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composer/semver

Semver library that offers utilities, version constraint parsing and validation.

Originally written as part of composer/composer, now extracted and made available as a stand-alone library.

![Build Status](https://travis-ci.org/composer/semver.svg?branch=master)

Installation

Install the latest version with:

```bash $ composer require composer/semver ```

Requirements

  • PHP 5.3.2 is required but using the latest version of PHP is highly recommended.

Version Comparison

For details on how versions are compared, refer to the https://getcomposer.org/doc/articles/versions.md "Versions" article in the documentation section of the getcomposer.org website.

Basic usage

Comparator

The Composer\Semver\Comparator class provides the following methods for comparing versions:

  • greaterThan($v1, $v2)
  • greaterThanOrEqualTo($v1, $v2)
  • lessThan($v1, $v2)
  • lessThanOrEqualTo($v1, $v2)
  • equalTo($v1, $v2)
  • notEqualTo($v1, $v2)

Each function takes two version strings as arguments. For example:

```php use Composer;

Comparator::greaterThan('1.25.0', '1.24.0'); // 1.25.0 > 1.24.0 ```

Semver

The Composer\Semver\Semver class provides the following methods:

  • satisfies($version, $constraints)
  • satisfiedBy(array $versions, $constraint)
  • sort($versions)
  • rsort($versions)

License

composer/semver is licensed under the MIT License, see the LICENSE file for details.