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2020-03-31 15:31:03 +02:00

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# Package Versions
This utility provides quick and easy access to version information of composer dependencies.
This information is derived from the ```composer.lock``` file which is (re)generated during ```composer install``` or ```composer update```.
```php
$version = \PackageVersions\Versions::getVersion('ocramius/package-versions');
var_dump($version); // 1.0.0@0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33
```
[![Build Status](https://travis-ci.org/Ocramius/PackageVersions.svg?branch=master)](https://travis-ci.org/Ocramius/PackageVersions)
[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/Ocramius/PackageVersions/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/Ocramius/PackageVersions/?branch=master)
[![Code Coverage](https://scrutinizer-ci.com/g/Ocramius/PackageVersions/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/Ocramius/PackageVersions/?branch=master)
[![Downloads](https://img.shields.io/packagist/dt/ocramius/package-versions.svg)](https://packagist.org/packages/ocramius/package-versions)
[![Packagist](https://img.shields.io/packagist/v/ocramius/package-versions.svg)](https://packagist.org/packages/ocramius/package-versions)
[![Dependencies](https://tidelift.com/badges/github/packagist/ocramius%2Fpackage-versions)](https://tidelift.com/subscription/pkg/packagist-ocramius%2Fpackage-versions?utm_source=packagist-ocramius%2Fpackage-versions&utm_medium=readme)
### Installation
```sh
composer require ocramius/package-versions
```
It is suggested that you use a optimized composer autoloader in order to prevent
autoload I/O when accessing the `PackageVersions\Versions` API:
Therefore you should use `optimize-autoloader: true` in your composer.json:
```
...
"config": {
"optimize-autoloader": true
},
...
```
see https://getcomposer.org/doc/06-config.md#optimize-autoloader
In case you manually generate your autoloader via the CLI use the `--optimize` flag:
```sh
composer dump-autoload --optimize
```
### Use-cases
This repository implements `PackageVersions\Versions::getVersion()` in such a way that no IO
happens when calling it, because the list of package versions is compiled during composer
installation.
This is especially useful when you want to generate assets/code/artifacts that are computed from
the current version of a certain dependency. Doing so at runtime by checking the installed
version of a package would be too expensive, and this package mitigates that.
## Professional Support
[Professionally supported `ocramius/package-versions` is available through Tidelift](https://tidelift.com/subscription/pkg/packagist-ocramius-package-versions?utm_source=packagist-ocramius-package-versions&utm_medium=referral&utm_campaign=readme).
You can also contact the maintainer at ocramius@gmail.com for looking into issues related to this package
in your private projects.