我最近在 OS X 10.9 Mavericks 上通过 MacPorts 安装了 nginx 和 PHP-FPM，虽然它可以工作，但我的主要 error_log 一直说端口 80 正在使用中。
2013/10/25 11:27:36 [emerg] 4510#0: bind() to 0.0.0.0:80 failed (48: Address already in use)
2013/10/25 11:27:36 [notice] 4510#0: try again to bind() after 500ms
2013/10/25 11:27:36 [emerg] 4510#0: bind() to 0.0.0.0:80 failed (48: Address already in use)
2013/10/25 11:27:36 [notice] 4510#0: try again to bind() after 500ms
2013/10/25 11:27:36 [emerg] 4510#0: bind() to 0.0.0.0:80 failed (48: Address already in use)
2013/10/25 11:27:36 [notice] 4510#0: try again …