Igor's Blog

Until recently all of my PHP development relied on manually downloading library dependencies and making them work with existing projects. Now that I started work on a new project from scratch I decided to try out Composer for library management and wow does it save a lot of time and hassle!

Installation is very easy, just use curl to download it and pipe to the php executable. I prefer to keep Composer inside my project directory but it is also possible to install globally.
 Installing Composer
curl -s http://getcomposer.org/installer | php


That will create a file called composer.phar, which is the entire Composer executable script. At this point you have a couple of options. You can create a composer.json file manually or use './composer.phar init' to generate the file for you by answering a number of questions. You can then use then './composer.phar require ' to add a library to your project.

In my case the composer.json file looks something like this...
 composer.json
{
"name": "ikromin/travelblog.ws",
"authors": [
{
"name": "Igor Kromin",
"email": "email@example.com"
}
],
"require": {
"jackalope/jackalope-doctrine-dbal": "^1.2",
"smarty/smarty": "^3.1"
}
}




What that means is the name of my project is 'ikromin/travelblog.ws' and I am the author. In addition the project requires the jackalope/doctrine-dbal and the smarty libraries (specifying the version numbers).

Running './composer.phar install' will download and install all of the required libraries, including their dependencies, into your project.

Once that is done, it's just a matter of including the auto-loader like this...
 Autoloader
<?php
require __DIR__ . '/vendor/autoload.php';
...


...and you can begin to use the libraries. It's as simple as that!

-i

, ,
About — I'm an enthusiastic software engineer and consultant interested in many fields including J2EE, programming, electronics, 3D printing, video games, wood working and gardening.
See my Resume for more information.
The views expressed in this blog are my own and not those of my employer.
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