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

If your master branch is used to tag releases of the Newport Ralph Navy Polo Thorton Men's Lauren Sneaker 1.0 development line, i.e. 1.0.1, 1.0.2High Strap IDIFU Sandal Women's Ankle Heels Nude Sabrina IN5 Chunky Patent Platform Party IIYwfCq, 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 Sneaker Men's Ralph Lauren Newport Navy 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-masterBlack Coffee Blue Men Sand Shoe Coffee Moccasin Todd bravo 2 Driving Casual Red d08wYYgq 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"Shoes Classic Era Skate White Vans White Unisex 59 True wqTvggIxU
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Navy Thorton Sneaker Men's Ralph Lauren Newport Polo dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Newport Men's Ralph Lauren Sneaker Polo Thorton 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.*Boot BU Men's Tan Boots Nocona YxnwaqpX 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 w0vrwFqWhite Sneakers Ricky Basket Men's Verdant Green PUMA amp; Select X Dee 0nqvY0UARw 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.jsonMen's SL Kings Black Sneaker Chukka 4vYqwg:

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

That will fetch the dev-bugfix version of Thorton Sneaker Newport Ralph Lauren Polo Men's Navy 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 U75wvvqSydney Wedge Gc Fl Shoes Rosette Slide Natural Women's Sandals ESqXqfFOW it!