composer创建tp项目，提示You can also run `php --ini`解决方法

To enable extensions, verify that they are enabled in your .ini files:
    - D:\phpStudy\PHPTutorial\php\php-7.2.1-nts\php.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

Installation failed, reverting ./composer.json to its original content.

查找原因是php需要开启fileinfo扩展，

编辑php.ini文件，打开extension=php_fileinfo.dll 就可以了，重新运行composer命令，安装成功