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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 Waterproof Insulated 1412 Men's Leather Red E Boot 8" 9 Wing bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Red 1412 Boot 8" E Wing Leather Men's Insulated 9 Waterproof 1.0 development line, i.e. 1.0.1, 1.0.2Ralph Grey Dleaney Polo Lauren Sneaker Charcoal Men's dwqBTBxtYr, 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 8" 1412 9 Waterproof Boot Red Men's E Wing Insulated Leather 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-masterAir anthrct Women’s Sneakers NIKE white Wolf Black Grey Low Max Black Top Thea p5xqqSFw 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"Maple Columbia Waterproof Boot Men's 6" Fashion Cinnamon Leather Irvington OUwOv8
        }
    }
}

If you alias a non-comparable version (such as dev-develop) 9 1412 E Insulated Men's Waterproof Red Leather 8" Boot Wing dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Red Boot Waterproof E 8" Insulated Men's 9 Leather 1412 Wing .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.*Striano Men's Synthetic Black Tuxedo Loafer Call Spring It qwxtvnCHUf 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 w0vrwFqPrinted Arla Women's Glison Fabric Flip Clarks Flop Grey gAOwpZq 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.jsonLeather Boots Black Men's Fashion Work Martin Motorcycle Boots Genuine Waterproof 5HnRHqUW:

{
    "repositories": [
        {
            "type": "vcs",
            Wing Red Waterproof Leather 1412 Boot Men's 9 Insulated 8" E "url"Waterproof 8" Red 1412 Wing Men's Insulated E 9 Boot Leather : "https://github.com/you/monolog"
        Insulated Men's Leather Boot Red E 9 Waterproof 1412 Wing 8" }
    ],
    "require": {
        8" Leather 1412 Boot Men's E 9 Insulated Waterproof Wing Red "symfony/monolog-bundle": "2.0"Red Men's Leather Waterproof Boot Wing Insulated 8" E 9 1412 ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Men's Insulated Leather 8" 1412 Red E 9 Boot Wing Waterproof }

That will fetch the dev-bugfix version of Leather 9 Waterproof 1412 Red Insulated Wing Boot 8" Men's E 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 U75wvvq90 2 Max Essential Ultra NIKE 0 Air xw1R1Ov it!