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@ -50,7 +50,7 @@ defined in your dependencies will not be loaded. Read the
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want to learn why.
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When resolving dependencies, packages are looked up from repositories from
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top to bottom, and by default as soon as a package is found in one Composer
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top to bottom, and by default, as soon as a package is found in one, Composer
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stops looking in other repositories. Read the
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[repository priorities](articles/repository-priorities.md) article for more
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details and to see how to change this behavior.
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@ -6,7 +6,7 @@
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## Canonical repositories
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When Composer resolves dependencies it will look up a given package in the
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When Composer resolves dependencies, it will look up a given package in the
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topmost repository. If that repository does not contain the package, it
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goes on to the next one, until one repository contains it and the process ends.
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@ -15,12 +15,13 @@ Canonical repositories are better for a few reasons:
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- Performance wise, it is more efficient to stop looking for a package once it
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has been found somewhere. It also avoids loading duplicate packages in case
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the same package is present in several of your repositories.
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- Security wise, it is safer to treat them canonically as it means that your most
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important repositories will return the packages you expect them to always. Let's
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- Security wise, it is safer to treat them canonically as it means that packages you
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expect to come from your most important repositories will never be loaded from
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another repository instad. Let's
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say you have a private repository which is not canonical, and you require your
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private package `foo/bar ^2.0` for example. Now if someone publishes
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`foo/bar 2.999` to packagist.org, suddenly Composer will pick that package as it
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has a higher version than your latest release (say 2.4.3), and you end up install
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has a higher version than your latest release (say 2.4.3), and you end up installing
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something you may not have meant to. If the private repository is canonical
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however, that 2.999 version from packagist.org will not be considered at all.
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@ -58,9 +59,9 @@ contains a given package.
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## Filtering packages
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You can also filter packages which a repository will be able to load, either by
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selecting which you want, or by excluding those you do not want.
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selecting which ones you want, or by excluding those you do not want.
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For example here we want to pick only the `foo/bar` and all the packages from
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For example here we want to pick only the package `foo/bar` and all the packages from
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`some-vendor/` from this composer repository.
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```json
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@ -90,5 +91,5 @@ we may not want to load in this project.
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}
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```
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Both `only` and `exclude` should be array of package names, which can also
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Both `only` and `exclude` should be arrays of package names, which can also
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contain wildcards (`*`) which will match any characters.
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Reference in New Issue