无论是通过pecl安装redis，还是下载压缩包自己编译，生成的redis.so执行时总是会提示：

Warning: PHP Startup: Unable to load dynamic library 'redis.so' (tried: /opt/homebrew/lib/php/pecl/20190902/redis.so (dlopen(/opt/homebrew/lib/php/pecl/20190902/redis.so, 0x0009): tried: '/opt/homebrew/lib/php/pecl/20190902/redis.so' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/local/lib/redis.so' (no such file), '/usr/lib/redis.so' (no such file)), /opt/homebrew/lib/php/pecl/20190902/redis.so.so (dlopen(/opt/homebrew/lib/php/pecl/20190902/redis.so.so, 0x0009): tried: '/opt/homebrew/lib/php/pecl/20190902/redis.so.so' (no such file), '/usr/local/lib/redis.so.so' (no such file), '/usr/lib/redis.so.so' (no such file))) in Unknown on line 0

上面那两种方法下载的扩展只适用于x86机器，m1不能用，解决办法：

arch -arm64 sudo pecl install redis

参考内容：Does the Redis PHP extension installed through PECL work on Mac M1? - Stack Overflow