1. 在php7.4中安装swoole，但找不到这个扩展安装
2. 服务器下载源码解压安装
http://pecl.php.net/package/swoole
下载4.8.0版本
解压到/www/server/php/74/下
3. 发现报错问题；
更新一下依赖
yum update
yum -y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel e2fsprogs e2fsprogs-devel krb5-devel libidn libidn-devel openssl openssl-devel nss_ldap openldap openldap-devel openldap-clients openldap-servers libxslt-devel libevent-devel ntp libtool-ltdl bison libtool vim-enhanced 
4. 删除缓存
make clean
make distclean
sudo rm -rf modules/5. 输入命令
# 编译安装
/www/server/php/74/bin/phpize
./configure --with-php-config=/www/server/php/74/bin/php-config --enable-openssl
make
sudo make install
开始编译
耐心等待
成功
修改配置文件
6.配置 PHP
extension=swoole.so
参考链接：
linux 宝塔 nginx php8.0 安装swoole/调试(测试)小白详细图文教程_swoole loader8.0-CSDN博客
Swoole Documents (简体中文)
https://wenku.csdn.net/answer/y5s6yncckz