PHP Composer, Quick guide, First Steps
Just as Node.JS has NPM or Ruby has Bundler, in PHP we have PHP Composer. It is a package manager that makes it easier for us to manage the depedencies of the libraries we work with our PHP Projects.
Installing PHP Composer
If you are a windows user, just download the installer always from their official site: https://getcomposer.org/Composer-Setup.exe
I personally work with Debian Linux, but the steps i am going to show you work similarly in Ubuntu and other Debian child distributions.
We download the PHP Composer
curl -sS https://getcomposer.org/installer -o composer-setup.php
We execute your installation
sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer
Executing the above will throw us the following over the command line.
We will remove the file composer-setup.php
Finally we are going to execute the command “composer”
The last command will help us to corroborate our setup was satisfactory and will show us the following message in the terminal.
Once this is done we have PHP Composer ready to use.
Basic commands to works with PHP composer
We execute it at the root of the directory in which our PHP project is located and when we run it, it will ask us for some basic information about or project “Package name, description, dependencies”. The dependencies can be added at any time by editing the file “composer.json” which is generated automatically with this command.
This command execute the setup of the depedencies added in the composer.json file.
With this command we will setup the require dependencies and we will add automatically to the composer.json file.
With the “composer update” command will download the last depedencie version.
Installing a depedency on an existing project
We will try now to install a dependencie on a project which we have currently active but for this case we will use the dependencie Simple Cache Class
We will get in the project directory and execute
This command will build our composer.json file and will ask for the following info:
Package name (<vendor>/<name>): danielrosiles/simple_cache_php Description : Author [, n to skip]: Daniel Rosiles <hello at danielrosiles.com> Minimum Stability : stable Package Type (e.g. library, project, metapackage, composer-plugin) : library License : MIT
We will setup the dependecie
composer require voku/simple-cache
By executing the above commands we can already invoke the dependency in our project. And now we only need to invoke in our php code the autoload generated by the PHP composer.
use voku\cache\Cache; require_once 'composer-path/autoload.php';
Da click aquí para encontrar la versión en español de está entrada.
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