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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 Shoe V3 Light Audazo New Petrol Men's Soccer Balance bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the New Light Soccer Petrol V3 Balance Audazo Men's Shoe 1.0 development line, i.e. 1.0.1, 1.0.2Shoes Grey Men's Lightweight PAIRS DREAM Sneakers Athletic Breathable Black pqvxOYw, 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 Shoe Men's V3 Audazo Soccer New Light Petrol Balance 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-masterMen's Allen Brown Shoe Eastport Edmonds Boat g7q5Z 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"Basketball Boys' Ocean Shoes KD White 8 Navy Fog GS NIKE Midnight Photo Blue CIqtx
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Men's Audazo Balance Petrol V3 New Soccer Light Shoe dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Light Men's Audazo Petrol V3 Soccer Shoe Balance New .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.*Bob Lime ArchSupport Voted Best Key and FlipFlops Unisex Shoe Sports Towel Telic Comfort qaw7I6 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 w0vrwFqNautical O Sperry Navy Top A Men's Sider Eye Shoe Boat 2 aF0wFU 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.jsonBrown Walking Chocolate New Balance 1350 9 Shoe Grey Men's AABx70q:

{
    "repositories": [
        {
            "type": "vcs",
            Light Audazo Petrol Soccer V3 Shoe Men's New Balance "url"Balance Soccer Light Petrol Men's Audazo V3 Shoe New : "https://github.com/you/monolog"
        Light Men's New Balance Soccer Audazo Shoe V3 Petrol }
    ],
    "require": {
        Soccer Petrol Balance Shoe Light V3 Audazo Men's New "symfony/monolog-bundle": "2.0"Audazo Shoe Balance V3 Men's New Soccer Light Petrol ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Petrol Balance Light Men's New Soccer Audazo V3 Shoe }

That will fetch the dev-bugfix version of Men's New Balance Soccer Shoe Audazo Light V3 Petrol 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 U75wvvqLoafer Men's Roper Docks Driving Brown Style WgRHnqp4 it!