How can I solve “laravel/horizon v1.1.0 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system”?

Question

When I run composer install on command promp, there exist error like this :

  Problem 1
    - Installation request for laravel/horizon v1.1.0 ->         


        

Answer 1

I have installed PHP 7.2 instead of 7.1 and everything works fine now. It appears that pcntl was not present in 7.1 but it's installed with php 7.2.

Answer 2

Just run the following:

composer install --ignore-platform-reqs

Note: pcntl is not supported on Windows

Answer 3

install horizon this way :

composer require laravel/horizon --ignore-platform-reqs

then run

php artisan horizon:install

Answer 4

I have some problem and composer install --ignore-platform-reqs works for me

Thanks