我得到的问题与php fpm，php71w mysql没有安装在服务器上，当我想安装它，我得到了这个错误

yum --enablerepo=webtatic install php71w-mysql
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
Resolving Dependencies
--> Running transaction check
---> Package php71w-mysql.x86_64 0:7.1.16-1.w7 will be installed
--> Processing Dependency: libmysqlclient.so.18(libmysqlclient_18)(64bit) for package: php71w-mysql-7.1.16-1.w7.x86_64
--> Processing Dependency: libmysqlclient.so.18()(64bit) for package: php71w-mysql-7.1.16-1.w7.x86_64
--> Running transaction check
---> Package mariadb-libs.x86_64 1:5.5.56-2.el7 will be installed
--> Processing Conflict: MariaDB-common-10.1.31-1.el7.centos.x86_64 conflicts mariadb-libs < 1:10.1.31-1.el7.centos
--> Finished Dependency Resolution
Error: MariaDB-common conflicts with 1:mariadb-libs-5.5.56-2.el7.x86_64
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

另外，在phpinfo（）中找不到pdo mysql驱动程序，有什么问题？
请在这里查看图片