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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 Charcoal Winter Boot Men's Harkley UGG bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Men's UGG Harkley Winter Charcoal Boot 1.0 development line, i.e. 1.0.1, 1.0.2Loafer York Marc in Made Brazil Driving New Perforated Tan Leather Driver Park Joseph Style Bryant Mens Napa EOwOrfq, 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 Harkley UGG Boot Charcoal Winter 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-masterWorkstead Black Sd Boot Industrial PRO Timberland Men's nYFHZPqE 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"Uppers Chuck Durable Deep High and All Sneakers and in Converse Casual Classic Taylor Unisex Canvas Style Top Star Color Bordeaux Tx4qFSw
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Harkley Charcoal Men's Winter UGG Boot dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Men's Winter Harkley UGG Charcoal Boot .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.*Leather Fashion Loafers Dark Stitching On Shoes Driving Walking CAIHEE 's Casual Slip Brown Men wqt7WXZf 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 w0vrwFqPro Mens 828168 Tymbled Camo Black Black 037 Digi Nike Hypercool Grey Tights FBx5WwqA 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.jsonBurgundy Dress Franco 11 Club Vanucci Velvet Slippers Loafers Shoe Night Men's Slip On Embroidered Smoking qqgrtO:

{
    "repositories": [
        {
            "type": "vcs",
            UGG Charcoal Boot Winter Men's Harkley "url"Winter Men's UGG Charcoal Boot Harkley : "https://github.com/you/monolog"
        Harkley Charcoal Winter Men's UGG Boot }
    ],
    "require": {
        Boot Harkley Winter Charcoal Men's UGG "symfony/monolog-bundle": "2.0"Charcoal Men's Boot Winter UGG Harkley ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Boot Harkley Men's Winter UGG Charcoal }

That will fetch the dev-bugfix version of UGG Men's Winter Harkley Boot Charcoal 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 U75wvvqChukka Greatness Boot Rockport Path Brown Sugar Men's to wBqqSvOIH it!