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前置条件：
XAMPP安装：https://blog.csdn.net/henni_719/article/details/86357949
配置phpMyAdmin：https://blog.csdn.net/henni_719/article/details/86358513
打开phpmyadmin界面，选择SQL，进行如下操作：
一、创建数据库wikidb
create DATABASE wikidb;
二、在wikidb创建用户wikiuser并设置密码：
CREATE USER 'risk'@'localhost' IDENTIFIED BY '123456'
CREATE USER 'risk'@'127.0.0.1' IDENTIFIED BY '123456'
CREATE USER 'risk'@'::1' IDENTIFIED BY '123456'三、给创建用户赋权
GRANT all PRIVILEGES on wikidb.* to 'risk'@'localhost' WITH GRANT OPTION
GRANT all PRIVILEGES on wikidb.* to 'risk'@'127.0.0.1' WITH GRANT OPTION
GRANT all PRIVILEGES on wikidb.* to 'risk'@'::1' WITH GRANT OPTION