https://github.com/chillerlan/php-settings-container
A container class for immutable settings objects. Not a DI container.
https://github.com/chillerlan/php-settings-container
configuration configuration-management php php7 php8 settings settings-management settings-storage
Last synced: 3 months ago
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A container class for immutable settings objects. Not a DI container.
- Host: GitHub
- URL: https://github.com/chillerlan/php-settings-container
- Owner: chillerlan
- License: mit
- Created: 2018-08-27T22:55:29.000Z (almost 8 years ago)
- Default Branch: main
- Last Pushed: 2024-07-17T01:34:52.000Z (almost 2 years ago)
- Last Synced: 2025-05-08T23:44:59.138Z (about 1 year ago)
- Topics: configuration, configuration-management, php, php7, php8, settings, settings-management, settings-storage
- Language: PHP
- Homepage:
- Size: 456 KB
- Stars: 29
- Watchers: 3
- Forks: 5
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
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README
# 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 fancy [property hooks](https://wiki.php.net/rfc/property-hooks) for PHP < 8.4.
[![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/main?logo=codacy
[codacy]: https://app.codacy.com/gh/chillerlan/php-settings-container/dashboard?branch=main
[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://img.shields.io/github/actions/workflow/status/chillerlan/php-settings-container/ci.yml?branch=main&logo=github
[gh-action]: https://github.com/chillerlan/php-settings-container/actions/workflows/ci.yml?query=branch%3Amain
## 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. `^3.0` - see [releases](https://github.com/chillerlan/php-settings-container/releases) for valid versions)
```json
{
"require": {
"php": "^8.4",
"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.
A PHPStan ruleset to exclude errors generated by accessing magic properties on `SettingsContainerInterface` can be found in `rules-magic-access.neon`.
### Simple usage
```php
class MyContainer extends SettingsContainerAbstract{
protected string $foo;
protected string $bar;
}
```
```php
// use it just like a \stdClass (except the properties are fixed)
$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"}
```
By default, non-existing properties will be ignored and return `null`:
```php
$container->nope = 'what';
var_dump($container->nope); // -> null
```
You can change this behaviour by adding the attribute `ThrowOnInvalidProperty` to your container class:
```php
#[ThrowOnInvalidProperty(true)]
class MyContainer extends SettingsContainerAbstract{
// ...
}
$container->nope = 'what'; // -> throws: attempt to write invalid property: "$nope"
```
### Advanced usage
Suppose the following trait from library 1:
```php
trait SomeOptions{
protected string $foo;
protected string $what;
// this method will be called in SettingsContainerAbstract::construct()
// after the properties have been set
protected function SomeOptions():void{
// just some constructor stuff...
$this->foo = strtoupper($this->foo);
}
/*
* special prefixed magic setters & getters ("set_"/"get_" + property name)
*/
// this method will be called from __set() when property $what is set
protected function set_what(string $value):void{
$this->what = md5($value);
}
// this method is called on __get() for the property $what
protected function get_what():string{
return 'hash: '.$this->what;
}
}
```
And another trait from library 2:
```php
trait MoreOptions{
protected string $bar = 'whatever'; // provide default values
}
```
We can now plug the several library options together to a single class/object:
```php
$commonOptions = [
// SomeOptions
'foo' => 'whatever',
// MoreOptions
'bar' => 'nothing',
];
$container = new class ($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); // -> hash: 5946210c9e93ae37891dfe96c3e39614 (custom getter added "hash: ")
```
### A note on property hooks (PHP 8.4+)
Property hooks are called whenever a property is accessed (except from within the hook itself of course), which means that the custom get/set methods this library allows would conflict when a custom method is defined for a property that also has a hook defined.
To prevent double method calls, the internal methods `hasSetHook()` and `hasGetHook()` have been introduced, and are called whenever the magic get/set methods are called: when both, a custom method and a property hook exist, only the property hook will be called.
Public properties will never call the magic get/set, however, their hooks *will* be called. (un)serializing a `SettingsContainerInterface` instance will bypass magic get/set and existing property hooks, while JSON de/encode as will call magic get/set or existing hooks explicitly via the `toArray()` and `fromIterable()` methods.
```php
class PropertyHooksContainer extends SettingsContainerAbstract{
protected string $someValue{
set => doStuff($value);
}
// this method will be ignored in magic calls as a "set" hook on the property exists
protected function set_someValue(string $value):void{
$this->someValue = doOtherStuff($value);
}
// this custom method will be called as the property has no "get" hook
protected function get_someValue():string{
return doWhatever($this->someValue);
}
// this property will never trigger the magic get/set and associated methods
public string $otherValue{
set => doStuff($value);
get => $this->otherValue;
}
}
```
### 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 |
| `__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 |
| `serialize()` | string | implements the [`Serializable`](https://www.php.net/manual/en/serializable.serialize.php) interface |
| `unserialize(string $data)` | void | implements the [`Serializable`](https://www.php.net/manual/en/serializable.unserialize.php) interface |
| `__serialize()` | array | implements the [`Serializable`](https://www.php.net/manual/en/language.oop5.magic.php#object.serialize) interface |
| `__unserialize(array $data)` | void | implements the [`Serializable`](https://www.php.net/manual/en/language.oop5.magic.php#object.unserialize) interface |
#### Internal (protected) methods
| method | return | info |
|--------------------------------------|--------|-------------------------------------------------------------------------------|
| `construct()` | void | calls a method with trait name as replacement constructor for each used trait |
| `isPrivate(string $property)` | bool | private properties are excluded from magic calls |
| `hasSetHook(string $property)` | bool | |
| `hasGetHook(string $property)` | bool | |
## Disclaimer
This might be either an absolutely brilliant or completely stupid idea - you decide (in hindsight it was a great idea I guess - property hooks made their way into PHP 8.4).
Also, this is not a dependency injection container. Stop using DI containers FFS.