.	Off
skywalking_agent.ssl_trusted_ca_path	The gRPC SSL trusted ca file. Only available when reporter_type is grpc.
skywalking_agent.ssl_key_path	The private key file. Enable mTLS when ssl_key_path and ssl_cert_chain_path exist. Only available when reporter_type is grpc.
skywalking_agent.ssl_cert_chain_path	The certificate file. Enable mTLS when ssl_key_path and ssl_cert_chain_path exist. Only available when reporter_type is grpc.
skywalking_agent.heartbeat_period	Agent heartbeat report period. Unit, second.	30
skywalking_agent.properties_report_period_factor	The agent sends the instance properties to the backend every heartbeat_period * properties_report_period_factor seconds.	10
skywalking_agent.enable_zend_observer	Whether to use zend observer instead of zend_execute_ex to hook the functions, this feature is only available for PHP8+.	Off
skywalking_agent.reporter_type	Reporter type, optional values are grpc and kafka.	grpc
skywalking_agent.kafka_bootstrap_servers	A list of host/port pairs to use for connect to the Kafka cluster. Only available when reporter_type is kafka.
skywalking_agent.kafka_producer_config	Configure Kafka Producer configuration in JSON format {"key": "value}. Only available when reporter_type is kafka.	{}