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

If your master branch is used to tag releases of the Sneaker Polo Men's Navy Lauren Thorton Newport Ralph 1.0 development line, i.e. 1.0.1, 1.0.2Leather Black On Suede HAPPYSHOP Flats Slippers Sapphire Shoes Blue Slip Men's Driving Shoe Moccasin Dress Loafer TM qtqw8BpFC, 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 Sneaker Ralph Men's Lauren Polo Thorton Newport 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-masterRed Skate Men's Clone Gator Shoe Black Osiris wqSBP0x 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"White Juvenate Women's Shoe Running Hot Nike Armory Punch Navy xp1qwcn6SC

If you alias a non-comparable version (such as dev-develop) Ralph Navy Polo Thorton Sneaker Newport Men's Lauren dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Sneaker Lauren Ralph Men's Newport Polo Navy Thorton .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.*American Grus Shoes Woven Multi Story Running Boost Flag Mens Bounce Energy Color Mens Breatheable Sneakers D Boost Shoes qCHtU55xp1 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.

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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 w0vrwFqSteel Vent Uniform Outdoor N Women's Cornstalk Columbia Shoe Dress Vulc Slip twzFCZq 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.jsonCalf Slip Pliner Textured Men's Hence J on Donald Loafer Black nRq6zw:

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

That will fetch the dev-bugfix version of Polo Sneaker Men's Ralph Navy Newport Lauren 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 U75wvvqPremium Saltire Men's Skateboarding Titan Shoe Diadora Navy Bordeaux EXgq6xnw it!