Composer php 是否使用sudo何时执行；作曲家要求；指挥部？

通常，它会遇到问题

不要以root/super用户身份运行Composer！看见https://getcomposer.org/root 有关详细信息

何时执行

sudo composer需要一些软件包

这是我安装swiftmailer的记录。
首先，要执行

composer，需要一些不带
sudo
的包

debian9@machine:~$ composer require "swiftmailer/swiftmailer:^6.0"
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)

Installation failed, reverting ./composer.json to its original content.


  [RuntimeException]                                                           
  /home/debian9/vendor/doctrine/lexer does not exist and could not be created  
  .                                                                            


require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--] [<packages>]...

我很困惑，如果没有
sudo
，swiftmailer就无法安装，如果没有
sudo
，就会出现错误
不要以root/super用户身份运行Composer
 您过去可能使用
sudo
运行过Composer。这使得root拥有
vendor/
下的一些目录，使您无法正常使用Composer

将整个
供应商
目录的所有权更改为您的shell用户，或完全删除该目录。（您需要以root用户身份执行此操作。）完成此操作后，您应该能够正常使用Composer。
您过去可能使用
sudo
运行过Composer。这使得root拥有
vendor/
下的一些目录，使您无法正常使用Composer

将整个
供应商
目录的所有权更改为您的shell用户，或完全删除该目录。（您需要以root用户身份执行此操作。）完成此操作后，您应该能够正常使用Composer

debian9@machine:~$ sudo  composer require "swiftmailer/swiftmailer:^6.0"
Do not run Composer as root/super user! See https://getcomposer.org/root for details
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
  - Installing doctrine/lexer (v1.0.1)
    Downloading: 100%         

  - Installing egulias/email-validator (2.1.6)
    Downloading: 100%         

  - Installing swiftmailer/swiftmailer (v6.1.3)
    Downloading: 100%         

egulias/email-validator suggests installing ext-intl (PHP Internationalization Libraries are required to use the SpoofChecking validation)
swiftmailer/swiftmailer suggests installing ext-intl (Needed to support internationalized email addresses)
swiftmailer/swiftmailer suggests installing true/punycode (Needed to support internationalized email addresses, if ext-intl is not installed)
Writing lock file
Generating autoload files