Customize logger

The logger logs information about your experiments to help you with debugging. You can customize where log information is sent and what kind of information is tracked.

The PHP SDK comes with a default Logger implementation. To configure the log level threshold, you can pass the log level as an argument to the DefaultLogger constructor.

use Monolog\Logger;
use Optimizely\Logger\DefaultLogger;

/**
 * To set a log level choose one of the following:
 * 
 * INFO: Logger.INFO
 * DEBUG: Logger.DEBUG
 * WARNING: Logger.WARNING
 * ERROR: Logger.ERROR
 * CRITICAL: Logger.CRITICAL
 *
 * To define a different minimum logging level pass it in during initialization
 * The example below shows a minimum logging level of WARNING and outputs
 * to standard out
 */

$optimizelyClient = new Optimizely($datafile, null, new
DefaultLogger(Logger::WARNING, "stdout"));

For finer control over your SDK configuration in a production environment, pass in a custom logger for your Optimizely client. A custom logger is an instance of a class that implements LoggerInterface

Log levels

The table below lists the log levels for the PHP SDK.