基于 Composer 安装 laravel/horizon 时，报错：Package laravel/horizon at version ~5.6 has requirements incompatible with your PHP version, PHP extensions and Composer version
1、基于 Composer 安装 laravel/horizon 时，报错：Package laravel/horizon at version ~5.6 has requirements incompatible with your PHP version, PHP extensions and Composer version。如图1
图1
1 2 3 4 5 6 7 8 9 10 11 12 13 | PS E:\wwwroot\larabbs> composer require "laravel/horizon:~5.6" [InvalidArgumentException] Package laravel/horizon at version ~5.6 has requirements incompatible with your PHP version, PHP extensions and Com poser version: - laravel/horizon v5.7.17 requires ext-pcntl * but it is not present. - laravel/horizon v5.7.17 requires ext-posix * but it is not present.require [--dev] [--dry-run] [--prefer-source] [--prefer-dist] [--prefer-install PREFER-INSTALL] [--fixed] [--no-suggest] [--no-progress] [--no-update] [--no-install] [--no-scripts] [--update-no-dev] [-w|--update-with-dependencies] [-W|--update-with-all-dependencies] [--with-dependencies] [--with-all-dependencies] [--ignore-platform-req IGNORE-PLATFORM-REQ] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--apcu-autoloader-prefix APCU-AUTOLOADER-PREFIX] [--] [<packages>]...PS E:\wwwroot\larabbs> |
2、基于提示信息，安装 PHP 扩展：pcntl、posix，但是 pcntl 在 Windows 下不可用。如图2
图2
3、最终决定，先在本地 Windows 中安装起来，后续在 Linux 中运行就是。启用选项：–ignore-platform-reqs ，忽略所有平台要求（php、hhvm、lib-* 和 ext-*）并强制安装，即使本地机器不满足这些要求。安装成功。如图3
图3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | PS E:\wwwroot\larabbs> composer require "laravel/horizon:~5.6" --ignore-platform-reqs./composer.json has been updatedRunning composer update laravel/horizonLoading composer repositories with package informationUpdating dependenciesLock file operations: 1 install, 0 updates, 0 removals - Locking laravel/horizon (v5.7.17)Writing lock fileInstalling dependencies from lock file (including require-dev)Package operations: 1 install, 0 updates, 0 removals - Downloading laravel/horizon (v5.7.17) - Installing laravel/horizon (v5.7.17): Extracting archive1 package suggestions were added by new dependencies, use `composer suggest` to see details.Package swiftmailer/swiftmailer is abandoned, you should avoid using it. Use symfony/mailer instead.Generating optimized autoload files> Illuminate\Foundation\ComposerScripts::postAutoloadDump> @php artisan package:discover --ansiDiscovered Package: barryvdh/laravel-debugbarDiscovered Package: facade/ignitionDiscovered Package: fruitcake/laravel-corsDiscovered Package: intervention/imageDiscovered Package: laravel/horizonDiscovered Package: laravel/sailDiscovered Package: laravel/sanctumDiscovered Package: laravel/tinkerDiscovered Package: laravel/uiDiscovered Package: mews/captchaDiscovered Package: mews/purifierDiscovered Package: nesbot/carbonDiscovered Package: nunomaduro/collisionDiscovered Package: overtrue/laravel-langDiscovered Package: summerblue/generatorDiscovered Package: summerblue/laravel-activePackage manifest generated successfully.83 packages you are using are looking for funding.Use the `composer fund` command to find out more!> @php artisan vendor:publish --tag=laravel-assets --ansi --forceCopied Directory [\vendor\laravel\horizon\public] To [\public\vendor\horizon]Publishing complete.PS E:\wwwroot\larabbs> |
4、安装完毕，浏览器打开 larabbs.local/horizon 访问控制台。符合预期。如图4
图4
5、只不过不能够使用 horizon 命令来启动队列系统和任务监控。报错：Call to undefined function Laravel\Horizon\Console\pcntl_async_signals() 。如图5
