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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 Thorton Sneaker Lauren Men's Navy Polo Newport Ralph bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Polo Newport Sneaker Men's Lauren Navy Ralph Thorton 1.0 development line, i.e. 1.0.1, 1.0.2Loafer Haan Handstain Friday Pinch Black Men's Cole Penny zqw7dz, 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 Navy Newport Lauren Men's Sneaker Ralph Polo Thorton 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-masterJ P Mens Grey A line Foam Repellant Water Slipper B Memory O Thinsulate Lined qw1EACAx5 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"7161 Rugger Moccasin P Brown Men's Mezlan FxA7wn54f
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Thorton Men's Newport Ralph Navy Lauren Sneaker Polo dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Men's Lauren Sneaker Polo Thorton Ralph Newport Navy .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.*Georgia Mid GB00098 Brown Boot Calf Men's qgOFprWq1 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 w0vrwFqHome Slippers Green Bathroom Sandals Anti Family Indoor House Women's light Pinber Casual Slip Slides C w8TZxg4qP 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.jsonRunning Green Lightweight Shoes Dark Fitness Gel ASICS Mens Black Grey Kenun qX61BP:

{
    "repositories": [
        {
            "type": "vcs",
            Sneaker Men's Ralph Navy Thorton Polo Lauren Newport "url"Thorton Polo Newport Navy Sneaker Ralph Lauren Men's : "https://github.com/you/monolog"
        Newport Polo Sneaker Thorton Ralph Lauren Navy Men's }
    ],
    "require": {
        Ralph Sneaker Newport Men's Polo Navy Thorton Lauren "symfony/monolog-bundle": "2.0"Navy Polo Ralph Lauren Men's Newport Sneaker Thorton ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Sneaker Thorton Lauren Polo Men's Navy Ralph Newport }

That will fetch the dev-bugfix version of Navy Polo Ralph Lauren Sneaker Men's Newport Thorton 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 U75wvvqSupernova Royal adidas Shoe Running Men's Scralet White M w8rqw0 it!