使用Composer安装Laravel

安装Laravel

以windows为例，首先在cmd中执行查询库：

composer search laravel

会发现出现一大堆：

laravel/laravel The Laravel Framework.
laravel/framework The Laravel Framework.
spatie/laravel-permission Permission handling for Laravel 6.0 and up
fruitcake/laravel-cors Adds CORS (Cross-Origin Resource Sharing) headers support in your Laravel application
barryvdh/laravel-ide-helper Laravel IDE Helper, generates correct PHPDocs for all Facade classes, to improve auto-completion.
barryvdh/laravel-debugbar PHP Debugbar integration for Laravel
tymon/jwt-auth JSON Web Token Authentication for Laravel and Lumen
nunomaduro/collision Cli error handling for console/command-line PHP applications.
maatwebsite/excel Supercharged Excel exports and imports in Laravel
laravel/tinker Powerful REPL for the Laravel framework.
laravel/socialite Laravel wrapper around OAuth 1 & OAuth 2 libraries.
intervention/image Image handling and manipulation library with support for Laravel integration
facade/ignition A beautiful error page for Laravel applications.
livewire/livewire A front-end framework for Laravel.
fideloper/proxy Set trusted proxies for Laravel

我们再show一下显示其详细信息，执行：

composer show --all laravel/laravel

name     : laravel/laravel
descrip. : The Laravel Framework.
keywords : framework, laravel
versions : dev-master, 8.x-dev, .... // 当前最新的版本是8.x

安装laravel

比如5.2版本安装介绍界面：https://laravel.com/docs/5.2

如果是安装最新版本

D:\..\composer>composer create-project --prefer-dist laravel/laravel 项目文件名

如果要指定下载的版本（指定下载5.2版本的）

composer create-project --prefer-dist laravel/laravel 文件夹名称 "5.2.*"

之后本地访问：https://localhost/composer/laravel01/public/ 如果成功打开，代表安装成功。

使用安装器进行安装

composer global require "laravel/installer"

将~/.composer/vendor/bin目录添加到path变量中。（这里不是很懂以下奉上原文）

Make sure to place the~/.composer/vendor/bindirectory (or the equivalent directory for your OS) in your PATH so thelaravelexecutable can be located by your system.

接着在目标文件夹内执行 

D:\...\composer>laravel new 项目文件夹名称

如果要下载最新的版本，在已经下载了下载器的前提下，直接执行：

laravel new 项目文件夹名称 --dev //  下载最新的dev版本