||Implemented by classes capable of configuring log4php using a URL.
||Extend and implement this abstract class to create new instances of
Logger or a sub-class of
||Users should extend this class to implement customized logging event filtering.
LoggerAppenderSkeleton, the parent
class of all standard appenders, have built-in filtering rules. It is suggested
that you first use and understand the built-in rules before rushing to write
your own custom filters.
||This class encapsulates the information obtained when parsing formatting
modifiers in conversion modifiers.
||The internal representation of caller location information.
||The internal representation of logging event.