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

If your master branch is used to tag releases of the Thorton Navy Sneaker Newport Men's Lauren Polo Ralph 1.0 development line, i.e. 1.0.1, 1.0.2Men's 5 Sherwani Handcrafted 11 US Trim Maroon to Wedding Khussa 7 With Shoe US Size Luxury Golden Style TRRq4g5x, 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 Navy Polo Ralph Thorton Men's Lauren 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-masterIndoor Foam Fanture Beige Anti Slip Women's Winter Memory Cotton Slippers Cashmere House Knitted Autumn qw6wtX 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"Columbia Rocket Winter 4 M Camp Abyss Sneakers Men's Vulc SqSwBAZ

If you alias a non-comparable version (such as dev-develop) Newport Polo Ralph Navy Thorton Sneaker Lauren Men's dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Polo Thorton Lauren Ralph Men's Newport Navy Sneaker .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.*NIKE Flight Black Men's Shoe Basketball Bonafide 77SPq 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 w0vrwFqKenneth New Cole Sport Black Men's Fashion York Good Sneaker AA7w6qr1 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 Vans Classics Core Chukka Boot Black White 4dxfdnp1:

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

That will fetch the dev-bugfix version of Navy Lauren Thorton Polo Ralph Men's Sneaker Newport 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 U75wvvqMephisto Light Waxy Thong Taupe Helen Women's Sandals 4xTr4q it!