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The MIT License (MIT)
Copyright (c) 2018 Smiley <smiley@chillerlan.net>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# chillerlan/php-settings-container
A container class for settings objects - decouple configuration logic from your application! Not a DI container.
- [`SettingsContainerInterface`](https://github.com/chillerlan/php-settings-container/blob/main/src/SettingsContainerInterface.php) provides immutable properties with magic getter & setter and some fancy.
[![PHP Version Support][php-badge]][php]
[![version][packagist-badge]][packagist]
[![license][license-badge]][license]
[![Continuous Integration][gh-action-badge]][gh-action]
[![Coverage][coverage-badge]][coverage]
[![Codacy][codacy-badge]][codacy]
[![Packagist downloads][downloads-badge]][downloads]
[php-badge]: https://img.shields.io/packagist/php-v/chillerlan/php-settings-container?logo=php&color=8892BF
[php]: https://www.php.net/supported-versions.php
[packagist-badge]: https://img.shields.io/packagist/v/chillerlan/php-settings-container.svg?logo=packagist
[packagist]: https://packagist.org/packages/chillerlan/php-settings-container
[license-badge]: https://img.shields.io/github/license/chillerlan/php-settings-container.svg
[license]: https://github.com/chillerlan/php-settings-container/blob/main/LICENSE
[coverage-badge]: https://img.shields.io/codecov/c/github/chillerlan/php-settings-container.svg?logo=codecov
[coverage]: https://codecov.io/github/chillerlan/php-settings-container
[codacy-badge]: https://img.shields.io/codacy/grade/bd2467799e2943d2853ce3ebad5af490/v2.x-php7.4?logo=codacy
[codacy]: https://app.codacy.com/gh/chillerlan/php-settings-container/dashboard?branch=v2.x-php7.4
[downloads-badge]: https://img.shields.io/packagist/dt/chillerlan/php-settings-container.svg?logo=packagist
[downloads]: https://packagist.org/packages/chillerlan/php-settings-container/stats
[gh-action-badge]: https://github.com/chillerlan/php-settings-container/workflows/CI/badge.svg
[gh-action]: https://github.com/chillerlan/php-settings-container/actions?query=workflow%3A%22CI%22
## Documentation
### Installation
**requires [composer](https://getcomposer.org)**
*composer.json* (note: replace `dev-main` with a [version constraint](https://getcomposer.org/doc/articles/versions.md#writing-version-constraints), e.g. `^2.1` - see [releases](https://github.com/chillerlan/php-settings-container/releases) for valid versions)
```json
{
"require": {
"php": "^7.4 || ^8.0",
"chillerlan/php-settings-container": "dev-main"
}
}
```
Profit!
## Usage
The `SettingsContainerInterface` (wrapped in`SettingsContainerAbstract` ) provides plug-in functionality for immutable object properties and adds some fancy, like loading/saving JSON, arrays etc.
It takes an `iterable` as the only constructor argument and calls a method with the trait's name on invocation (`MyTrait::MyTrait()`) for each used trait.
### Simple usage
```php
class MyContainer extends SettingsContainerAbstract{
protected $foo;
protected $bar;
}
```
Typed properties in PHP 7.4+:
```php
class MyContainer extends SettingsContainerAbstract{
protected string $foo;
protected string $bar;
}
```
```php
// use it just like a \stdClass
$container = new MyContainer;
$container->foo = 'what';
$container->bar = 'foo';
// which is equivalent to
$container = new MyContainer(['bar' => 'foo', 'foo' => 'what']);
// ...or try
$container->fromJSON('{"foo": "what", "bar": "foo"}');
// fetch all properties as array
$container->toArray(); // -> ['foo' => 'what', 'bar' => 'foo']
// or JSON
$container->toJSON(); // -> {"foo": "what", "bar": "foo"}
// JSON via JsonSerializable
$json = json_encode($container); // -> {"foo": "what", "bar": "foo"}
//non-existing properties will be ignored:
$container->nope = 'what';
var_dump($container->nope); // -> null
```
### Advanced usage
```php
trait SomeOptions{
protected $foo;
protected $what;
// this method will be called in SettingsContainerAbstract::construct()
// after the properties have been set
protected function SomeOptions(){
// just some constructor stuff...
