Try disabling opcache by

opcache.enable=0

And if not working then,

codesign -v /opt/homebrew/Cellar/php/8.4.5_1/lib/php/20240924/opcache.so

Run this to verify signature of the opcache extension.

If not working clear safari cache.

If still not working try php 7.4 I hope it will be fine. And these should resolve the problem. Best of luck.