centos7.5下添加gd库然后mysql拓展库没了mysql拓展的配置也没问题，phpinfo中就是没有mysql拓展

centos7.5下添加gd库然后mysql拓展库没了，mysql拓展的配置也没问题，phpinfo中就是没有mysql拓展。

php -v  报错如下：

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysqli.so'

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so'

[[email protected]_0_14_centos modules]# php -v

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysqli.so' - libmysqlclient.so.18: cannot open shared object file: No such file or directory in Unknown on line 0

Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysqli.so' - libmysqlclient.so.18: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so' - libmysqlclient.so.18: cannot open shared object file: No such file or directory in Unknown on line 0

Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so' - libmysqlclient.so.18: cannot open shared object file: No such file or directory in Unknown on line 0
PHP 5.4.16 (cli) (built: Nov  1 2019 16:04:20) 
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies

如果msyqli.so 的配置都没问题的情况，试下卸载mysqli.so拓展,  如：yum remove php-mysqli   ;然后再重新装php-mysqli ,

yum install -y php-mysqli  

重启php-fpm：

systemctl restart php-fpm  

重启nginx服务器：

systemctl restart nginx

php -v查看有没有报错

以上都是在centos7.5下的命令行操作的，其他系统类似。

再通过phpinfo.php 查看有没有mysql拓展，有则问题解决。

好像是系统本身的bug。