Logging is a process of recording the events or actions taken by a computer program in a log file for future use. A log file is usually a text file that records events chronologically, so that they can be reviewed at any time by the software operator. Logs can be used to monitor and debug applications. They can also be used to provide information to interested parties such as administrators, developers or users. It helps to keep track of what's going on in the code and provides a way to debug problems. PHP Logging libraries are one of the most important parts of a PHP application to ensure that the code is running smoothly and can be debugged when problems occur. Logging helps to keep track of the performance of applications, systems and network activities.
Popular PHP Logging open source libraries among developers include: monolog - Sends your logs to files, sockets, inboxes, databases and various web services; laravel-log-viewer - Laravel log viewer; easy-log-handler - Humanfriendly log files that make you more productive.