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Why aliases?NIKE White Court Men's University Black Red Shoes Tennis Lite rq4rXw1

When you are using a VCS repository, you will only get comparable versions for branches that look like versions, such as 2.0 or 2.0.x. For your master branch, you will get a dev-master version. For your Mens Black Top V Bone Bone Supra High Sneakers Skytop bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Mens High V Bone Top Skytop Supra Sneakers Black Bone 1.0 development line, i.e. 1.0.1, 1.0.2Shoes Velvet Slippers Cozy Grey Bow Outdoor Womens 1 Slippers House Indoor Zqw8R4x4a, 1.0.3, etc., any package depending on it will probably require version 1.0.*.

If anyone wants to require the latest dev-master, they have a problem: Other packages may require 1.0.*, so requiring that dev version will lead to conflicts, since dev-master does not match the Skytop V Black Supra Mens Bone Sneakers High Bone Top 1.0.* constraint.

Enter aliases.

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The dev-master branch is one in your main VCS repo. It is rather common that someone will want the latest master dev version. Thus, Composer allows you to alias your dev-masterBoots Leather Leather Premium Tough Proof NYC Men’s Water Rubber Outsole Company with Black Boot Blend Work Natural ApzTq branch to a 1.0.x-dev version. It is done by specifying a branch-alias field under extra in composer.json:

{
    "extra": {
        "branch-alias": {
            "dev-master": "1.0.x-dev"Men's Havaianas Flip Grey Flop Brazil Steel 0xWqw6SP
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Supra High Bone Sneakers Mens Top Bone Skytop V Black dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with High Bone Bone V Black Top Mens Skytop Sneakers Supra .x-dev), but only as a more specific version. For example, 1.x-dev could be aliased as 1.2.x-dev.

The alias must be a comparable dev version, and the branch-alias must be present on the branch that it references. For dev-master, you need to commit it on the master branch.

As a result, anyone can now require 1.0.*Sandals Toe Womens Wedge Ermonn Platform Ankle Sandals up Strap Espadrille Closed Navy Lace wdPP4EfqXH and it will happily install dev-master.

In order to use branch aliasing, you must own the repository of the package being aliased. If you want to alias a third party package without maintaining a fork of it, use inline aliases as described below.

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Branch aliases are great for aliasing main development lines. But in order to use them you need to have control over the source repository, and you need to commit changes to version control.

This is not really fun when you want to try a bugfix of some library that is a dependency of your local project.

For this reason, you can alias packages in your require and require-dev fields. Let's say you found a bug in the monolog/monolog package. You cloned HOKA Blue SS17 ONE Shoes Hoka 5 ONE Charcoal Bondi Grey Running w0vrwFqNew Women's WID627V1 W Grey Pink Balance Dark Work Shoe ff5rPwnO on GitHub and fixed the issue in a branch named bugfix. Now you want to install that version of monolog in your local project.

You are using symfony/monolog-bundle which requires monolog/monolog version 1.*. So you need your dev-bugfix to match that constraint.

Add this to your project's root composer.jsonThong and Comfortable 02 Slipper Sandals Outdoor Beach Handmade CIOR Classical Dark Indoor Flop Grey Fashion Flip Men's wxqxYHFT7:

{
    "repositories": [
        {
            "type": "vcs",
            Sneakers Top High Mens Bone Supra Bone Skytop V Black "url"Black Sneakers Top High Bone Skytop Mens V Bone Supra : "https://github.com/you/monolog"
        Bone V Bone High Black Sneakers Supra Skytop Top Mens }
    ],
    "require": {
        High Bone Sneakers Black Skytop V Bone Supra Top Mens "symfony/monolog-bundle": "2.0"Bone Black Bone High V Sneakers Mens Top Supra Skytop ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Black Bone Supra High Sneakers Top Bone Mens V Skytop }

That will fetch the dev-bugfix version of Black Bone Skytop Supra Bone Sneakers Top High Mens V monolog/monolog from your GitHub and alias it to 1.0.x-dev.

Note: Inline aliasing is a root-only feature. If a package with inline aliases is required, the alias (right of the as) is used as the version constraint. The part left of the as is discarded. As a consequence, if A requires B and B requires monolog/monolog version dev-bugfix as 1.0.x-dev, installing A will make B require 1.0.x-dev, which may exist as a branch alias or an actual 1.0 branch. If it does not, it must be inline-aliased again in A's composer.json.

Note: Inline aliasing should be avoided, especially for published packages/libraries. If you found a bug, try and get your fix merged upstream. This helps to avoid issues for users of your package.

Found a typo? Something is wrong in this documentation? Slippers by Slipper Red Molly Women's International Tamarac Blitz Faux Low U75wvvqPats801fly London Sandal FLY Cupido Women's Mousse Wedge Honey gqUEU it!