[root@localhost html]# yum update

[root@localhost html]# yum install php72w-devel
[root@localhost html]# yum install php72w-pear
[root@localhost html]# yum install gcc
[root@localhost html]# yum install gcc-c++
[root@localhost html]# yum install gcc-g77

[root@localhost html]# pecl install swoole
...
// 是否启用 PHP Sockets 支持
enable sockets supports"htmlcode">

Build process completed successfully
Installing '/usr/lib64/php/modules/swoole.so'
Installing '/usr/include/php/ext/swoole/config.h'
install ok: channel://pecl.php.net/swoole-4.4.12
configuration option "php_ini" is not set to php.ini location
You should add "extension=swoole.so" to php.ini




安装失败


PHP Startup: Unable to load dynamic library 'swoole.so' (tried: /usr/lib64/php/modules/swoole.so (/usr/lib64/php/modules/swoole.so: cannot open shared object file: No such file or directory), /usr/lib64/php/modules/swoole.so.so (/usr/lib64/php/modules/swoole.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
// 把extension=swoole.so加到socket的加载后面,在php7.2中进入/etc/php.d下,在sockets.ini中将extension=swoole.so加到extension=sockets.so下面,后重启php-fpm



php -m或者 phpinfo()查看不到swoole
解决方法：
1. 确认安装和配置是否有问题

2、如果使用php -m无法查看swoole，请使用命令service php-fpm restart重启

3、如果使用phpinfo()无法查看swoole，请使用命令service httpd restart重启




C++ preprocessor “/lib/cpp” fails sanity check
// 没有c++库
// yum install glibc-headers
// yum install gcc gcc-c++ gcc-g77





fatal error: openssl/ssl.h: No such file or directory
// 没有openssl/ssl此类文件或目录
// yum install openssl-devel





error “Enable http2 support, require nghttp2 library.
// wget https://github.com/nghttp2/nghttp2/releases/download/v1.34.0/nghttp2-1.34.0.tar.bz2
// tar -xjf nghttp2-1.34.0.tar.bz2





PHP Warning: Module 'swoole' already loaded in Unknown on line 0
// 在修改配置时extension=swoole.so别放在最后，最好放在extension=sockets.so后面




  
修改配置



[root@localhost html]# vim /etc/php.ini
...
extension=swoole.so
....




  
重启



[root@localhost html]# /bin/systemctl restart php-fpm.service
[root@localhost html]# /bin/systemctl restart httpd.service




  
验证是否安装成功



php -m 或者 phpinfo() 查看是否有swoole






[root@localhost /]# php --ri swoole



希望本文所述对大家centos系统配置有所帮助。