composer install遇到错误Your requirements could not be resolved

Your requirements could not be resolved to an installable set of packages.

执行composer install遇到错误：Your requirements could not be resolved to an installable set of packages. 这是因为不匹配composer.json要求的版本,错误代码如下

查看了下资料说是php版本不符,打开composer.json发现代码只要求大于7.0.0可仍然报这个错误,不用太较真执行如下代码之后在运行之前的代码就ok

composer install --ignore-platform-reqs 或者 composer update --ignore-platform-reqs