Library for handling version information and constraints

You can add this library as a local, per-project dependency to your project using Composer:

composer require phar-io/version 

If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:

composer require --dev phar-io/version 

A Version constraint describes a range of versions or a discrete version number. The format of version numbers follows the schema of semantic versioning: <major>.<minor>.<patch>. A constraint might contain an operator that describes the range.

Beside the typical mathematical operators like <=, >=, there are two special operators:

Caret operator: ^1.0 can be written as >=1.0.0 <2.0.0 and read as »every Version within major version 1«.

Tilde operator: ~1.0.0 can be written as >=1.0.0 <1.1.0 and read as »every version within minor version 1.1. The behavior of tilde operator depends on whether a patch level version is provided or not. If no patch level is provided, tilde operator behaves like the caret operator: ~1.0 is identical to ^1.0.

Parsing version constraints and check discrete versions for compliance:

usePharIo\Version\Version; usePharIo\Version\VersionConstraintParser; $parser = newVersionConstraintParser(); $caret_constraint = $parser->parse( '^7.0' ); $caret_constraint->complies( newVersion( '7.0.17' ) ); // true$caret_constraint->complies( newVersion( '7.1.0' ) ); // true$caret_constraint->complies( newVersion( '6.4.34' ) ); // false$tilde_constraint = $parser->parse( '~1.1.0' ); $tilde_constraint->complies( newVersion( '1.1.4' ) ); // true$tilde_constraint->complies( newVersion( '1.2.0' ) ); // false

As of version 2.0.0, pre-release labels are supported and taken into account when comparing versions:

$leftVersion = newPharIo\Version\Version('3.0.0-alpha.1'); $rightVersion = newPharIo\Version\Version('3.0.0-alpha.2'); $leftVersion->isGreaterThan($rightVersion); // false$rightVersion->isGreaterThan($leftVersion); // true