Laravel框架学习 -- 安装

环境：mac os 10.10.5; php 5.6.9;

包管理： python 一般使用 pip

Laravel 利用 Composer（Composer 中文）来管理其自身的依赖包。

安装：

lpe234@lpe234demacbookpro:/Users/lpe234  $ brew tap josegonzalez/homebrew-php
Warning: Already tapped!
lpe234@lpe234demacbookpro:/Users/lpe234  $ brew install josegonzalez/php/composer
==> Installing composer from josegonzalez/homebrew-php
==> Downloading http://getcomposer.org/download/1.0.0-alpha10/composer.phar
######################################################################## 100.0%
==> Caveats
Verify your installation by running:
  "composer --version".

You can read more about composer and packagist by running:
  "brew home composer".
==> Summary
?  /usr/local/Cellar/composer/1.0.0-alpha10: 3 files, 1.0M, built in 58 seconds

lpe234@lpe234demacbookpro:/Users/lpe234  $ composer --version
Composer version 1.0.0-alpha10 2015-04-14 21:18:51

Laravel 框架安装

lpe234@lpe234demacbookpro:/Users/lpe234  $ composer global require "laravel/installer=~1.1"
Changed current directory to /Users/lpe234/.composer
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Installing symfony/process (v2.7.6)
    Downloading: 100%

  - Installing symfony/console (v2.7.6)
    Downloading: 100%

  - Installing guzzlehttp/promises (1.0.3)
    Downloading: 100%

  - Installing psr/http-message (1.0)
    Downloading: 100%

  - Installing guzzlehttp/psr7 (1.2.1)
    Downloading: 100%

  - Installing guzzlehttp/guzzle (6.1.0)
    Downloading: 100%

  - Installing laravel/installer (v1.2.2)
    Downloading: 100%

symfony/console suggests installing symfony/event-dispatcher ()
symfony/console suggests installing psr/log (For using the console logger)
Writing lock file
Generating autoload files

安装完成之后，配置环境变量。

export PATH=$PATH:~/.composer/vendor/bin

然后验证是否成功。重启terminal

lpe234@lpe234demacbookpro:/Users/lpe234  $ laravel --version
Laravel Installer version 1.2.2

创建一个项目

lpe234@lpe234demacbookpro:/Users/lpe234/PhpstormProjects  $ laravel new blog
Crafting application...
Generating optimized class loader
Application key [NhGlYwNWoJkRSW4ElhLghXy2FtAlZmBI] set successfully.
Application ready! Build something amazing.

异常：

RuntimeExceptionin EncryptionServiceProvider.php line 29:

No supported encrypter found. The cipher and / or key length are invalid.

php artisan key:generate

然后将生成的 32位key. 放到 config/app.php 下面的 APP_KEY ; 以及 .env 中的 APP_KEY

之后 php artisan serve 错误依旧~~~~~~~

问题已解决：

原因是未使用 sudo php artisan serve 导致无权限读取文件，无法获取APP_KEY

另外推荐不错的视频教程： https://laravist.com

补充：还有一个可能的原因是在系统环境中已设置 APP_KEY 这个优先级貌似高于 .env 文件中的设置