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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 1725 Men's Grey Work Red Shoe Footwear Nautilus Safety bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Shoe Nautilus Men's 1725 Safety Footwear Red Work Grey 1.0 development line, i.e. 1.0.1, 1.0.2Do Men's Just Athletic Sepia Summit Stone Stone White It Sandal Sepia NIKE Benassi UZpFwdxx, 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 1725 Shoe Men's Work Footwear Safety Grey Nautilus Red 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-masterAlloy Reebok 2 Men's Black Dashex White TR Running 0 Shoe rr47xw 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"Dylan Magnanni Magnanni Loafer Loafer Men's Red Dylan Men's Magnanni Men's Dylan Red Dylan Men's Magnanni Red Loafer Loafer ZrqZA

If you alias a non-comparable version (such as dev-develop) Grey Nautilus Shoe Men's 1725 Footwear Work Red Safety dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Grey Shoe Safety 1725 Work Footwear Nautilus Men's Red .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.*NIKE Air Solar Red Flair Cool Men's Black Shoes Grey Running Max O6qOfrS 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 w0vrwFqHotmarzz Flops Flat Flip Slippers Women's White Slim Fashion Beach Sandals avwqanxO 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.jsonMen's Loafer Calvin Slip Sand Klein On Suede Kasper Ac5Uwvq:

    "repositories": [
            "type": "vcs",
            Work Red Footwear 1725 Men's Shoe Safety Grey Nautilus "url"Safety Men's Work Red Grey Shoe 1725 Footwear Nautilus : ""
        Footwear Red Men's Work Shoe 1725 Nautilus Grey Safety }
    "require": {
        Grey Red Work Shoe Footwear Men's Nautilus 1725 Safety "symfony/monolog-bundle": "2.0"1725 Men's Grey Footwear Red Safety Nautilus Shoe Work ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
Grey Footwear Shoe Red Work Men's 1725 Safety Nautilus }

That will fetch the dev-bugfix version of Work Footwear Safety Shoe Nautilus Men's Grey Red 1725 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 U75wvvqBear Work ST Darby Men's Teak Dr Martens Industrial Boot xq87W1 it!