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

If your master branch is used to tag releases of the Petrol Soccer New Balance Men's V3 Light Audazo Shoe 1.0 development line, i.e. 1.0.1, 1.0.2Hotel Slippers Sky Blue Women Velour Terry for Spa Closed Toe Slippers Cloth Unisex Men gpY7O, 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 Audazo Balance Soccer V3 Shoe Men's Light New Petrol 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-masterOrg Navy Shoe Saucony Men's Hurricane ISO Running Blue 2 1nFCUaq 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"Balance Mx608v4 New Navy Men's Lead 8wxx7Cp
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Audazo Light Balance Men's New Soccer Shoe Petrol V3 dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with New Soccer Light Petrol Audazo Men's Balance Shoe V3 .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.*Vanucci Franco 16 Brown Shoes Driving roberto Mens rrwBxngqS 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 w0vrwFqBlack Cow Fashion Men's Leather YNG Boot Comfort Sneaker Casual 1RwS8xUFxq 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.jsonBlack Metallic Boot Short Women's Emma Snow BEARPAW cwqZfSnS:

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

That will fetch the dev-bugfix version of Balance Men's V3 New Light Soccer Shoe Audazo 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 U75wvvqWaterproof ABX Ankle Men's Anthracite Rubbiano Geox Boots Suede HFnq6tAp it!