图5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | PS E:\wwwroot\larabbs> php artisan horizonHorizon started successfully. Error Call to undefined function Laravel\Horizon\Console\pcntl_async_signals() at E:\wwwroot\larabbs\vendor\laravel\horizon\src\Console\HorizonCommand.php:48 44▕ ); 45▕ 46▕ $this->info('Horizon started successfully.'); 47▕ ➜ 48▕ pcntl_async_signals(true); 49▕ 50▕ pcntl_signal(SIGINT, function () use ($master) { 51▕ $this->line('Shutting down...'); 52▕ 1 E:\wwwroot\larabbs\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:36 Laravel\Horizon\Console\HorizonCommand::handle(Object(Laravel\Horizon\Repositories\RedisMasterSupervisorRepository)) 2 E:\wwwroot\larabbs\vendor\laravel\framework\src\Illuminate\Container\Util.php:40 Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()PS E:\wwwroot\larabbs> |
6、后续在安装其他扩展时，也需要添加参数： –ignore-platform-reqs，否则会报错。不过，强烈建议不要使用此参数，后续会出现不可预计的问题。如图6
图6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | PS E:\wwwroot\larabbs> composer require "spatie/laravel-permission:~3.0"./composer.json has been updatedRunning composer update spatie/laravel-permissionLoading composer repositories with package informationUpdating dependenciesYour requirements could not be resolved to an installable set of packages. Problem 1 - laravel/horizon is locked to version v5.7.17 and an update of this package was not requested. - laravel/horizon v5.7.17 requires ext-pcntl * -> it is missing from your system. Install or enable PHP's pcntl extension.To enable extensions, verify that they are enabled in your .ini files: - C:\php-7.4.27\php.iniYou can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.Installation failed, reverting ./composer.json and ./composer.lock to their original content.PS E:\wwwroot\larabbs> git statusOn branch mainYour branch is up to date with 'origin/main'.nothing to commit, working tree cleanPS E:\wwwroot\larabbs> composer require "spatie/laravel-permission:~3.0" --ignore-platform-reqs./composer.json has been updatedRunning composer update spatie/laravel-permissionLoading composer repositories with package informationUpdating dependenciesLock file operations: 1 install, 0 updates, 0 removals - Locking spatie/laravel-permission (3.18.0)Writing lock fileInstalling dependencies from lock file (including require-dev)Package operations: 1 install, 0 updates, 0 removals - Downloading spatie/laravel-permission (3.18.0) - Installing spatie/laravel-permission (3.18.0): Extracting archivePackage swiftmailer/swiftmailer is abandoned, you should avoid using it. Use symfony/mailer instead.Generating optimized autoload files> Illuminate\Foundation\ComposerScripts::postAutoloadDump> @php artisan package:discover --ansiDiscovered Package: barryvdh/laravel-debugbarDiscovered Package: facade/ignitionDiscovered Package: fruitcake/laravel-corsDiscovered Package: intervention/imageDiscovered Package: laravel/horizonDiscovered Package: laravel/sailDiscovered Package: laravel/sanctumDiscovered Package: laravel/tinkerDiscovered Package: laravel/uiDiscovered Package: mews/captchaDiscovered Package: mews/purifierDiscovered Package: nesbot/carbonDiscovered Package: nunomaduro/collisionDiscovered Package: overtrue/laravel-langDiscovered Package: spatie/laravel-permissionDiscovered Package: summerblue/generatorDiscovered Package: summerblue/laravel-activePackage manifest generated successfully.84 packages you are using are looking for funding.Use the `composer fund` command to find out more!> @php artisan vendor:publish --tag=laravel-assets --ansi --forceCopied Directory [\vendor\laravel\horizon\public] To [\public\vendor\horizon]Publishing complete.PS E:\wwwroot\larabbs> |
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