Log::Log4perl::Level - phpMan

NAME
    Log::Log4perl::Level - Predefined log levels

SYNOPSIS
      use Log::Log4perl::Level;
      print $ERROR, "\n";

      # -- or --

      use Log::Log4perl qw(:levels);
      print $ERROR, "\n";

DESCRIPTION
    "Log::Log4perl::Level" simply exports a predefined set of *Log4perl* log
    levels into the caller's name space. It is used internally by
    "Log::Log4perl". The following scalars are defined:

        $OFF
        $FATAL
        $ERROR
        $WARN
        $INFO
        $DEBUG
        $TRACE
        $ALL

    "Log::Log4perl" also exports these constants into the caller's namespace
    if you pull it in providing the ":levels" tag:

        use Log::Log4perl qw(:levels);

    This is the preferred way, there's usually no need to call
    "Log::Log4perl::Level" explicitly.

    The numerical values assigned to these constants are purely virtual,
    only used by Log::Log4perl internally and can change at any time, so
    please don't make any assumptions. You can test for numerical equality
    by directly comparing two level values, that's ok:

        if( get_logger()->level() == $DEBUG ) {
            print "The logger's level is DEBUG\n";
        }

    But if you want to figure out which of two levels is more verbose, use
    Log4perl's own comparator:

        if( Log::Log4perl::Level::isGreaterOrEqual( $level1, $level2 ) ) {
            print Log::Log4perl::Level::to_level( $level1 ),
                " is equal or more verbose than ",
                Log::Log4perl::Level::to_level( $level2 ), "\n";
        }

    If the caller wants to import level constants into a different
    namespace, it can be provided with the "use" command:

        use Log::Log4perl::Level qw(MyNameSpace);

    After this $MyNameSpace::ERROR, $MyNameSpace::INFO etc. will be defined
    accordingly.

  Numeric levels and Strings
    Level variables like $DEBUG or $WARN have numeric values that are
    internal to Log4perl. Transform them to strings that can be used in a
    Log4perl configuration file, use the c<to_level()> function provided by
    Log::Log4perl::Level:

        use Log::Log4perl qw(:easy);
        use Log::Log4perl::Level;

            # prints "DEBUG"
        print Log::Log4perl::Level::to_level( $DEBUG ), "\n";

    To perform the reverse transformation, which takes a string like "DEBUG"
    and converts it into a constant like $DEBUG, use the to_priority()
    function:

        use Log::Log4perl qw(:easy);
        use Log::Log4perl::Level;

        my $numval = Log::Log4perl::Level::to_priority( "DEBUG" );

    after which $numval could be used where a numerical value is required:

        Log::Log4perl->easy_init( $numval );

LICENSE
    Copyright 2002-2013 by Mike Schilli <m AT perlmeister.com> and Kevin Goess
    <cpan AT goess.org>.

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

AUTHOR
    Please contribute patches to the project on Github:

        http://github.com/mschilli/log4perl

    Send bug reports or requests for enhancements to the authors via our

    MAILING LIST (questions, bug reports, suggestions/patches):
    log4perl-devel AT lists.net

    Authors (please contact them via the list above, not directly): Mike
    Schilli <m AT perlmeister.com>, Kevin Goess <cpan AT goess.org>

    Contributors (in alphabetical order): Ateeq Altaf, Cory Bennett, Jens
    Berthold, Jeremy Bopp, Hutton Davidson, Chris R. Donnelly, Matisse
    Enzer, Hugh Esco, Anthony Foiani, James FitzGibbon, Carl Franks, Dennis
    Gregorovic, Andy Grundman, Paul Harrington, Alexander Hartmaier David
    Hull, Robert Jacobson, Jason Kohles, Jeff Macdonald, Markus Peter, Brett
    Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope, Lars Thegler,
    David Viner, Mac Yang.