use Monolog\Logger; use Monolog\Handler\StreamHandler; $log = new Logger('application'); $log->pushHandler(new StreamHandler('path/to/your.log', Logger::WARNING)); $log->error('Error message'); $log->warning('Warning message'); $log->info('Info message');In this code block, the getLogger function creates a new logger instance with the name 'application'. Then, it adds a new stream handler to the logger that writes messages with a severity of warning or higher to the specified log file. After that, the error, warning, and info messages are logged using the logger instance log, with different levels. By using getLogger with Monolog, developers can easily create a flexible and powerful logging mechanism that suits their needs.