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62 lines
1.5 KiB
Markdown
62 lines
1.5 KiB
Markdown
# PSR Clock
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This repository holds the interface for [PSR-20][psr-url].
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Note that this is not a clock of its own. It is merely an interface that
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describes a clock. See the specification for more details.
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## Installation
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```bash
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composer require psr/clock
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```
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## Usage
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If you need a clock, you can use the interface like this:
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```php
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<?php
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use Psr\Clock\ClockInterface;
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class Foo
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{
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private ClockInterface $clock;
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public function __construct(ClockInterface $clock)
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{
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$this->clock = $clock;
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}
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public function doSomething()
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{
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/** @var DateTimeImmutable $currentDateAndTime */
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$currentDateAndTime = $this->clock->now();
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// do something useful with that information
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}
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}
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```
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You can then pick one of the [implementations][implementation-url] of the interface to get a clock.
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If you want to implement the interface, you can require this package and
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implement `Psr\Clock\ClockInterface` in your code.
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Don't forget to add `psr/clock-implementation` to your `composer.json`s `provides`-section like this:
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```json
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{
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"provides": {
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"psr/clock-implementation": "1.0"
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}
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}
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```
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And please read the [specification text][specification-url] for details on the interface.
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[psr-url]: https://www.php-fig.org/psr/psr-20
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[package-url]: https://packagist.org/packages/psr/clock
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[implementation-url]: https://packagist.org/providers/psr/clock-implementation
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[specification-url]: https://github.com/php-fig/fig-standards/blob/master/proposed/clock.md
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