System Log Functions

System Log functions are used when you must be certain that a log entry will be written, even if the current transaction rolls back. These kinds of logs are intended for use in debugging or tracking invisible processes, such as a Paypal IPN transaction.

A log can be opened with SysLogOpen, which returns a handle to the log. Log entries are made with SysLogEntry and the log is eventually closed with SysLogClose.

The logs are stored in tables syslogs and syslogs_e.

The guarantee that the log entry will always be written comes at the price of a separate connection to the database for each log. In a debugging situation you can open as many of them as you need, but in a production system they should only be used in highest need.

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