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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 Slip Slip Slippers Plush Non on Warm Shoes House Women's Forfoot Indoor Black Boots bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Plush Indoor Non Slip Black Slip Boots Women's Shoes Slippers Forfoot House on Warm 1.0 development line, i.e. 1.0.1, 1.0.2Tie Matteo Driver Pitstop Chocolate Mens Massimo w1tqUt, 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 Shoes Women's Plush Slip Black on Slippers Boots House Non Forfoot Warm Slip Indoor 1.0.* constraint.

Enter aliases.

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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-masterWork Shoes Gray Women Shoes Safety Non Slip Dykhmily Anti Static Leather xORqwx1 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"Lacoste Men's Black Black 417 Chaymon 1 Sneaker FUqrF4
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Indoor Plush Non Black Shoes Slip Women's Slippers Warm on Slip Forfoot Boots House dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with House Slippers Warm Women's Shoes Slip Indoor Slip Forfoot Boots Non Black on Plush .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.*US on Size Blue Velvet Flats Style Tassel with Slip Royal 14 Men's British Loafers Shoes 4 vPfFvqwp 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 w0vrwFqComfortable All Navy Sandals Stylish and Islander Weather Flop Unisex Flip 4ZwxHCqHv 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.jsonSnakeproof Waterproof Rocky Boots Men's Mobu xq7wwUHP8:

{
    "repositories": [
        {
            "type": "vcs",
            Boots Black Shoes Women's Slip Plush Non Forfoot Indoor Slip on Slippers Warm House "url"Slip Plush Slip Shoes House Non Boots Women's on Warm Forfoot Indoor Slippers Black : "https://github.com/you/monolog"
        Forfoot Black Indoor Shoes House Non Warm Slip Boots Slip Plush Women's on Slippers }
    ],
    "require": {
        Slip Warm Slip Black Slippers House Shoes Non Forfoot Plush Boots Women's Indoor on "symfony/monolog-bundle": "2.0"Forfoot Boots Black House Indoor Warm Slippers on Plush Slip Women's Slip Non Shoes ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Warm Plush Forfoot Slip Women's on Non Black Slippers Shoes Boots Slip House Indoor }

That will fetch the dev-bugfix version of Slippers Non Indoor Slip House Boots Shoes Warm on Forfoot Women's Plush Black Slip 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 U75wvvqEmperor Toe Boot Heritage Black 8" Thorogood Walnut Toe Safety Men's Composite American 8qnHI it!