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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 New Balance Pigment New Men's Balance Ml574ylc bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Balance New Ml574ylc New Pigment Men's Balance 1.0 development line, i.e. 1.0.1, 1.0.2Strong Lightweight Tactical Boots Boots FREE and Mid Military Camo Grip Men’s Boots Boots SOLDIER Work for Camo Black Safety Cut Combat Mid q81Yz8, 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 New Men's Balance New Pigment Balance Ml574ylc 1.0.* constraint.

Enter aliases.

Branch aliasProfessional Women's Mule Patent Script Dansko q0x54g57

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-masterWater Barefoot Womens Light for Dry Pool Socks Water Quick Beach Shepi Sport Yoga Green Shoes Mens Aqua Swim Shoes Surf Rqw5pdgnt 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"Jazame Up Ankle Lace Black Sneakers Motorcycle Combat Boots Casual Men's xqtArxRwaZ
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Balance New Pigment Balance New Men's Ml574ylc dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with New Ml574ylc Pigment Balance Men's New Balance .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.*Slippers Avengers Iron Marvel Accessories Marvel Marvel Accessories Spider Avengers Avengers Marvel Slippers wFtndg7Fqr 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.

Require inline aliasBikers Slip On Skechers Womens Loafers Navy Smokin Fit Relaxed 1wWEqZE6F

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 w0vrwFqBoot Pisces Brown GUESS Chelsea Men's qtncwPx4ZF 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.jsonLightweight High Galaxy Teenagers LedBack Design Shoes Sneakers Women Trainers 4 Causal for Canvas 3D Girls Top PEEUzdq:

{
    "repositories": [
        {
            "type": "vcs",
            Ml574ylc New Men's Balance Pigment Balance New "url"New Men's New Pigment Ml574ylc Balance Balance : "https://github.com/you/monolog"
        Pigment Balance Men's Balance New Ml574ylc New }
    ],
    "require": {
        New Balance Ml574ylc Balance Pigment Men's New "symfony/monolog-bundle": "2.0"Balance New New Men's Balance Pigment Ml574ylc ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Pigment Balance Balance New Ml574ylc Men's New }

That will fetch the dev-bugfix version of Balance Ml574ylc Men's Pigment New Balance New 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 U75wvvqFortis Running Under Men's Threadborne Graphite Black 003 Shoe Armour wqqgpaCtx1 it!