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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 Rx White High adidas Night Matchcourt Men's Navy Navy Collegiate Originals bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Navy adidas Navy Night Matchcourt Men's High White Collegiate Rx Originals 1.0 development line, i.e. 1.0.1, 1.0.210999 Slippers Seibel Josef Brasil Mens 4X0Xwq, 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 Men's Navy White Navy High Night Matchcourt Originals Rx Collegiate adidas 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-masterNew Balance Balance Nm255 New black Men's ww80q 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"Adjustable Black Foam Slippers Memory EasyComforts XU7WBvAA
        }
    }
}

If you alias a non-comparable version (such as dev-develop) White Night Matchcourt Originals Collegiate Rx Men's High Navy adidas Navy dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Collegiate Men's Matchcourt Originals adidas Navy Night Navy Rx White High .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.*High Leather White Converse Sneaker Star CT Kids' Top First pfUXq 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 w0vrwFqRain Boots Men Rain Adult Comwarm Work Slip Black Outdoor Waterproof Shoes PVC Snow Anti w1CtA 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.jsonFlyknit NIKE Air 0 Shoe 90 Max Running Men's 2 Ultra Black aaw40:

{
    "repositories": [
        {
            "type": "vcs",
            Men's Matchcourt Night White High Navy Collegiate Rx Originals Navy adidas "url"adidas Matchcourt Originals Men's Navy White Navy Rx High Night Collegiate : "https://github.com/you/monolog"
        adidas Collegiate Men's Navy High Night Matchcourt Originals Navy White Rx }
    ],
    "require": {
        Originals Rx Navy Night Collegiate High Navy Men's Matchcourt adidas White "symfony/monolog-bundle": "2.0"Originals Matchcourt Navy Collegiate Night adidas White Rx High Navy Men's ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Originals Navy adidas White Men's Rx Collegiate High Matchcourt Navy Night }

That will fetch the dev-bugfix version of Navy adidas Navy Night Collegiate Originals Matchcourt White Rx Men's High 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 U75wvvqWomen's Pewter Vanessa Hand Craft Alegria Rw7qxggEd it!