Big Sur: Reinstall PHP / Apache

During trying to install Valet Plus on OSX Php became buggy.

PHP Warning:  PHP Startup: Unable to load dynamic library 'apc.so' (tried: /usr/local/lib/php/pecl/20190902/apc.so (dlopen(/usr/local/lib/php/pecl/20190902/apc.so, 9): Symbol not found: _zif_apcu_add
  Referenced from: /usr/local/lib/php/pecl/20190902/apc.so
  Expected in: flat namespace
 in /usr/local/lib/php/pecl/20190902/apc.so), /usr/local/lib/php/pecl/20190902/apc.so.so (dlopen(/usr/local/lib/php/pecl/20190902/apc.so.so, 9): image not found)) in Unknown on line 0

Warning: PHP Startup: Unable to load dynamic library 'apc.so' (tried: /usr/local/lib/php/pecl/20190902/apc.so (dlopen(/usr/local/lib/php/pecl/20190902/apc.so, 9): Symbol not found: _zif_apcu_add
  Referenced from: /usr/local/lib/php/pecl/20190902/apc.so
  Expected in: flat namespace
 in /usr/local/lib/php/pecl/20190902/apc.so), /usr/local/lib/php/pecl/20190902/apc.so.so (dlopen(/usr/local/lib/php/pecl/20190902/apc.so.so, 9): image not found)) in Unknown on line 0

For several hours I tried to fix the issues until I gave up.

Instead it makes more sense to reinstall the original PHP setup Big Sur (OSX) came with. Is there any way to "roll back", or reinstall the code setup?

Or do I really have to install OSX again?

Thanks for help