[安装步骤](https://www.cnblogs.com/lichihua/diary/2018/08/28/9547627.html) 成功安装`Swoole`之后，通过`php --ri swoole`查看`Swoole 扩展`的信息: ``` php --ri swoole ``` ``` swoole Swoole => enabled Author => Swoole Team <team@swoole.com> Version => 4.4.23 Built => Feb 15 2021 14:41:33 coroutine => enabled epoll => enabled eventfd => enabled signalfd => enabled cpu_affinity => enabled spinlock => enabled rwlock => enabled pcre => enabled zlib => 1.2.7 mutex_timedlock => enabled pthread_barrier => enabled futex => enabled async_redis => enabled Directive => Local Value => Master Value swoole.enable_coroutine => On => On swoole.enable_library => On => On swoole.enable_preemptive_scheduler => Off => Off swoole.display_errors => On => On swoole.use_shortname => On => On swoole.unixsock_buffer_size => 8388608 => 8388608 ``` 查找特定端口的进程 netstat -anp|grep 9501