laravel安装intervention/image图像处理扩展 报错 intervention/image 2.3.7 requires ext-fileinfo

在安装intervention/image图像处理扩展 报错fileinfo is missing

报错信息如下：

\blog>composer require intervention/image
Using version ^2.3 for intervention/image
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
    - intervention/image 2.3.7 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.6 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.5 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.4 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.3 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.2 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.1 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.
    - intervention/image 2.3.0 requires ext-fileinfo * -> the requested PHP extension fileinfo is missing from your system.

出现此错误的原因是php.ini中的fileinfo扩展没有开启

开启 extension=php_fileinfo.dll

再重新安装就可以了’