README

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

Requirements

Config requires PHP 8.1+.

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

Installation

The supported way of installing Config is via Composer.

$ composer require camoo/config

Usage

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 Camoo\Config\Config;
use Camoo\Config\Enum\Parser;

// 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']);

// Load a file using specified parser
$conf = new Config('configuration.config', Parser::JSON);

Files are parsed and loaded depending on the file extension or specified parser. If the parser is specified, it will be used for all files. 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.

Warning: Do not include untrusted configuration in PHP format. It could contain and execute malicious code.

Loading string

Configuration from string can be created via the factory method load() or by direct instantiation, with argument $string set to true:

use Camoo\Config\Config;
use Camoo\Config\Enum\Parser;
use Camoo\Config\Parser\Json;
use Camoo\Config\Parser\Yaml;

$settingsJson = <<<FOOBAR
{
  "application": {
    "name": "configuration",
    "secret": "s3cr3t"
  },
  "host": "localhost",
  "port": 80,
  "servers": [
    "host1",
    "host2",
    "host3"
  ]
}
FOOBAR;

$settingsYaml = <<<FOOBAR
application:
    name: configuration
    secret: s3cr3t
host: localhost
port: 80
servers:
- host1
- host2
- host3

FOOBAR;

$conf = Config::load($settingsJson, Parser::JSON, true);
$conf = new Config($settingsYaml, Parser::YAML, true);

Warning: Do not include untrusted configuration in PHP format. It could contain and execute malicious code.

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');

Saving config

It is possible to save the config back to a file in any of the supported formats except PHP.

use use Camoo\Config\Enum\Writer;

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

$ini = $config->toString(Writer::INI); // Encode to string if you want to save the file yourself

$config->toFile('config.yaml');
$config->toFile('config.txt', Writer::SERIALIZE); // you can also force the writer

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 [
            'host' => 'localhost',
            'port'    => 80,
            'servers' => [
                'host1',
                'host2',
                'host3'
            ],
            'application' => [
                'name'   => 'configuration',
                'secret' => 's3cr3t'
            ]
        ];
    }
}

Merging instances

You may want merging multiple Config instances:

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

Examples of supported configuration files

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

Testing

$ phpunit

camoo / config

Maintainers

Details