Is there a way to install a specific version / downgrade to a specific patch version?

[alexander-schranz]

I have currently 8.1.21 installed but need for testing downgrade to 8.1.18. Is there a way to achieve this?

[shivammathur]

https://stackoverflow.com/questions/75835275/how-to-install-specific-older-php-8-1-version-on-mac-using-brew/75848252#75848252

[alexander-schranz]

Thx that looks promising. Do you have a hint maybe also for the following error after it instaleld 8.1.18 in my case I run into following error when run php -v:

dyld[22531]: Library not loaded: '/opt/homebrew/opt/icu4c/lib/libicuio.72.dylib'
  Referenced from: '/opt/homebrew/Cellar/php@8.1/8.1.18_1/bin/php'
  Reason: tried: '/opt/homebrew/opt/icu4c/lib/libicuio.72.dylib' (no such file), '/usr/local/lib/libicuio.72.dylib' (no such file), '/usr/lib/libicuio.72.dylib' (no such file), '/opt/homebrew/Cellar/icu4c/73.2/lib/libicuio.72.dylib' (no such file), '/usr/local/lib/libicuio.72.dylib' (no such file), '/usr/lib/libicuio.72.dylib' (no such file)
fish: Job 1, 'php --version' terminated by signal SIGABRT (Abort

Update: Answer see: #1824 (comment)

[shivammathur]

Please Install it from the source, that way you will link it to the latest libraries.

brew reinstall -s shivammathur/php/php@8.1

[alexander-schranz]

Works, Thank you!