安装系统或模块时，执行composer install报错 - 常见问题整理

系统安装

composer

只看Problem部分

第一种：not match

Problem 1
- Root composer.json requires phpmailer/phpmailer ^6.8, found phpmailer/phpmailer[dev-dependabot/github_actions/ossf/scorecard-action-2.2.0, dev-master, dev-5.2-stable, dev-polyfills-2.0, dev-php-8.2, v5.2.2, ..., v5.2.28, v6.0.0rc1, ..., v6.7.1] but it does not match the constraint.
Problem 2
- Root composer.json requires w7corp/easywechat ^6.12, found w7corp/easywechat[6.x-dev] but it does not match your minimum-stability.
Problem 3
- Root composer.json requires topthink/think-migration ^3.0 -> satisfiable by topthink/think-migration[v3.0.0, ..., v3.0.5].
- topthink/think-migration[v3.0.0, ..., v3.0.5] require topthink/framework ^6.0 -> found topthink/framework[v6.0.0, ..., v6.1.4] but it conflicts with your root composer.json require (^8.0.0).

第二种：require **** -> it is missing from your system.

Problem 1
    - Root composer.json requires w7corp/easywechat ^6.12 -> satisfiable by w7corp/easywechat[6.12.0, ..., 6.12.9].
    - w7corp/easywechat[6.12.0, ..., 6.12.9] require ext-sodium * -> it is missing from your system. Install or enable PHP's sodium extension.

To enable extensions, verify that they are enabled in your .ini files:
    - D:\phpEnv\php\php-8.0\php.ini
You can also run `php --ini` in a terminal to see which files are used by PHP in CLI mode.
Alternatively, you can run Composer with `--ignore-platform-req=ext-sodium` to temporarily ignore these required extensions.