How can I solve "laravel/horizon v1.1.0 requires ext-pcntl * -> the requested PHP extension pcntl is missing from your system"?
PhpLaravelComposer PhpLaravel 5.5Laravel HorizonPhp Problem Overview
When I run composer install on command promp, there exist error like this :
Problem 1
- Installation request for laravel/horizon v1.1.0 -> satisfiable by laravel/horizon[v1.1.0].
- laravel/horizon v1.1.0 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:
- C:\xampp-7.1\php\php.ini
You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.
How can I solve this error?
Php Solutions
Solution 1 - Php
Run composer with the --ignore-platform-reqs option and specify pcntl and posix
composer install --ignore-platform-reqs
Solution 2 - Php
As per the accepted answer, but you can add this to your composer.json so that you don't have to run --ignore-platform-reqs all the time
"config": {
"platform": {
"ext-pcntl": "8.0",
"ext-posix": "8.0"
}
}
Solution 3 - Php
install horizon this way :
composer require laravel/horizon --ignore-platform-reqs
then run
php artisan horizon:install
Solution 4 - Php
pcntl extension is not supported on Windows. (based on your XAMPP information)
Please see these github issues on laravel/horizon page #131, #78.
I suggest you use Laravel Homestead on your Windows system, It is easy to setup and will save you from many of the similar problems in future.
Solution 5 - Php
If you are using docker based on a Unix image you can add it with the docker utility:
docker-php-ext-install pcntl
You can then confirm that this extension is installed and enabled inside of your container:
?> php -i | grep pcntl
/usr/local/etc/php/conf.d/docker-php-ext-pcntl.ini,
pcntl
pcntl support => enabled
Solution 6 - Php
Just run the following:
composer install --ignore-platform-reqs
Note: pcntl is not supported on Windows
Solution 7 - Php
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.
Solution 8 - Php
I have some problem and composer install --ignore-platform-reqs works for me
Thanks
Solution 9 - Php
This works for me
composer require laravel/horizon --ignore-platform-reqs
Hopefully it will help.
Solution 10 - Php
If you're running on windows 10 without homestead you can enable the linux subsystem and run horizon through that.
https://www.windowscentral.com/how-install-bash-shell-command-line-windows-10
Then install the requirements
sudo apt install php7.2-fpm php7.2-mbstring php7.2-xmlrpc php7.2-soap php7.2-gd php7.2-xml php7.2-cli php7.2-zip php7.2-mysql
This also can run laravel envoy too which doesn't work on windows.
It's a nice lightweight solution
Solution 11 - Php
$composer install --ignore-platform-reqs ext-pcntl
Solution 12 - Php
The answer to simply ignore the dependency is wrong. That isn't going to give you a working version of Horizon or whatever package you may be hoping to install. The dependencies must be installed.
Examples of how to install:
APK
sudo add php8-pcntl php8-pcntl
Yum
sudo yum install -y php-pcntl php-posix
Solution 13 - Php
add this line
RUN docker-php-ext-install pcntl
before
RUN composer install