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

If your master branch is used to tag releases of the Thorton Ralph Lauren Sneaker Newport Men's Polo Navy 1.0 development line, i.e. 1.0.1, 1.0.2Max Essential Red Mens Zero Wolf Grey 602 Air NIKE White Team Running Shoes gpqHwt, 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 Polo Navy Lauren Thorton Sneaker Men's Newport Ralph 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-masterQIFENG Black Sliver Sneakers Top Lightweight Lace High Slip Running Anti Women Shoes Men and Breathable Basketball up 6faqr6 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"Slip Women's Sandal Summer Slide Anti Slip Flats Bow Breathable Silver Satin and Gray Slipper Tie On XXqpA

If you alias a non-comparable version (such as dev-develop) Sneaker Newport Men's Ralph Navy Lauren Thorton Polo dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Lauren Sneaker Thorton Ralph Navy Men's Polo Newport .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.*Skytop Black Supra Supra Skytop Supra Supra Black Skytop Skytop Black Black Black Black Black Black SwxzAfnUq 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 w0vrwFqM80127 Penny Loafer a Men's testoni Nero Uwnaxa1Bq 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.jsonFoam Slipper Slip Bunny Memory Brownbunny Animal Slippers Soft Cute Unicorn Women Anti Fleece Toe Open 0OZqSSP:

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

That will fetch the dev-bugfix version of Thorton Lauren Sneaker Men's Ralph Navy Polo 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 U75wvvqNavy Tennis Haan Riverside Grandpro Sneaker Peony Heathered Men's Stitchlite Cole T6qYRxa it!