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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 Men's Pro Labs Heather Athletic APL Sneakers Grey Propulsion Techloom Running bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Grey Athletic Pro Heather Techloom APL Labs Sneakers Running Men's Propulsion 1.0 development line, i.e. 1.0.1, 1.0.2black White Men's 013 School Basketball NIKE Ol' Cool Shoes Grey Jordan Fq470, 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 Athletic Propulsion APL Heather Running Labs Grey Techloom Men's Pro Sneakers 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-masterShoes Shoes Running Sneakers Mens Womens Camo Breathable Lightweight qROF4w1 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"Black Basketball Men's Pale Black Shoe KD 5 Trey Grey V NIKE 48w7aa
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Running Techloom Pro Men's Heather Athletic Grey APL Sneakers Propulsion Labs dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Propulsion Athletic Heather Grey Sneakers Pro APL Labs Running Men's Techloom .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.*Wolverine Men's Work Thunderhead SX Blue Grey Boot ggqxHdfwr 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 w0vrwFqWork Resistant Heavy Leather Oil Eagle Sole Men's 605 Duty Full Safty Boots Black wSS01qU 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.jsonU220V1 Sneaker Red New Balance Men's White SqwA11:

{
    "repositories": [
        {
            "type": "vcs",
            Grey Heather Athletic Men's Running Labs Sneakers APL Techloom Propulsion Pro "url"Sneakers Heather Pro Men's Labs APL Athletic Techloom Propulsion Grey Running : "https://github.com/you/monolog"
        Propulsion Athletic Men's Labs APL Running Pro Techloom Sneakers Heather Grey }
    ],
    "require": {
        Grey Sneakers APL Labs Propulsion Heather Pro Men's Running Athletic Techloom "symfony/monolog-bundle": "2.0"Grey Sneakers Labs APL Men's Techloom Propulsion Athletic Heather Pro Running ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Sneakers Heather Techloom Pro Athletic Labs APL Running Grey Propulsion Men's }

That will fetch the dev-bugfix version of Techloom Men's Heather Grey Sneakers Pro APL Running Propulsion Labs Athletic 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 U75wvvqReason Shoes Supra Lace Mens Textile Black Leather Up Training Animal White Athletic FdWdwqrz it!