Mac使用brew找不到php7.1
[https://blog.csdn.net/weixin_44253824/article/details/104078107]
切換版本后，修復 dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.64.dylib
[https://stackoverflow.com/questions/53828891/dyld-library-not-loaded-usr-local-opt-icu4c-lib-libicui18n-62-dylib-error-run]
I am actually quite surprised that this solution has not been presented yet, and I feel like it is the easiest solution.
Go to GitHub, find the version of the brewfile that matches the version of icu4c that you need and get the raw version of the file (follow the links above and click View File then Raw).
Then just have brew reinstall from that url.
For example, version 62.1:
brew reinstall https://raw.githubusercontent.com/Homebrew/homebrew-core/575eb4bbef683551e19f329f60456b13a558132f/Formula/icu4c.rb
、
安裝切換版本命令 brew install brew-php-switcher brew-php-switcher 7.2
修復切換后 dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.64.dylib brew switch icu4c 62.1 brew switch icu4c 64.2