安装 Laravel 遇到问题？你需要更新 composer.json 文件

$ php composer.phar create-project --prefer-dist laravel/laravel blog
Installing laravel/laravel (v5.2.15)
- Installing laravel/laravel (v5.2.15)
Loading from cache
 
Created project in blog
> php -r "copy('.env.example', '.env');"
> php artisan clear-compiled
PHP Warning: require(/home/vagrant/laraveltest/blog/bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in /home/vagrant/laraveltest/blog/bootstrap/autoload.php on line 17
PHP Fatal error: require(): Failed opening required '/home/vagrant/laraveltest/blog/bootstrap/../vendor/autoload.php' (include_path='.:/usr/share/pear:/usr/share/php') in /home/vagrant/laraveltest/blog/bootstrap/autoload.php on line 17
Script php artisan clear-compiled handling the pre-update-cmd event returned with an error
 
 
[RuntimeException]
Error Output: PHP Warning: require(/home/vagrant/laraveltest/blog/bootstrap/../vendor/autoload.php): failed to open stream: No such file or directory in /home/vagrant/laraveltest/bl
og/bootstrap/autoload.php on line 17
PHP Fatal error: require(): Failed opening required '/home/vagrant/laraveltest/blog/bootstrap/../vendor/autoload.php' (include_path='.:/usr/share/pear:/usr/share/php') in /home/vagr
ant/laraveltest/blog/bootstrap/autoload.php on line 17
 
 
create-project [-s|--stability STABILITY] [--prefer-source] [--prefer-dist] [--repository REPOSITORY] [--repository-url REPOSITORY-URL] [--dev] [--no-dev] [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--keep-vcs] [--no-install] [--ignore-platform-reqs] [--] [<package>] [<directory>] [<version>]

这是由于 Composer 最近更新了 

pre-update-command

 的工作方式，而这会使得 Laravel
安装失败。

@Jordi Boggiano 给出的原因如下：

这是由于缺少 composer.lock 文件，因此最初的 

install

 命令被 

update

 操作替代，因为它会触发 

pre-update-cmd

，而在这之前是触发的 

pre-install-cmd

。

幸运的是，修复这个问题非常简单，只需要把 

php artisan clear-compiled

 移动到 

post-update-command

 即可：





这里是完整的 ChangeLog。