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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 ``` [](https://travis-ci.org/Ocramius/PackageVersions) [](https://scrutinizer-ci.com/g/Ocramius/PackageVersions/?branch=master) [](https://scrutinizer-ci.com/g/Ocramius/PackageVersions/?branch=master) [](https://packagist.org/packages/ocramius/package-versions) [](https://packagist.org/packages/ocramius/package-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.