PHP Composer Overview and Features

To manage changes to source code over time, allowing multiple developers to collaborate effectively.

Git is a distributed version control system, allowing each user to have a complete copy of the project history on their local machine.

git init (initializes a new Git repository), git add (stages changes for commit), git commit (saves changes to the repository).

<p>GitHub is a platform for hosting Git repositories, facilitating collaboration and version control for developers.</p> Signup and view all the answers

<p>Composer is a dependency management tool for PHP that streamlines the installation and updating of libraries within projects.</p> Signup and view all the answers

<p>Composer manages dependencies on a per-project basis, allowing each project to maintain its own specific set of dependencies.</p> Signup and view all the answers

<p>'git pull' is used to update the local repository with changes from the remote repository, ensuring synchronization.</p> Signup and view all the answers

<p>'git status' provides information about the current state of the working directory, including staged changes and untracked files.</p> Signup and view all the answers

<p>Composer automatically resolves and installs dependencies, ensuring necessary packages are downloaded and compatible versions selected.</p> Signup and view all the answers

<p>The autoloader allows automatic inclusion of installed packages, eliminating the need for manual 'require' or 'include' statements.</p> Signup and view all the answers

<p>Packagist is the default repository used by Composer for discovering, installing, and updating open-source PHP packages.</p> Signup and view all the answers

<p>Composer uses semantic versioning to allow specification of version constraints such as exact, minimum, or range of versions.</p> Signup and view all the answers

<p>Key CLI commands include 'composer install', 'composer update', and 'composer require'.</p> Signup and view all the answers

<p>'require' is used for production dependencies while 'require-dev' is used for development-only dependencies.</p> Signup and view all the answers

<p>Composer resolves dependencies automatically based on specified project requirements and their compatible versions.</p> Signup and view all the answers

<p>The main advantage is its ability to automate dependency management and package installation, which saves time and reduces errors.</p> Signup and view all the answers

<p>^1.2 allows updates up to (but not including) 2.0.</p> Signup and view all the answers

<p>'composer install' installs all packages listed in composer.json.</p> Signup and view all the answers

<p>The wildcard (<em>) allows broad version matching, e.g., 1.</em> matches any 1.x version.</p> Signup and view all the answers

<p>'composer validate' is used to check composer.json for errors.</p> Signup and view all the answers

<p>'composer outdated' shows packages that have newer versions available.</p> Signup and view all the answers

<p>The Composer.json file defines the dependencies, project metadata, and various configurations for a PHP project managed by Composer.</p> Signup and view all the answers

<p>The Composer.lock file records the exact versions of each dependency installed at the last 'composer install' run.</p> Signup and view all the answers

<p>'Require' lists packages essential for the project to run, while 'require-dev' specifies dependencies needed only for development and testing.</p> Signup and view all the answers

<p>The first number is the major version, indicating backward-incompatible changes; the second is the minor version for new features; and the third is the patch version for bug fixes.</p> Signup and view all the answers

<p>The caret (^) symbol allows updates to dependencies that do not break compatibility.</p> Signup and view all the answers

<p>Managing dependencies with Composer ensures that all necessary libraries are included and properly versioned for a project to function correctly.</p> Signup and view all the answers

<p>Composer allows for easy updates of dependencies, enabling developers to apply security patches and fixes promptly.</p> Signup and view all the answers

<p>The 'require' section lists all the packages and their versions that are needed for the project to run.</p> Signup and view all the answers

Tools used to track changes to software code over time.

A distributed version control system for tracking changes to files.

A popular platform for hosting Git repositories.

PHP dependency management tool.

The process of installing and managing software libraries that a project relies on.

A popular programming language for web development.

Command to create a new Git repository.

A computer where a software developer works and run their software.

A tool that helps manage dependencies for PHP projects. It automatically finds, downloads, and installs necessary packages, ensuring compatibility with your project's requirements.

By resolving and installing dependencies, Composer eliminates the hassle of manually managing libraries and ensures your project has all the necessary packages at compatible versions.

Composer includes an autoloader that automatically loads required packages into your project, without manually writing 'require' or 'include' statements. This saves time and prevents errors.

Composer uses Packagist, a large repository of open-source PHP packages, to discover, install, and update libraries for your project.

Composer uses semantic versioning (e.g., 1.0.0, 2.1.5) to manage package versions, allowing you to specify specific versions or constraints that are compatible with your project.

Composer provides various command-line interface (CLI) commands, such as composer install, composer update, and composer require, to manage dependencies, install new packages, and update existing ones.

These are essential libraries that your project needs to function properly in a live environment.

These are libraries that your project needs during development, such as testing tools, but are not required for the live environment.

A configuration file that specifies project dependencies, metadata, and settings for a PHP project managed by Composer.

A file that records the exact versions of each dependency used in a project, ensuring consistent installations.

It lists the essential packages and their versions required for the project to function.

It specifies packages needed only for development and testing, not for running the actual project.

It signifies significant changes that may break backward compatibility.

It introduces new features that are backward compatible with previous versions.

It fixes bugs, addresses security vulnerabilities, or makes minor improvements without affecting existing functionality.

It allows for updates that don't break compatibility, allowing minor and patch versions to be updated.

Downloads and installs all packages listed in the composer.json file, setting up the project's dependencies. This ensures your project has everything it needs to run.

Updates all installed packages to their latest compatible versions, based on the constraints specified in composer.json. This keeps your project up-to-date with the latest features and security fixes.

Adds a new package to the project's dependencies and updates composer.json. This allows you to add new functionalities or libraries to your project.

Removes a package from the project and updates composer.json. This removes unnecessary dependencies or libraries from your project.

Regenerates the autoload files that help Composer quickly find and load classes in your project. It's useful when you add custom classes.