Wordpress Database Error establishing a database connection

Question

I updated my PHP from 5.4 to 7 and after that my wordpress website cannot connect to the database.

When I put the line define('WP_ALLOW_REPAIR', true); within the wp-config.php and go to address: http://www.address.com/wp-admin/maint/repair.php I still have the same error

Error establishing a database connection

When I connect to my wp-admin, I got the following:

Finally I checked my credential on my database within wp-config.php, they are correct but when I do a mysql> show databases; I got the following:

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

Answer 1

请使用以下代码编辑wp_config文件：

define('WP_ALLOW_REPATR',true); 

Answer 2

在这种情况下，您将遇到用户权限问题或数据库用户名，密码或密码错误。