如何从项目中删除作曲家？

删除 composer.json、composer.lock 和 vendor/ 目录；2. 移除代码中对 vendor/autoload.php 的引用；3. 清理 composer.json 中的 scripts 配置；4. 从版本控制中移除 Composer 相关文件；5. 手动管理原由 Composer 安装的依赖库；仅在小型项目或迁移场景下建议移除 Composer，否则将增加依赖维护难度，操作后需确保应用仍可正常运行。

If you're asking how to remove Composer from a project, what you likely mean is: remove Composer as a dependency manager from your project, or clean up Composer-related files because you no longer want to use it. Here's how to do that properly.

✅ 1. Delete Composer Files

Remove the key files that Composer uses in your project:

• composer.json
• composer.lock
• vendor/ directory

You can do this via command line (Linux/macOS/WSL):

rm composer.json composer.lock
rm -rf vendor/

On Windows (Command Prompt):

del composer.json composer.lock
rmdir /s /q vendor

Or just delete them manually in your file explorer/IDE.

⚠️ The vendor/ folder can be large — double-check you don’t need it!

✅ 2. Update Autoloader References

Composer generates an autoloader at vendor/autoload.php. If your code includes this:

require_once 'vendor/autoload.php';

You must remove or replace this line, or your app will throw fatal errors.

• If you're switching to another autoloader (like PSR-4 with your own), update accordingly.
• If you're not using external packages, just delete the line.
• If you're using classes installed via Composer, you’ll need to manually include them or find alternatives.

✅ 3. Remove Composer Scripts (if any)

Check your composer.json for "scripts" like:

"scripts": {
    "post-install-cmd": "php something.php"
}

These are no longer relevant once Composer is removed. If you had external tools relying on these (e.g., Laravel's artisan optimize, Symfony scripts), you’ll need to handle them manually or remove the dependency.

✅ 4. Remove Composer from Version Control (Optional)

If using Git, remove Composer files from tracking:

git rm --cached composer.json composer.lock
git rm -r --cached vendor

Then commit:

git add .
git commit -m "Remove Composer dependencies"

Also consider removing any Composer-related entries in .gitignore.

✅ 5. Handle Dependencies Manually (Important!)

Composer installs third-party packages (e.g., Guzzle, Monolog, Symfony components). After removing Composer:

• You can’t easily update these packages.
• You must manually manage any libraries you still need.
• Consider downloading .phar files, using CDNs (for non-PHP), or including source files directly (not recommended for large projects).

? Warning: Removing Composer makes dependency management harder. Only do this for small, self-contained projects or legacy migration.

When Should You Actually Remove Composer?

• Migrating to a framework that doesn’t use it.
• Converting to a static site or simple PHP script with no external deps.
• Starting fresh with a different tool (e.g., Docker with bundled deps).
• Cleaning up a test project.

In most modern PHP projects, keeping Composer is recommended — it’s standard and well-supported.

Basically, removing Composer comes down to deleting its files and cleaning up references. Just be sure your app doesn’t break from missing dependencies.

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