abstract：composer create-project topthink/think=5.1.* tp5安装thinkphp 5.1
composer create-project topthink/think=5.1.* tp5
安装thinkphp 5.1
Correcting teacher：天蓬老师Correction time：2020-03-08 17:36:52
Teacher's summary：指令是正确的, 但作业显然不是考察这个...........
