Composer a new era of PHP dependency management

For modern languages, Package Manager is basically standard. Java has maven,python have Pip,ruby have Gem,nodejs have NPM. PHP is pear, but pear pits a lot:

Dependency processing prone to problems

Very complex configuration

Hard-to-use command-line interface

Fortunately, we have composer,php rely on the management of the weapon. It's open source, it's easy to use, and it's easy to submit your own package.

Installing composer

Composer requires PHP 5.3.2+ to run.

$ CURL-SS Https://getcomposer.org/installer | Php

This command will download the Composer.phar to the current directory. PHAR (PHP compression package) is a compressed format that can be run directly under the command line.

You can use the--install-dir option to install composer to the specified directory, for example:

$ CURL-SS Https://getcomposer.org/installer | PHP----install-dir=bin

Of course, you can also do a global installation:

$ CURL-SS Https://getcomposer.org/installer | php$ MV Composer.phar/usr/local/bin/composer

You can also use the homebrew installation under Mac OS x:

Brew Tap Josegonzalez/homebrew-phpbrew Install Josegonzalez/php/composer

However, it is usually only possible to add the location of the Composer.phar to path, not necessarily the global installation.

Claim dependent

Create a Composer.json file under the project directory that indicates dependencies, for example, your project relies on Monolog:

{"    require": {        "Monolog/monolog": "1.2.*"}}

Installation dependencies

Installation dependencies are simple, just run in the project directory:

Composer Install

If there is no global installation, then run:

PHP Composer.phar Install

Auto Load

Composer provides an auto-load feature that simply includes the following line in the initialization section of your code:

Require ' vendor/autoload.php ';

Module Warehouse

Packagist.org is a warehouse of composer, where many well-known PHP libraries can be found. You can also submit your own work.

Advanced Features

The above describes the basic usage of composer. Composer also has some advanced features that, although not required, can often be handy for PHP development.

Project Home

For more information, please visit Composer's homepage.

Domestic mirror

http://pkg.phpcomposer.com/

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