...The Firebase Admin PHP SDK enables access to Firebase services from privileged environments (such as servers or cloud) in PHP. If you are interested in using the PHP Admin SDK as a client for end-user access (for example, in a web application), as opposed to admin access from a privileged environment (like a server), you should instead follow the instructions for setting up the client JavaScript SDK. The recommended way to install the Firebase Admin SDK is with Composer. Composer is a dependency management tool for PHP that allows you to declare the dependencies your project needs and installs them into your project. ...