pushHandler(new StreamHandler('mylogfile.log', Logger::INFO)); // Write a message to the log $log->info('User successfully logged in!'); ?>This example demonstrates how to use a logging library called Monolog, which is a popular PHP package for managing logs. It shows how to initialize a logger for an application called "myapp", add a file handler to the logger, and write a message to the log at the INFO level. Overall, PHP Log set is a powerful tool that can be used to enhance the functionality of PHP applications by allowing developers to track and analyze various events. It is often used in combination with logging libraries like Monolog to provide more advanced features such as log rotation, filtering, and formatting.