require_once 'vendor/autoload.php'; // assuming this is where the Logger package library is located use Monolog\Logger; // retrieve the root logger object $rootLogger = Logger::getRootLogger(); // use the root logger to log an info message $rootLogger->info('This is an info message');
require_once 'vendor/autoload.php'; use Psr\Log\LoggerInterface; use Monolog\Logger; // retrieve the root logger object $rootLogger = Logger::getRootLogger(); // check if the root logger is an instance of the PSR-3 LoggerInterface if ($rootLogger instanceof LoggerInterface) { // use the root logger to log a debug message $rootLogger->debug('This is a debug message'); } else { echo 'The root logger is not an instance of LoggerInterface.'; }In this example, we first import the LoggerInterface from the Psr\Log package library and the Logger class from the Monolog package library. We then use the getRootLogger function to retrieve the root logger object, and check if it is an instance of the PSR-3 LoggerInterface. If it is, we use the root logger to log a debug message. Otherwise, we output a message indicating that the root logger is not an instance of LoggerInterface. Package library: Monolog