Driver

Methods

emergency(string $message, array $context) : void

System is unusable.
alert(string $message, array $context) : void

Action must be taken immediately.
critical(string $message, array $context) : void

Critical conditions.
error(string $message, array $context) : void

Runtime errors that do not require immediate action but should typically be logged and monitored.
warning(string $message, array $context) : void

Exceptional occurrences that are not errors.
notice(string $message, array $context) : void

Normal but significant events.
info(string $message, array $context) : void

Interesting events.
debug(string $message, array $context) : void

Detailed debug information.
log(variable $level, string $message, array $context) : void

Logs with an arbitrary level.

Methods Details

public function emergency(string $message, array $context)

System is unusable.
public function alert(string $message, array $context)

Action must be taken immediately.

Example: Entire website down, database unavailable, etc. This should trigger the SMS alerts and wake you up.
public function critical(string $message, array $context)

Critical conditions.

Example: Application component unavailable, unexpected exception.
public function error(string $message, array $context)

Runtime errors that do not require immediate action but should typically be logged and monitored.
public function warning(string $message, array $context)

Exceptional occurrences that are not errors.

Example: Use of deprecated APIs, poor use of an API, undesirable things that are not necessarily wrong.
public function notice(string $message, array $context)

Normal but significant events.
public function info(string $message, array $context)

Interesting events.

Example: User logs in, SQL logs.
public function debug(string $message, array $context)

Detailed debug information.
public abstract function log(variable $level, string $message, array $context)

Logs with an arbitrary level.