$this->foo = strtoupper($this->foo);
}
// this method will be called from __set() when property $what is set
protected function set_what(string $value){
$this->what = md5($value);
}
}
trait MoreOptions{
protected $bar = 'whatever'; // provide default values
}
```
```php
$commonOptions = [
// SomeOptions
'foo' => 'whatever',
// MoreOptions
'bar' => 'nothing',
];
// now plug the several library options together to a single object
$container = new class ($commonOptions) extends SettingsContainerAbstract{
use SomeOptions, MoreOptions;
};
var_dump($container->foo); // -> WHATEVER (constructor ran strtoupper on the value)
var_dump($container->bar); // -> nothing
$container->what = 'some value';
var_dump($container->what); // -> md5 hash of "some value"
```
### API
#### [`SettingsContainerAbstract`](https://github.com/chillerlan/php-settings-container/blob/main/src/SettingsContainerAbstract.php)
method | return | info
-------- | ---- | -----------
`__construct(iterable $properties = null)` | - | calls `construct()` internally after the properties have been set
(protected) `construct()` | void | calls a method with trait name as replacement constructor for each used trait
`__get(string $property)` | mixed | calls `$this->{'get_'.$property}()` if such a method exists
`__set(string $property, $value)` | void | calls `$this->{'set_'.$property}($value)` if such a method exists
`__isset(string $property)` | bool |
`__unset(string $property)` | void |
`__toString()` | string | a JSON string
`toArray()` | array |
`fromIterable(iterable $properties)` | `SettingsContainerInterface` |
`toJSON(int $jsonOptions = null)` | string | accepts [JSON options constants](http://php.net/manual/json.constants.php)
`fromJSON(string $json)` | `SettingsContainerInterface` |
`jsonSerialize()` | mixed | implements the [`JsonSerializable`](https://www.php.net/manual/en/jsonserializable.jsonserialize.php) interface
## Disclaimer
This might be either an utterly genius or completely stupid idea - you decide. However, i like it and it works.
Also, this is not a dependency injection container. Stop using DI containers FFS.

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{
"name": "chillerlan/php-settings-container",
"description": "A container class for immutable settings objects. Not a DI container. PHP 7.4+",
"homepage": "https://github.com/chillerlan/php-settings-container",
"license": "MIT",
"type": "library",
"minimum-stability": "stable",
"keywords": [
"php7", "helper", "container", "settings", "configuration"
],
"authors": [
{
"name": "Smiley",
"email": "smiley@chillerlan.net",
"homepage": "https://github.com/codemasher"
}
],
"support": {
"issues": "https://github.com/chillerlan/php-settings-container/issues",
"source": "https://github.com/chillerlan/php-settings-container"
},
"require": {
"php": "^7.4 || ^8.0",
"ext-json": "*"
},
"require-dev": {
"phan/phan": "^5.4",
"phpmd/phpmd": "^2.13",
"phpunit/phpunit": "^9.6",
"phpcsstandards/php_codesniffer": "^3.8"
},
"autoload": {
"psr-4": {
"chillerlan\\Settings\\": "src/"
}
},
"autoload-dev": {
"psr-4": {
"chillerlan\\SettingsTest\\": "tests/"
}
},
"scripts": {
"phpunit": "@php vendor/bin/phpunit",
"phan": "@php vendor/bin/phan"
},
"config": {
"lock": false,
"sort-packages": true,
"platform-check": true
}
}

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<?php
/**
* Class SettingsContainerAbstract
*
* @created 28.08.2018
* @author Smiley <smiley@chillerlan.net>
* @copyright 2018 Smiley
* @license MIT
*/
namespace chillerlan\Settings;
use ReflectionClass, ReflectionProperty;
use function get_object_vars, json_decode, json_encode, method_exists, property_exists;
use const JSON_THROW_ON_ERROR;
abstract class SettingsContainerAbstract implements SettingsContainerInterface{
/**
* SettingsContainerAbstract constructor.
