Lightweight configuration file loader that supports PHP, INI, XML, JSON, and YAML files

1.0.1 2018-03-31 13:21 UTC


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Config is a file configuration loader that supports PHP, INI, XML, JSON, and YML files.


Config requires PHP 5.5.9+.

IMPORTANT: If you want to use YAML files, require the Symfony Yaml component in your composer.json.


The supported way of installing Config is via Composer.

$ composer require hassankhan/config


Config is designed to be very simple and straightforward to use. All you can do with it is load, get, and set.

Loading files

The Config object can be created via the factory method load(), or by direct instantiation:

use Noodlehaus\Config;

// Load a single file
$conf = Config::load('config.json');
$conf = new Config('config.json');

// Load values from multiple files
$conf = new Config(['config.json', 'config.xml']);

// Load all supported files in a directory
$conf = new Config(__DIR__ . '/config');

// Load values from optional files
$conf = new Config(['config.dist.json', '?config.json']);

Files are parsed and loaded depending on the file extension. Note that when loading multiple files, entries with duplicate keys will take on the value from the last loaded file.

When loading a directory, the path is globed and files are loaded in by name alphabetically.

Getting values

Getting values can be done in three ways. One, by using the get() method:

// Get value using key
$debug = $conf->get('debug');

// Get value using nested key
$secret = $conf->get('security.secret');

// Get a value with a fallback
$ttl = $conf->get('app.timeout', 3000);

The second method, is by using it like an array:

// Get value using a simple key
$debug = $conf['debug'];

// Get value using a nested key
$secret = $conf['security.secret'];

// Get nested value like you would from a nested array
$secret = $conf['security']['secret'];

The third method, is by using the all() method:

// Get all values
$data = $conf->all();

Setting values

Although Config supports setting values via set() or, via the array syntax, any changes made this way are NOT reflected back to the source files. By design, if you need to make changes to your configuration files, you have to do it manually.

$conf = Config::load('config.json');

// Sample value from our config file
assert($conf['secret'] == '123');

// Update config value to something else
$conf['secret'] = '456';

// Reload the file
$conf = Config::load('config.json');

// Same value as before
assert($conf['secret'] == '123');

// This will fail
assert($conf['secret'] == '456');

Using with default values

Sometimes in your own projects you may want to use Config for storing application settings, without needing file I/O. You can do this by extending the AbstractConfig class and populating the getDefaults() method:

class MyConfig extends AbstractConfig
    protected function getDefaults()
        return array(
            'host' => 'localhost',
            'port'    => 80,
            'servers' => array(
            'application' => array(
                'name'   => 'configuration',
                'secret' => 's3cr3t'

Merging instances

You may want merging multiple Config instances:

$conf1 = Config::load('conf1.json');
$conf2 = Config::load('conf2.json');

Examples of supported configuration files

Examples of simple, valid configuration files can be found here.


$ phpunit


Please see CONTRIBUTING for details.


If you discover any security related issues, please email contact@hassankhan.me instead of using the issue tracker.



The MIT License (MIT). Please see License File for more information.