Config::Tiny - Read/Write .ini style files with as little code as possible


Config::Tiny - Read/Write .ini style files with as little code as possible


    # In your configuration file
    three= four
    Foo =Bar
    # In your program
    use Config::Tiny;
    # Create a config
    my $Config = Config::Tiny->new();
    # Open the config
    $Config = Config::Tiny->read( 'file.conf' );
    # Reading properties
    my $rootproperty = $Config->{_}->{rootproperty};
    my $one = $Config->{section}->{one};
    my $Foo = $Config->{section}->{Foo};
    # Changing data
    $Config->{newsection} = { this => 'that' }; # Add a section
    $Config->{section}->{Foo} = 'Not Bar!';     # Change a value
    delete $Config->{_};                        # Delete a value or section
    # Save a config
    $Config->write( 'file.conf' );


Config::Tiny is a perl class to read and write .ini style configuration files with as little code as possible, reducing load time and memory overhead. Most of the time it is accepted that Perl applications use a lot of memory and modules. The ::Tiny family of modules is specifically intended to provide an ultralight alternative to the standard modules.

This module is primarily for reading human written files, and anything we write shouldn't need to have documentation/comments. If you need something with more power move up to the Config::Simple manpage, the Config::General manpage or one of the many other Config:: modules. To rephrase, the Config::Tiny manpage does not preserve your comments, whitespace, or the order of your config file.


Files are the same format as for windows .ini files. For example:


If a property is outside of a section at the beginning of a file, it will be assigned to the "root section", available at $Config->{_}.

Lines starting with '#' or ';' are considered comments and ignored, as are blank lines.

When writing back to the config file, all comments, custom whitespace, and the ordering of your config file elements is discarded. If you need to keep the human elements of a config when writing back, upgrade to something better, this module is not for you.



The constructor new creates and returns an empty Config::Tiny object.

read $filename

The read constructor reads a config file, and returns a new Config::Tiny object containing the properties in the file.

Returns the object on success, or undef on error.

When read fails, Config::Tiny sets an error message internally you can recover via <Config::Tiny-errstr>>. Although in some cases a failed read will also set the operating system error variable $!, not all errors do and you should not rely on using the $! variable.

read_string $string;

The read_string method takes as argument the contents of a config file as a string and returns the Config::Tiny object for it.

write $filename

The write method generates the file content for the properties, and writes it to disk to the filename specified.

Returns true on success or undef on error.


Generates the file content for the object and returns it as a string.


When an error occurs, you can retrieve the error message either from the $Config::Tiny::errstr variable, or using the errstr() method.


This method is called to produce the string used to represent the property in a section. It is passed the section name and property name.


This is a convenience is called to set a value found in the parsed config string. It is passed the section name, property name, and value.


Bugs should be reported via the CPAN bug tracker at

For other issues, or commercial enhancement or support, contact the author.


Adam Kennedy <>


Thanks to Sherzod Ruzmetov <> for the Config::Simple manpage, which inspired this module by being not quite ``simple'' enough for me :)


the Config::Simple manpage, the Config::General manpage,


Copyright 2002 - 2007 Adam Kennedy.

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

The full text of the license can be found in the LICENSE file included with this module.

 Config::Tiny - Read/Write .ini style files with as little code as possible