composer使用

;初始化composer init;生成一个composer.json的文件{    "name": "xly/test",    "description": "test composer",    "type": "library",    "authors": [        {            "name": "xuleyan",            "email": "[e-mail]"        }    ],    "require": {}};search包composer search monolog;在composer.json中加入monolog/monolog"require": {        "monolog/monolog" : "1.23.*"};执行安装composer install;安装其他模块(不需要在composer.json中添加)composer require symfony/http-foundation;更新（也可删除）composer update;安装laravel;第一种方式composer create-project --prefer-dist laravel/laravel blog;第二种方式composer global require "laravel/installer";建立全局的软连接ln -s ./composer/vendor/bin/laravel /usr/local/bin/laravel;创建一个Laravel工程laravel new blog