Warning: mysqli_connect(): (HY000/1045): Access denied for user 'username'@'localhost' (using passw

mysqli real connect HY0001045 Access denied

The root account is by default only accessible from localhost, so you may get “Access denied for user (using password: YES)” if you try and log in remotely. In such eventuality, you will need to somehow gain local access to the server. To log into a remote MySQL database, simply replace hostname_or_ip with your own

The error message "Warning: mysqli_connect(): (HY000/1045): Access denied for user 'username'@'localhost' (using password: YES)" indicates that there was a connection problem while trying to access the MySQL database using the provided username and password. This error occurs when the database credentials are incorrect or the user does not have sufficient privileges to connect to the database server. Here are some steps to troubleshoot and resolve this error:

Check Database Credentials: Verify that you are using the correct username and password to connect to the MySQL database. Double-check for typos or any extra spaces in the credentials.

Verify Database Host: Ensure that the hostname or IP address for the MySQL database server is correct. It should be set to "localhost" if the database server is on the same machine as your PHP code.

Check User Privileges: Make sure the user 'username' has the necessary privileges to connect to the database from 'localhost'. You can check and grant privileges using the following MySQL command:

sql

GRANT ALL PRIVILEGES ON database_name.* TO 'username'@'localhost' IDENTIFIED BY 'password';
FLUSH PRIVILEGES;

Replace 'database_name', 'username', and 'password' with the appropriate values.

Test Database Connection: Try connecting to the MySQL database using a simple PHP script to verify the credentials. Use the following code to test the connection:

php

?php
$servername = "localhost";
$username = "username";
$password = "password";

// Create connection
$conn = mysqli_connect($servername, $username, $password);

// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "Connected successfully";
?

If the connection is successful, you should see "Connected successfully" on the screen.

Check Firewall and Network Issues: Ensure that there are no firewall rules or network issues preventing the connection to the MySQL server.

Verify MySQL Service: Confirm that the MySQL service is running on the server. Check the status of the MySQL service using the following command:

lua

sudo service mysql status

If the service is not running, start it using:

sql

sudo service mysql start

Check MySQL Error Log: If the issue persists, check the MySQL error log for more detailed error messages that may provide additional information about the connection problem.

By following these steps, you can diagnose and fix the "Access denied for user 'username'@'localhost'" error and successfully establish a connection to the MySQL database from your PHP application