Why the underscore in my database name will ruin the phpMyAdmin database list

Question

I recently created a database called test_test in phpMyAdmin, and right after I created it, the database list on the left side went bad suddenly. Is this a mistake or should I ignore _ in the database name?

Preview

local screen

When selecting test_test database

Answer 1

PHPMyAdmin groups your databases if an underscore is used. prefix_name . They still work as usual, they just display differently in PHPMyAdmin.

If you do not like it, you can disable it .

Answer 2

This is not a mistake, this is a function

See http://wiki.phpmyadmin.net/pma/Config#LeftFrameDBSeparator , you can change it to another template or disable it by setting LeftFrameDBTree to false