Composer, the open source framework for dependency management for PHP applications, is available in version 2.0. In addition to some changes, the update brings fundamental innovations and revises the error reporting. The primary goal of the update is to improve the performance of the framework.

Jordi Boggiano, the developer behind the framework, has revised the protocol that is used between Composer and packagist.org is used. In addition, changes have been made to the architecture, such as the way dependency updates are performed internally. For developers, these changes are intended to result in more deterministic updates. The used local status of the vendor directory should no longer hinder updates.

Improved performance and new runtime features With With the changes to the resolution of dependencies and the parallel downloading of files with the help of adapted curl and constraint evaluation, the development team would like to improve both speed and memory usage. In addition, the use of require or remove and partial updates will be faster, since Composer now only loads the metadata of the packages that are changed.

The developers behind the framework have also added a new platform check step to Composer. When initializing vendor / autoload.php it is checked whether the PHP version / extension used matches what is stated in the dependencies is expected, and fails on the other side.

Better error reporting In addition, there is a new class Composer InstalledVersions , which the framework loads automatically in every project and is available in runtime should. The development team has also worked on bug reporting, which is supposed to show more clearly when dependencies cannot be resolved.

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