seldaek / semver

Semantic versioning utilities with the addition of version constraints parsing and checking.

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.

Installation

Install the latest version with:

$ 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 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:

use Composer\Semver\Comparator;

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

Semver

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

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

License

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