或者重启治百病？

生态决定一切吧，yii2当情怀了~

composer create-project --prefer-dist yiisoft/yii2-app-basic basic
Creating a "yiisoft/yii2-app-basic" project at "./basic"
Installing yiisoft/yii2-app-basic (2.0.45)
  - Downloading yiisoft/yii2-app-basic (2.0.45)
  - Installing yiisoft/yii2-app-basic (2.0.45): Extracting archive
Created project in D:\web\test_yii2\basic
Loading composer repositories with package information

                                                                   
  [Composer\Downloader\TransportException]                                      
  curl error 28 while downloading https://asset-packagist.org/p/provider-latest/3f8b6244ca39fbcf0674f46a4055dd4ffc720
  967897769294e951cfef45dfb03.json: Operation timed out after 300000 milliseconds with 4759552 out of 8584199 bytes r
  eceived                                                                       
                                                                                

create-project [-s|--stability STABILITY] [--prefer-source] [--prefer-dist] [--prefer-install PREFER-INSTALL] [--repository REPOSITORY] [--repository-url REPOSITORY-URL] [--add-repository] [--dev] [--no-dev] [--no-custom-installers] [--no-scripts] [--no-progress] [--no-secure-http] [--keep-vcs] [--remove-vcs] [--no-install] [--ignore-platform-req IGNORE-PLATFORM-REQ] [--ignore-platform-reqs] [--ask] [--] [<package>] [<directory>] [<version>]