*/
public function __construct(iterable $properties = null){
if(!empty($properties)){
$this->fromIterable($properties);
}
$this->construct();
}
/**
* calls a method with trait name as replacement constructor for each used trait
* (remember pre-php5 classname constructors? yeah, basically this.)
*/
protected function construct():void{
$traits = (new ReflectionClass($this))->getTraits();
foreach($traits as $trait){
$method = $trait->getShortName();
if(method_exists($this, $method)){
$this->{$method}();
}
}
}
/**
* @inheritdoc
*/
public function __get(string $property){
if(!property_exists($this, $property) || $this->isPrivate($property)){
return null;
}
$method = 'get_'.$property;
if(method_exists($this, $method)){
return $this->{$method}();
}
return $this->{$property};
}
/**
* @inheritdoc
*/
public function __set(string $property, $value):void{
if(!property_exists($this, $property) || $this->isPrivate($property)){
return;
}
$method = 'set_'.$property;
if(method_exists($this, $method)){
$this->{$method}($value);
return;
}
$this->{$property} = $value;
}
/**
* @inheritdoc
*/
public function __isset(string $property):bool{
return isset($this->{$property}) && !$this->isPrivate($property);
}
/**
* @internal Checks if a property is private
*/
protected function isPrivate(string $property):bool{
return (new ReflectionProperty($this, $property))->isPrivate();
}
/**
* @inheritdoc
*/
public function __unset(string $property):void{
if($this->__isset($property)){
unset($this->{$property});
}
}
/**
* @inheritdoc
*/
public function __toString():string{
return $this->toJSON();
}
/**
* @inheritdoc
*/
public function toArray():array{
return get_object_vars($this);
}
/**
* @inheritdoc
*/
public function fromIterable(iterable $properties):SettingsContainerInterface{
foreach($properties as $key => $value){
$this->__set($key, $value);
}
return $this;
}
/**
* @inheritdoc
*/
public function toJSON(int $jsonOptions = null):string{
return json_encode($this, ($jsonOptions ?? 0));
}
/**
* @inheritdoc
*/
public function fromJSON(string $json):SettingsContainerInterface{
$data = json_decode($json, true, 512, JSON_THROW_ON_ERROR);
return $this->fromIterable($data);
}
/**
* @inheritdoc
* @phan-suppress PhanUndeclaredClassAttribute
*/
#[\ReturnTypeWillChange]
public function jsonSerialize():array{
return $this->toArray();
}
}

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<?php
/**
* Interface SettingsContainerInterface
*
* @created 28.08.2018
* @author Smiley <smiley@chillerlan.net>
* @copyright 2018 Smiley
* @license MIT
*/
namespace chillerlan\Settings;
use JsonSerializable;
/**
* a generic container with magic getter and setter
*/
interface SettingsContainerInterface extends JsonSerializable{
/**
* Retrieve the value of $property
*
* @return mixed|null
*/
public function __get(string $property);
/**
* Set $property to $value while avoiding private and non-existing properties
*
* @param string $property
* @param mixed $value
*/
public function __set(string $property, $value):void;
/**
* Checks if $property is set (aka. not null), excluding private properties
*/
public function __isset(string $property):bool;
/**
* Unsets $property while avoiding private and non-existing properties
*/
public function __unset(string $property):void;
/**
* @see SettingsContainerInterface::toJSON()
*/
public function __toString():string;
/**
* Returns an array representation of the settings object
*/
public function toArray():array;
/**
* Sets properties from a given iterable
*/
public function fromIterable(iterable $properties):SettingsContainerInterface;
/**
* Returns a JSON representation of the settings object
* @see \json_encode()
*/
public function toJSON(int $jsonOptions = null):string;
/**
* Sets properties from a given JSON string
*
* @throws \Exception
* @throws \JsonException
*/
public function fromJSON(string $json):SettingsContainerInterface;
}