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[root@iZ5idcd7hxknovZ ~]# composer require workerman/mqtt --ignore-platform-reqs
PHP Warning: PHP Startup: curl: Unable to initialize module
Module compiled with module API=20100525
PHP compiled with module API=20190902
These options need to match
in Unknown on line 0

Installation failed, deleting ./composer.json.

In RequireCommand.php line 225:

No composer.json present in the current directory (./composer.json), this m
ay be the cause of the following exception.

In PackageDiscoveryTrait.php line 356:

Could not find package workerman/mqtt. It was however found via repository
search, which indicates a consistency issue with the repository.

require [--dev] [--dry-run] [--prefer-source] [--prefer-dist] [--prefer-install PREFER-INSTALL] [--fixed] [--no-suggest] [--no-progress] [--no-update] [--no-install] [--no-audit] [--audit-format AUDIT-FORMAT] [--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>...]

[root@iZ5idcd7hxknovZ ~]# composer require workerman/mqtt:dev-master --ignore-platform-reqs
PHP Warning: PHP Startup: curl: Unable to initialize module
Module compiled with module API=20100525
PHP compiled with module API=20190902
These options need to match
in Unknown on line 0
./composer.json has been created
Running composer update workerman/mqtt
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

Problem 1

• Root composer.json requires workerman/mqtt, it could not be found in any version, there may be a typo in the package name.

Potential causes:

• A typo in the package name
• The package is not available in a stable-enough version according to your minimum-stability setting
  see https://getcomposer.org/doc/04-schema.md#minimum-stability for more details.
• It's a private package and you forgot to add a custom repository to find it

Read https://getcomposer.org/doc/articles/troubleshooting.md for further common problems.

Installation failed, deleting ./composer.json.
[root@iZ5idcd7hxknovZ ~]#

不知道怎么貼圖片，我把信息都復(fù)制過(guò)來(lái)了

就是編輯你的問(wèn)題 在里面把截圖放進(jìn)去

執(zhí)行 composer config -g --unset repos.packagist 刪除composer代理

成功了，非常感謝；已贊助，一點(diǎn)心意；新年快樂(lè)，萬(wàn)分感謝?。?！

加了還是不成功呢

我的是 PHP 7.4.15 (cli) (built: Feb 21 2021 11:34:37) ( NTS )