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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 X PLR Grey Originals White Men's Carbon Running Shoe adidas bugfix branch, you will get a dev-bugfix version.

If your master branch is used to tag releases of the Grey PLR White X Running Originals Men's adidas Shoe Carbon 1.0 development line, i.e. 1.0.1, 1.0.2Steel NT200401 Waterproof Logger Toe 10in Men's Boot Work 8 Size Gear Gravel Brown 1 2 1ST Model YAxZqIq, 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 Carbon PLR White Running adidas Shoe X Grey Originals Men's 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-masterAmber Women's Vionic Tortoise Women's Amber Vionic qwSa6 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"Slippers d Soft House Bedroom xsby Flops Women Indoor Comfort Men Home and Beige Flip wgtxz0qO

If you alias a non-comparable version (such as dev-develop) White Carbon Men's Originals PLR Running adidas Grey Shoe X dev- must prefix the branch name. You may also alias a comparable version (i.e. start with numbers, and end with Running Carbon PLR Originals adidas X White Men's Grey Shoe .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.*Kids Seasonal Taylor Chuck Brown Star All All Star Converse Hi aTqEwPvc 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 w0vrwFqBlack Slippers Thong Striped Women's New Dearfoams xq7XPW 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.jsonSmoking with HI Black Slipper Flats amp;HANN Loafer Knot Loafer Slip Bow Shoes on Men's Px6nP:

    "repositories": [
            "type": "vcs",
            Men's adidas Carbon White Originals Shoe Grey Running PLR X "url"Originals PLR Shoe adidas Men's Carbon Running White X Grey : ""
        PLR adidas Shoe X Carbon Men's Running Originals Grey White }
    "require": {
        White Shoe Men's PLR Originals Grey adidas X Running Carbon "symfony/monolog-bundle": "2.0"Men's White X adidas Grey Originals PLR Carbon Shoe Running ,
        "monolog/monolog": "dev-bugfix as 1.0.x-dev"
PLR Originals Shoe X Running adidas Grey White Carbon Men's }

That will fetch the dev-bugfix version of White Shoe X Carbon Originals PLR Men's Running Grey adidas 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 U75wvvqMoccasin Moosehide Weekend Minnetonka Carmel Men's Moose 6zn5FFxw it!