解决 composer install 报错 laravel/horizon v3.7.2 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system

发表于 2020-04-26 | 分类于版本管理 | | 浏览次

字数统计: 150 | 阅读时长 ≈ 1

当我们在命令行运行 composer install ，出现了如下错误信息：

$ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for laravel/horizon v3.7.2 -> satisfiable by laravel/horizon[v3.7.2].
    - laravel/horizon v3.7.2 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.

  To enable extensions, verify that they are enabled in your .ini files:
    - D:\phpStudy\PHPTutorial\php\php-7.2.1-nts\php.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

解决方法：

使用 --ignore-platform-reqs 选项运行composer，并指定 pcntl 和 posix

1	composer install --ignore-platform-reqs