问题
When I download a new wordpress from wordpress.org and then paste it into my www folder of WAMP, then create a new database in phpmyadmin, then go to localhost and click the wordpress site, it asks to create the config file, and enter the database details, and i do that correctly, but when I click submit, it says "Can’t select database".
Any Idea why this is?
I already have a local wordpress site that started saying error connecting to database. The config settings are all correct so i tried to download a fresh wordpress site and use it and I cannot even set up a fresh one. I have never encountered a fresh wordpress site not working like this before.
I did a msqldump of my old site so that my boss could put it on his server. Not sure if that is relevant.
Cheers.
回答1:
For anyone who's still looking for solutions to this problem - please, check again your wp-config.php database credentials again. I had the same problem today and tried to over-complicate the matter by searching for advanced solutions, while I had a space in my DB_NAME field (was supposed to be 'wpdb' and was ' wpdb').
This space completely messed up my connection, I was even close to reinstalling the whole thing and losing all data.
回答2:
If using LAMP -
Make sure that all privileges are granted for that database to the created mysql user. Under your MYSQL shell use the below
GRANT ALL PRIVILEGES ON database_name.* TO database_user@localhost IDENTIFIED BY 'user_password';
Where,
database_name = your database name as per wp-config.php
database_user = your user name as per wp-config.php
userpassword = your user password as per wp-config.php
回答3:
By default
username : root
password : leave it blank
database host : localhost
table_prefix : wp_
回答4:
It sounds like either you have not created a database or your wp-config file is not set up correctly. Have you edited wp-config.php file of wordpress and provided correct database name and user credentials. See Famous 5 minute installation of wordpress for details.
回答5:
It took me way too long to discover that my msql databases were not working on any other websites either. I reinstalled Wamp Server and it worked.
回答6:
Verify the wp-config.php file. I had the same error and the problem was related with the quotes: ‘root’ vs 'root'
edit: the correct one is single quote
'
回答7:
For me, the solution was giving wp_user all permissions on the wp_db database.
I achieved this using the command line interpreter (CLI):
$ mysql -uroot -p
MariaDB [(none)]> GRANT ALL ON `wp_db`.* TO `wp_user`@`localhost` IDENTIFIED BY 'pass';
MariaDB [(none)]> exit;
After these operations, I restarted the database:
$ systemctl restart mysql
Of course, the database name (wp_db), username (wp_user), and password of the user (pass) can be different.
回答8:
my problem was that when I granted permissions to the DB user the host did not match what was in the wp_config.php
/** MySQL hostname */
define('DB_HOST', 'localhost:3306');
I was granting rights with
GRANT ALL ON databaseName.* TO 'UserName'@'127.0.0.1';
This gave me access when I was connected to the local host through ssh but It did not match wp_config.php. so I had to Grant like this then it all worked.
GRANT ALL ON databaseName.* TO 'UserName'@'localhost';
来源：https://stackoverflow.com/questions/24801992/cant-select-database-wordpress