Configuretion (root) Element A configuration element consists of optional renderer elements, appender elements, categories and an optional root element. The "threshold" attribute takes a level value such that all logging statements with a level equal or below this value are disabled. Setting the "debug" enable the printing of internal log4j logging statements. By default, debug attribute is "null", meaning that we not do touch internal log4j logging settings. The "null" value for the threshold attribute can be misleading. The threshold field of a repository cannot be set to null. The "null" value for the threshold attribute simply means don't touch the threshold field, the threshold field keeps its old value. The "null" value in debug means "turn off debugging" all debug info warn error fatal off null true false null Renderers renderer elements allow the user to customize the conversion of message objects to String. Appenders Appenders must have a name and a class. Appenders may contain an error handler, a layout, optional parameters and filters. They may also reference (or include) other appenders. error handler tag has no effects since log4php does not handle errors. true false 0.2 0.3 true false