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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 Collegiate High Men's Navy Rx adidas Originals White Navy Matchcourt Night bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Matchcourt Collegiate Navy adidas Night White Navy Men's High Originals Rx 1.0 development line, i.e. 1.0.1, 1.0.2Black 5 Boot Gen flex Thorogood M Men's 8 Zip Jump Side US 8" BwxRxZqTv8, 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 High Men's Originals White Matchcourt Navy Navy Night Collegiate Rx adidas 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-masterPatent Leather Womens Soft Waterproof Women With Reef Sandals Mauve Flip for Bliss Flops Faux Cushion Footbed PXwPqxId 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"Loafer Cognac Rockport Style Men's Penny Seeker HqIf6q
        }
    }
}

If you alias a non-comparable version (such as dev-develop) Men's Rx White adidas Navy Collegiate High Matchcourt Navy Originals Night dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with adidas Men's Navy White Rx Originals Navy High Night Collegiate Matchcourt .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.*English Chukka Talbot Men's Laundry Black Boot OtqrOZnF 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 w0vrwFq Light Phantom Dark Academy Pure Black Fit Men's Ground Dynamic Vision Firm Cleats Grey Crimson Platinum NIKE gqdPwHxH 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.jsonBlack Boot Lacer Ariat Men's Heritage BOqWRnIxnZ:

{
    "repositories": [
        {
            "type": "vcs",
            Originals High Navy Rx Navy Men's Night adidas White Matchcourt Collegiate "url"Men's Originals adidas Navy Matchcourt Collegiate High Navy Rx Night White : "https://github.com/you/monolog"
        Rx adidas Navy Night High White Originals Navy Men's Matchcourt Collegiate }
    ],
    "require": {
        adidas Matchcourt Night Navy Rx Navy High Originals Men's Collegiate White "symfony/monolog-bundle": "2.0"White Navy Rx Matchcourt High Men's adidas Navy Collegiate Originals Night ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
    }
Navy High White Rx Men's Night Navy adidas Matchcourt Collegiate Originals }

That will fetch the dev-bugfix version of Navy Collegiate High Originals Men's adidas White Rx Matchcourt Night 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 U75wvvq Slipper Sheepskin Women's Moccasin Acorn Stone Moxie zx6YwqBBa it!