Homestead 使用 pecl 安装 swoole 扩展

环境说明及版本说明：
Homestead v10.7.0
swoole v4.4.17

1.安装swoole

vagrant@homestead:~$ sudo pecl install swoole

• 遇到以下错误

  WARNING: channel "pecl.php.net" has updated its protocols, use "pecl channel-update pecl.php.net" to update
  Could not download from "https://pecl.php.net/get/mongodb-1.5.5.tgz", cannot download "pecl/mongodb" (Connection to `ssl://pecl.php.net:443' failed: )
  Error: cannot download "pecl/mongodb"
  Download failed
  install failed

• 解决方法：

  vagrant@homestead:~$ sudo pecl channel-update pecl.php.net

• 重新安装

  vagrant@homestead:~$ sudo pecl install swoole

  安装的时候会有yes/no之类的选项，直接 enter就可以了
  出现如下文字说明已经安装成功：

  Build process completed successfully
  Installing '/usr/lib/php/20180731/swoole.so'
  Installing '/usr/include/php/20180731/ext/swoole/config.h'
  install ok: channel://pecl.php.net/swoole-4.4.17
  configuration option "php_ini" is not set to php.ini location
  You should add "extension=swoole.so" to php.ini

  2.开启扩展

• 查看当前PHP版本

  vagrant@homestead:~$ php -v
  PHP 7.3.7-2+ubuntu18.04.1+deb.sury.org+1 (cli) (built: Jul 25 2019 11:44:59) ( NTS )
  Copyright (c) 1997-2018 The PHP Group
  Zend Engine v3.3.7, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.3.7-2+ubuntu18.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies

• 创建配置文件

  vagrant@homestead:~$ sudo touch /etc/php/7.3/mods-available/swoole.ini

• 写入以下内容

  extension=swoole.so

• 添加软连接

  vagrant@homestead:/etc/php/7.3/cli/conf.d$ sudo ln -s /etc/php/7.3/mods-available/swoole.ini ./20-swoole.ini

• 重启php-fpm

  sudo service php7.3-fpm restart

• 查看扩展

  vagrant@homestead:/etc/php/7.3/cli/conf.d$ php --ri swoole

  如果出现以下内容说明已经安装成功

  swoole
  Swoole => enabled
  Author => Swoole Team <team@swoole.com>
  Version => 4.4.17
  Built => Apr 17 2020 20:14:41
  coroutine => enabled
  epoll => enabled
  eventfd => enabled
  signalfd => enabled
  cpu_affinity => enabled
  spinlock => enabled
  rwlock => enabled
  pcre => enabled
  zlib => 1.2.11
  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

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