E:\php\tp6> composer require topthink/think-multi-app Info from https://repo.packagist.org: #StandWithUkraine Using version ^1.0 for topthink/think-multi-app ./composer.json has been updated Running composer update topthink/think-multi-app Loading composer repositories with package information Updating dependencies Lock file operations: 1 install, 0 updates, 0 removals - Locking topthink/think-multi-app (v1.0.14) Writing lock file Installing dependencies from lock file (including require-dev) Package operations: 1 install, 0 updates, 0 removals - Installing topthink/think-multi-app (v1.0.14): Extracting archive Generating autoload files > @php think service:discover Succeed! > @php think vendor:publish File E:\php\tp6\config\trace.php exist! Succeed! 6 packages you are using are looking for funding. Use the `composer fund` command to find out more!   安装注意php的版本，一定要正确的php版本，才能使用composer安装正确的程序，并不是在任何php版本下都可以下载ThinkPHP6.0的think-multi-app安装的。 安装时，如遇单机使用多个php版本，请注意修改环境变量中的php路径，至少在使用composer安装时，环境变量中的php版本是正确的。