docs/config.md
:::{php:namespace} Atk4\Core
:::
# Config Trait
:::{php:trait} ConfigTrait
:::
Agile Core implements support for read configuration files of different formats
## Introduction
This trait can be added to any object to load a configuration.
Configuration files can be of 4 types: php, php-inline, json, yaml.
Loading can be done in this way:
```
$object = new Object();
$object->readConfig('config.php', 'php');
```
After loading, configuration elements can be retrieved in this way:
```
$object->getConfig('element_key', 'if not defined use this as default');
```
if you need an element that is declared inside an array you can use a special syntax:
```
$object->getConfig('level1_array/level2_array/element_key', 'if not defined use this as default');
```
Element in config can be defined even manually:
```
$object->setConfig('element_key', $element);
```
## Supported Formats
### php
Configuration is defined as a return statement
```
return [
'var A' => new UserClass(),
'var B' => 2,
'var C' => [
'2nd-level' => 'var D',
],
];
```
### JSON
Configuration is defined as json
### YAML
Configuration is defined as yaml
## Methods
:::{php:method} readConfig($files = ['config.php'], $format = 'php')
Read config file or files and store it in $config property
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:::{php:method} setConfig($paths = [], $value = null)
Manually set configuration option
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:::{php:method} getConfig($path, $defaultValue = null)
Get configuration element
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