![]() Locally is nice because it can then be included in our source code management (SCM) and be at the same level for all developers and servers. The other option is that we can install it globally into our system’s path. ![]() The first is that we can install the PHAR file into our current project. There are two options for how we can install Composer. We just need one of the supported versions of PHP, and we can easily add it to most systems.Įxact installing instructions are available on. InstallingĬomposer itself comes as a self-contained PHAR file so it’s very portable. When we need to update a package, a simple command will upgrade all the dependencies.Ĭomposer also provides a built-in autoloader, so we don’t need to `require_once()` all of the classes we need for each request. Once we’ve installed our dependencies locally, Composer will lock those dependencies into a specific version so we can install the same versions on any number of computers easily. It manages these dependencies on a per-project basis, so we severely reduce the chance we’re going to have a dependency hell situation on our hands. It allows us to declare the dependencies that our project requires and it will automatically determine all the dependencies of our dependencies. In this article, we’ll discuss what Composer is, some of its features, and how to integrate it with your project today.Ĭomposer is a tool for dependency management in PHP. Thankfully, as a community, we no longer have to worry about dependency hell because we can use Composer to solve all of these problems for us. This was such a common occurrence it was called dependency hell. And lord help you if you had your application installed on a server with other applications because each might need a different version of the same package. Because we didn’t control this, we would occasionally have to debug problems because someone installed a different version of the library than what the application was developed against. The other option was to rely on shared dependencies installed on the server using something like Pear. This worked but could cause our application to balloon in size. The first is that we could put all the dependencies in a directory of our application and use them from there. In the darker days of web application development, we essentially had two options for working with dependencies.
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