使用composer remove命令卸載PHP項目中的包，該命令會從composer.json的require或require-dev中移除指定包，並自動調(diào)整依賴關(guān)係。 1. 執(zhí)行composer remove vendor/package從require移除；2. 使用--dev參數(shù)可從require-dev移除；3. Composer會自動更新依賴並重建自動加載器；4. 可運行composer install及檢查vendor/目錄確保徹底清理；5. 最後提交版本控制更改以保存修改。

If you're working with PHP projects, chances are you've used Composer to manage dependencies. At some point, you might find yourself needing to remove a package. The good news is, Composer makes this pretty straightforward — if you know the right command.

Use composer remove to uninstall a package

The main and most direct way to uninstall a package is by using the composer remove command followed by the package name. For example:

 composer remove vendor/package

This command does two things: it removes the package from your composer.json file and updates your dependencies accordingly. Composer will also automatically adjust any other packages that depend on it, provided they can still work without it.

• If the package was listed under require , it gets removed from there.
• If it was in require-dev , it gets taken out from there instead.
• Composer then regenerates the autoloader so your project doesn't try to load classes from the removed package.

You don't need to manually edit composer.json unless you want to double-check what's being removed or if something went wrong.

Remove from specific sections ( require or require-dev )

Sometimes you might want to be more precise about where the package is installed. For example, if a package exists in both require and require-dev , or if you're not sure which section it's in, you can specify:

 composer remove --dev vendor/package # Removes from require-dev

Or just run:

 composer remove vendor/package # Removes from require by default

Composer tries to be smart here — if the package is only in one place, it removes it from there. But being explicit helps avoid confusion, especially in larger projects with multiple developers.

Clean up leftover files and dependencies

After removing a package, Composer runs an automatic cleanup of dependencies. However, sometimes orphaned files or outdated autoload entries might remain. To make sure everything's truly gone:

• Run composer install after removal to refresh the installed packages.
• Check the vendor/ directory manually if you suspect leftover files.
• You can also use tools like composer-unused (a third-party tool) to detect unused packages automatically.

Composer itself doesn't have a built-in "cleanup" command beyond what remove already does, so these extra steps help keep your project tidy.

Don't forget version control

If you're using Git or another version control system, remember to commit the changes to composer.json and composer.lock after removing a package. Also, check whether the package had any config files or service providers registered elsewhere in your app — those won't get removed automatically.

That's all it takes.基本上就這些.

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