composer require第三方包，错误To enable extensions, verify that they are

xiaohei

composer require第三方包的时候，发生如下错误

1. D:\study\shop>composer require laravel/jetstream
   
2. Using version ^1.6 for laravel/jetstream
   
3. ./composer.json has been updated
   
4. Loading composer repositories with package information
   
5. Updating dependencies (including require-dev)
   
6. Your requirements could not be resolved to an installable set of packages.
   
7. 
   
8.   Problem 1
   
9.     - laravel/horizon v5.4.0 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
   
10.     - laravel/horizon v5.4.0 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
    
11.     - laravel/horizon v5.4.0 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system.
    
12.     - Installation request for laravel/horizon (locked at v5.4.0, required as ^5.4) -> satisfiable by laravel/horizon[v5.4.0].
    
13. 
    
14.   To enable extensions, verify that they are enabled in your .ini files:
    
15.     - D:\phpstudy_pro\Extensions\php\php7.4.3nts\php.ini
    
16.   You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
    
17. 
    
18. Installation failed, reverting ./composer.json to its original content.

复制代码

解决方法
带上引包的时候带上--ignore-platform-reqs

1. composer require laravel/jetstream --ignore-platform-reqs

复制代码